Friday, December 16, 2022

Missouri Botanical Garden



Last week I jumped ahead, blogging about the Missouri Botanical Garden's Climatron before I properly introduced the host arboretum itself. Probably because we've been freezing lately in Oregon and the lure of a tropical environment seemed compelling. It was also cold in the morning in St. Louis on the day we visited, but after an hour inside their hot house I had my coat off and tied around my waist.



Upon entering the Visitor Center the staff had placed a collection box that reminded attendees: “A garden doesn't just happen, it takes contributions to make it possible”...or some-such message; but we had already paid full admission so I ignored the funding plea for the time-being. But, before we left, Haruko asked if she could look in the garden's shop. “Of course, dear” – and, exhausted, I was happy to wait on a comfortable bench in the foyer. Twenty minutes later my phone rang and it was Haru asking if she could buy some stuff. “Of course;” I reminded her that we co-habitate, co-work, co-parent, co-spend, co-everything, and each dollar she leaves supports their worthy cause. “Yes, yes – get the MBG sweater-coat too – you look good in it.” I appreciate her frugality, but often she over-worries.



I'm the tight-wad actually, because I have been helping myself (for free, via internet) to their excellent, informative website called Plant Finder, where flora descriptions and photos are concise and scholarly, and yes I frequently do plagiarize the contents, such as with some of last week's Climatron blog.* The MBG's stated mission is “To discover and share knowledge about plants and their environment in order to preserve and enrich life.

*The plant list, as they describe it, “is an internet encyclopedia project to compile a comprehensive list of botanical nomenclature, created by the Royal Botanic Gardens, Kew, and the Missouri Botanical Garden.”



The arboretum was founded in 1859, and is one of America's oldest botanical gardens in continuous operation and a National Historic Landmark. It's promoted as “A center for botanical research and science education of international repute, as well as an oasis in the city of St. Louis, with 79 acres of horticultural display.”



The land for the garden was provided by Henry Shaw (1800-1889), an English businessman who arrived at the small French trading port of St. Louis with his father – whose family in Sheffield manufactured and sold ironware. Due to Henry's business acumen he made tons of money supplying goods to the growing community and to those pioneering west, and at age 39 he retired from his hardware business to focus on real estate. Where the botanic garden is now located, Shaw described the land as “uncultivated without trees or fences,” so he decided to build a garden around his country estate. At times he returned to England and visited the grounds of Chatsworth, and after attending the Great London Exhibition he was inspired to give St. Louis a garden as great as those in Europe. And he did; one only wishes that he could return for a day to stroll through the place now, and imagine how he would marvel at the exotic world in the Climatron.


Ginkgo biloba


Ginkgo biloba


While the Climatron is a jungle of taxa jammed closely, my impression of the outside acreage was the size and generous spacing given to the individual trees. An enormous Ginkgo biloba immediately greets the visitor and it was glowing with rich autumnal color in the early November sun.


Taxodium distichum


Taxodium distichum


Near to the Ginkgo is a short row of “bald cypress,” Taxodium distichum, that looked like billowing orange clouds. On the lawn that bordered the cypress were woody “knees” that were lowly scalped by the mower, but in another location by a little stream the protruding ground stems were allowed to develop. Over 200 years ago French botanist Francois Andre Michaux saw the knees, but concluded, “No cause can be assigned for their existence.” Later, botanists gave these growths the name “pneumatophores” (air-roots) with the assumption that they allowed the root system – often in deep swamp water – access to air. More recently some scientists have examined this gas-exchange theory and conclude with Michaux that they do not aid in breathing, however they may provide structural support.


Glyptostrobus pencilis


Glyptostrobus pencilis


Glyptostrobus pencilis


For what it's worth, our old specimen of Glyptostrobus pencilis also produces knees, and it is known as the Chinese swamp cypress (shui song), closely related to the Taxodium. To copy from the MBG's Plant List: “This is the only species in the genus Glyptostrobus. It is currently listed on the IUCN Red List of Threatened Species as 'Critically Endangered.' Extinction in the wild may occur in the near future.” By the way I have enormous amounts of seed available to any Flora Wonder Blog reader who is interested in these deciduous conifers. Concerning the specific epithet for Glyptostrobus, it used to be lineatus but now we know it as pencilis, from Latin pensus, which means “hanging down” in reference to the pendant branchlets. I researched – believe me – to see if I could find a common etymological origin between the hanging down pensus and the Latin penis, but I came up...short. Penis means “tail.”


Maclura pomifera fruit


Haruko and I encountered a specimen of Maclura pomifera with softball-sized, orange-yellow fruit littering the ground. The damn things are ugly really, looking somewhat brain-like. One “orange” had fallen next to a drain grate, and I proceeded to photograph the interesting composition. Just then another fruit thudded to the ground and Haru shrieked for me to “Watch out – get away!” Since I have never been struck by lightning, nor have I ever won the lottery, I ignored her concern; but then another fruit pounded the ground near me, so I did hurry away.


Maclura pomifera


Maclura pomifera


Maclura pomifera was named after Scotsman William Maclure (1763-1840) and the specific epithet pomifera means “bearing apples.” The common name is “Osage orange” because the fruit has a faint citrus smell, while Osage refers to a member of an American Indian people originally from the Missouri area. The natives didn't call themselves “Osage,” it was instead the French's corrupted name from an Algonquian language. The tree itself is low-branching and armed with thorns, and I doubt that anyone would ever plant one without the accompanying fruit. Most Midwesterners deem the fruit to be inedible, but with some work the seeds can be extracted and they're said to taste somewhere between popcorn and raw sunflower seeds. We didn't sample any, but we saw one fruit ripped apart, apparently by a hungry squirrel. Maybe the furry rodent was above in the tree and was responsible for dropping oranges near me to protect his cache.


Fraxinus profunda


Benjamin Franklin Bush


A large tree was given plenty of space, and it attracted me for its straight, gray, ornamentally-furrowed trunk. The label identified it as an ash, Fraxinus profunda, which was originally named F. michaux, then F. tomentosa Michx. Its current specific epithet was given by botanist Benjamin Franklin Bush (1858-1937), and what a great name for an American botanist! Young Bush lived in Jackson County, Missouri when he received a copy of Class-Book of Botany by Alphonso Wood (another great botanist's name). He used the book to identify native species, but found it somewhat lacking, and that paucity inspired him to catalog the new species himself, and he published his own book in 1882. At one point he was employed by the Missouri Botanical Garden to collect plants from the far corners of the state, and he also spent time collecting with Arnold Arboretum director Charles Sprague Sargent. Sadly F. profunda is currently not recommended in landscapes because the species, along with other ash species, are being devastated with the introduction of the emerald ash borer (Agrilus planipennis).


Malus sargentii


Malus sargentii


Malus sargentii


Malus sargentii


A group of glisteningly-fruited apple trees caught our attention. Malus sargentii honors the aforementioned Charles Sprague Sargent, and it was a fellow Arnold Arboretum botanist, Alfred Rehder, who bestowed the name. The Hillier Manual of Trees and Shrubs describes it as “A delightful shrubby species...In spring it is smothered with golden-anthered, pure-white flowers, and in autumn with small, bright red, cherry-like fruits. About 6 or 7 trees grew near the path with a squatty habit so I assumed they were top-pruned. For certain the lower branches had been removed, and all the better to reveal the wonderful trunks, and each tree assumed its own unique physique. If I was a neighbor to the MBG I'm sure I would visit this group often, and probably assign a name for each individual.


Tilia x euchlora


Tilia x euchlora


I've only grown one “lime” cultivar, Tilia cordata 'Akira Gold', and I saw the original selection – now large – at Shibamichi Hoten in Japan. We didn't encounter the T. cordata species at MBG, but I'm sure they had one or more on the grounds. But we did find T. japonica and T. x euchlora and it was the first time for me to examine the latter. The hybrid’s origin is uncertain, but is thought to be T. cordata x T. dasystyla, and has been known since about 1860. Hillier describes it as an “elegant tree when young with glossy leaves and arching branches.” Both parents are of European origin, with T. dasystyla native to the Crimea and Ukraine, and is rare in cultivation. The MBG Plant Finder claims that T. x euchlora, when in full bloom, attracts such “abundant” numbers of visiting bees that “humming can be heard many feet from the tree.” Hillier remarks that it is a “clean” lime, being free from aphids, “but its flowers tend to have a narcotic effect on bees.”*

*Like other lindens, T. x euchlora is a source for premium honey.


Tilia japonica


Tilia japonica


MBG's Linnean House


The genus name Tilia comes from the Latin name for the lime trees (AKA linden), known in southern Sweden as Linn, and in fact it's the origin of the name Linnaeus. Tilia japonica is native to eastern China and also to the four main Japanese islands of Hokkaido, Honshu, Shikoku and Kyushu, usually found in mountain forests up to 2000m (6561 ft.). It is the official tree of the Japanese city, Nagano.


Carya laciniosa


Carya laciniosa


I find it humorous that the Carya genus (in the Juglandaceae family), that this classification of edible nuts was first described by the English botanist Thomas Nuttall, and that his author abbreviation in botany is Nutt; i.e. “nuts by Nutt.” Carya is of course a North American hardwood tree and its name originates from Greek karya for “nut tree,” from karyon for “nut.” In Greek mythology the Laconian* princess Carya had a love affair with the god Dionysus, and after her death he memorialized her by changing her into a fruitful walnut tree. A temple, dedicated to Artemis Karyatis, was supported by statues carved in walnut wood, and modelled with feminine features which were called “Caryatids.” The ancient town of Caryae was one of six villages that united to form Sparta, and was the hometown of Helen of Troy. Girls from Caryae were considered especially beautiful and strong, perfect for giving birth to strong children. Too bad that Buchholz Nursery couldn't have recruited employees from that area; except that in another version, these women may have been more trouble than their worth, as the place is named for the “nut-tree sisterhood.”

*The princess was a denizen of “Laconia,” the ancient Greek land which Sparta was the capital. The inhabitants were known to be “laconic,” for using as few words as possible – pithy, terse and concise.


Carya laciniosa


In any case, Carya laciniosa is the “Shellbark hickory,” also known as “kingnut,” and it produces the largest of all hickory nuts, and those are sweet and edible. A champion “shellbark” is known in Missouri at 36.9m tall (121') with a spread of 22.6m (74'). It's difficult for this west-coast tree guy to keep straight some of the East-coast hardwoods, especially when the Carya genus contains C. laciniosa (“Shellbark”) and also C. ovata (“Shagbark”) since both display the same shaggy, peeling trunks. Unfortunately, the C. laciniosa was once a common sight, especially in moist bottomlands and floodplains of the United States, but only a few are left in nature today.


Gaillardia aristata


Gaillardia aristata


Decumbent fireworks was provided by Gaillardia aristata, a North American species in the sunflower family, Asteraceae,* and known by the common name “blanket flower.” The genus name was provided by our previous acquaintance, Thomas Nuttall, but he called it Gaillardia bicolor var. aristata. The genus was named for Antoine Rene Gaillard de Charentonneau, who was but an amateur botanist, but strangely the American native is the official flower of Wallonia (the southern portion of Belgium). The flower has good vibes, though, and is associated with joy, optimism, charm and abundance. It has also been mentioned with aristocracy, but that word has nothing to do with the species name of “aristata” (bristly or awned, referring to lacy leaf edges). Aristocracy doesn't seem to match with joy, optimism or charm, but perhaps it does with abundance. There are many legends concerning Gaillardia, for example the Aztecs believed that all flowers were originally yellow before the Europeans arrived, but due to bloodshed inflicted by the conquerors the petals cupped together to catch drops of Aztec blood before it touched the ground, kind of a sad story for joy, optimism and charm.

*Estimates vary greatly, but the Asteraceae family contains nearly 1550 genera and 24,000 species, the largest family of flowering plants.


Tricyrtis hirta


Tricyrtis hirta


We were impressed with a 3' bush of Tricyrtis hirta which was loaded with a couple hundred blossoms. The “Japanese Toad lily” was growing in a shady area and is apparently hardy enough to withstand St. Louis winters. The specific epithet hirta means “hairy,” although the casual observer would never notice that characteristic. The genus name is derived from Greek tri meaning “three” and kyrtos meaning “humped” because the bases of the three outer petals are swollen, but again, that feature can easily be overlooked. The plant was originally described by Carl Peter Thunberg as Uvularia hirta, then changed to Tricyrtis by Sir Joseph Dalton Hooker. The common name of “toad lily” is hard to fathom, unless it's simply the way the blossoms sit frog-like on the arching stems, or maybe the kaeru (Japanese name for “frog”) are happy to hang out in moist shade.









While we had some energy left, Haruko and I undertook an exploration of the MBG's Seiwa-en, a Japanese strolling garden named for “garden of pure, clean harmony and peace.” Fortunately all the plants looked healthy because Haru says Seiwa-en can be the name of a funeral home or cemetery. It was a unique garden for me, nothing like I've seen before in Japan or America, and I guess the main attribute would be its large size at 14 acres. Trees were pruned per Japanese garden tradition, but certainly not over-pruned, and many of the trees were given abundant space. In other words it wasn't overly busy, and in that sense you could say it was “peaceful.”


Pinus densiflora


Pinus thunbergii


Pinus sylvestris


According to the MBG website: “The Japanese garden is a monochromatic understatement, in which the viewer is permitted the thrill of personal interpretation and discovery.” Maybe I'm not so easily “thrilled,” but Haruko and I did hold hands as we strolled along the wide path. One pine in the distance puzzled me though, and that's because it wasn't monochromatic: the needles were blue when all other conifers were green. Hmm...it looked like a Pinus sylvestris, and indeed the label confirmed it, so what was that doing in a Japanese garden? Pinus densiflora and Pinus thunbergii – both native to Japan – were growing well as they do in all “authentic” Japanese gardens. The offending Scot's pine was nicely pruned and similarly shaped as its green brethren, but while I'm usually a fan of the blue, the pine just didn't belong in a Seiwa-en.


Acer palmatum


An old-timer Japanese maple was impressive for its stout trunk, and for the fact that many surface roots were visible. It looked to be just a green seedling, not any particular cultivar, but I could see from a distance that it was marked by two labels. I had to wait – it seemed like forever – for a couple of old ladies to get out of the way before I could examine my tree in peace. Admittedly I was growing tired and irritable and the tree's labels didn't reveal any useful information – they both read “Please Do Not Climb.


Acer palmatum


We needed to eat, that was my problem anyway, but a final image took me back to pure, clear harmony and peace. It was a trunk silhouette of Acer palmatum var. dissectum, and all the better that most leaves had fallen. The maple and I are both old and crooked, but we stared at each other for a few minutes, communicating in silence, and thanks for the memory.

Friday, December 9, 2022

The Exotic Climatron


Plinia cauliflora (Jaboticaba)


Plinia cauliflora (Jaboticaba)


Plinia cauliflora (Jaboticaba)


Dryelle Pallaoro and Talon


One of the most interesting tropicals is Plinia cauliflora, an evergreen tree commonly known as the “Brazilian Grape tree,” or jaboticaba. I first became aware of it because we hosted a Brazilian intern, Dryelle Pallaoro, about 8 years ago and she claimed the fruit was the best in the world. I wasn't certain about that opinion, but I loved the sound of the name “jaboticaba,” especially coming out of her smiling lips. Dryelle was a happy, intelligent employee with a scientific agriculture background, but maybe her enthusiasm for the tree was because an old specimen grew in her front yard in Cuiaba and she was homesick for Brazil (and her Brazilian boyfriend). In any case I ordered a couple of trees online – I guess in Dryelle's honor – and they performed well for a couple of years in GH20, my warmest greenhouse. Sadly the heater failed one night and the two USDA zone 10 plants perished when the temperature plummeted into the teens, so adeus to that project before I could sample any fruit.

Haruko and Benjamin


Missouri Botanic Garden Climatron


I completely forgot about the grape trees with the cute name until a couple of weeks ago, when Haruko and I stumbled into a specimen housed at the Missouri Botanic Garden's Climatron in St. Louis. Grapes develop along the trunk and branches, and also the small sparkling white flowers add additional interest to the ornamentally colorful trunk. An employee who was watering in the tropical house noticed my interest in the tree, and he also made a point to speak a few phrases of Japanese with my wife. His name was Benjamin and I would have guessed he was Brazilian, but in fact he was from Guam, and I think he is the only Guamanian that either Haruko or I have ever met. Since we three were the only ones in the Climatron, Benjamin picked a dark purple grape for us to sample, and my goodness, it was sweet and gooey, absolutely delicious. I wondered if any of the elite, high-priced grocery stores in the Portland area stock jaboticaba, or if there's such a thing as a jelly or preserve that might be available. I see no reason why you couldn't make a tasty wine as well.


For quite some time I've had an urge to visit the Missouri Botanic Garden, but of course I was always bogged down with family and business. Since I was obligated to attend the Maple Society in North Carolina at the end of October, I suddenly invented the need to schedule a stop-over in St. Louis. I knew that the botanic garden was home to a conservatory, but I didn't know it was a Climatron set in a geodesic dome. The structure was completed in 1960, the world's first totally air-conditioned greenhouse and was enclosed in aluminum and plexiglass, which must have seemed so modern back then. The half-sphere measures 42m (137.8 ft) in width and 21m (68.9 ft) tall, and in 1976 it was named one of the 100 most significant architectural accomplishments in United States history. Today it contains over 400 different taxa in distinct climate ranges from the Amazon to Hawaii, Java and India. Flood lights revolve at night in five-minute cycles which simulate noon light on one side of the dome and moonlight on the other side. Of course I fantasize about winning the lottery, building my own Climatron and hiring Benjamin to run it.

Ficus benghalensis



The main problem that faces the staff is how to jam in 400+ species in a limited space, so that they don't crowd each other out...as they do in nature. One behemoth to deal with is a banyan (also spelled banian), a Ficus (fig) benghalensis in the Moraceae family from India, and I have seen huge specimens in Nepal and India.* They're impressive as the trees develop accessory trunks from aventitious prop roots, allowing the tree to spread indefinitely. Furthermore the banyan begins life as an epiphyte, growing on another plant and getting its moisture and nutrients from the air and rain. As it grows the prop roots help support a canopy which can be immense, all of which can hog an acre or two. Maybe when Benjamin finishes his watering chores, he tackles the fig to keep it in bounds.

*Locally it is known as the “wish fulfilling tree” and is considered sacred to Hindus in India.

Nepenthes species


Nepenthes species


Pitcher plants of a Nepenthes species were dangling from a mossy log. As with the Sarracenia genus I mentioned a week ago, the Nepenthes trap insects that are lured with secreting nectar; once the prey falls into the liquid it is digested by enzymes, providing the required nutrition. The genus is in the monotypic family Nepenthaceae, primarily from southeast Asia including Borneo, Sumatra, Malaysia, India etc., and they are commonly called “monkey cups.” One species, N. attenboroughii is named for the famous British naturalist, Richard Attenborough, and is known to be the largest carnivorous plant, reaching nearly 5' tall with pitchers up to a foot in diameter. The genus name was first published in 1753 by Carl Linnaeus in Species Plantarum, and refers to a passage in Homer's Odyssey when a potion is given to Helen by an Egyptian queen. Nepenthe means “without grief” and in Greek mythology, it's a drug that eliminates all sorrows with forgetfulness. In the old days of British horticulture Nepenthes became popular as “stove plants,” and the famous Veitch Nursery firm actually sent out plant hunters to the tropics to bring back new species.

Hibiscus schizopetalus


Haruko photographed a pretty pink-red blossom commonly called a “Fringed rosemallow” or “Japanese lantern”* from Africa, and I was surprised that the label identified it as Hibiscus schizopetalus. It normally grows as an evergreen woody shrub, but it is hardy to only USDA zone 10. The specific epithet schizopetalus does not imply a mental disorder, rather it just means “split” and petalus means the “divided petals” of each flower. It is considered easy to grow as a house plant and can bloom throughout the year. In England it received the prestigious Award of Garden Merit by the Royal Horticultural Society.

*No, not native to Japan at all.

Heliconia collinsiana


Another blossom that caught Haruko's eye was Heliconia collinsiana, a strange-looking exotic from southern Mexico and Nicaragua. The genus name comes from the Latin Heliconius, from the Helicon mountain sacred to Apollo and the Muses in Greek mythology, while the species epithet honors the American botanist Guy N Collins (1872-1938). Flowers appear on drooping terminal spikes and fruits are globose drupes that are initially yellow, then turn to glossy dark blue when ripe. The flowers look like miniature “birds of paradise” and they are also commonly called “lobster claws” or toucan beak” and they are pollinated mainly by hummingbirds.

x Citrofortunella microcarpa


An orange from the Philippines, x Citrofortunella microcarpa, was in fruit, and the common name of “Orange calamondin” refers to it being a natural hybrid between mandarins and kumquats. It is hardy to USDA zone 9 or 20F and it's a wonderful patio tree as long as you have winter protection. The white flowers are fragrant and they are set off with shiny, dark evergreen foliage. I actually grew a calamondin as a house plant as I thought it would be cool to pick my own oranges. However the flower buds would fall off before developing fruit, probably because the air was too dry, and then the damn thing grew infested with scale and I threw it out. Hopefully Benjamin has the scale problem figured out and he can enjoy oranges with his jaboticaba grapes.

Anthurium wendlingeri


Anthurium wendlingeri must fascinate all who see it due to a pendent, white corkscrew inflorescence. The Climatron had a plant flower by 1986 when the rare species was just first described in 1965 based on a living plant in Costa Rica. The genus is in the arum family and etymologically speaking it is derived from Greek anthos for “flower” and oura for “tail,” for obvious reasons. Anthuriums are popular house plants and my daughter even grows one, but the wendlingeri species still commands a huge price, well above her teenage means.

Pavonia multiflora


Dedication to Jose Pavon Jimenez in Spain


Maybe more affordable would be a plant of “Brazilian candles,” Pavonia multiflora, and the erect pinkish-red blossoms are sure to impress...because, well, they look surrealistically vibrant sitting atop their green jungle leaves. Multiflora easily describes the many flowers which appear year-round while the generic name honors the Spanish botanist Jose Pavon Jimenez (1754-1844). The genus growing in the Climatron is native to Brazil, but it also occurs in Africa.

Pistia stratiotes


Pistia stratiotes


A pool of water in the Climatron contained an aquatic weed in the “arum family” (Araceae), Pistia stratiotes, and it is often called “Water cabbage” or “Nile cabbage,” and was first discovered from the Nile near Lake Victoria. Now it is found in many tropical fresh waterways around the world and is considered an invasive species and a notorious mosquito breeding habitat. The little biters lay their eggs under the Pistia's leaves; 24 hours later the emerging larvae attach to the cabbage roots and one week later they develop into adults capable of spreading malaria. The genus name is from the Greek word pistos meaning “water” and the species name is also from a Greek word meaning “soldier” since some plants in the genus display sword-shaped leaves. Even though it was first discovered from the Nile, its origin remains uncertain, but perhaps even from South America. Nevertheless, the plant is described from Egyptian hieroglyphics and was known to the Greek botanists Dioscorides and Theophrastus. It is common now in southeast USA, particularly Florida and was recorded by the American botanist William Bartram in 1765. The weed is considered edible but not palatable – to humans that is – but both ducks and pigs find it tasty.

Malpighia coccigera with solo pink blossom


Marcello Malpighi


A tiny-leaved holly is the slow-growing, spreading evergreen Malpighia coccigera. It is commonly called "Singapore holly" and is native to the West Indies, but I'll never grow it because it reportedly dislikes temperatures below 55F. Pink or white, trumpet-shaped flowers (to about 1/2 inch) are produced in summer, followed by red berries, but it is not at all related to the holly genus, Ilex. The genus name honors Marcello Malpighi (1628-1694), a famous anatomy professor at Bologna.

Dioon edule


T-Rex in the Climatron


Dioon edule is a cycad native to Mexico, known as the “chestnut dioon” and also as “palma de la virgen.” The genus name “Dioon” means “two-egged,” referring to its two ovules, and D. edule was originally described by John Lindley in 1843. The cycads are among the oldest seed plants and they pre-date the dinosaurs. Imagine the fun the public would have if a miniature dinosaur was allowed to roam through the Climatron.

Costus pictus


Costus pictus impressed me greatly for an erect, conifer-cone-like protrudance rising above tropical green leaves. The “Painted Spiral ginger” is native to Mexico and the “painted” description describes a yellow with red-striped flower which wasn’t still present upon our arrival in early November. The perennial herb is also popularly grown in India and floraofindia.net indicates its medicinal uses for “tonic, stimulant and antiseptic properties” – you know, those qualities discovered by the indigenous hundreds of years ago – but my interest piqued with the claim that Costus pictus is effective from keeping one’s hair from turning gray, and also as an effective aphrodisiac. But my wife says I don’t need to worry about those two situations.

Costus megalobractea


Nicholas Culpeper


The genus name Costus was published by Linnaeus in 1753 in his Species Plantarum, while the English herbalist Nicholas Culpeper (1616-1654) knew it as “cost” or “coste” and wrote: “Being boiled in oil, it is held to help the gout by anointing the grieved place with it,” but I’m not sure what genus or species Culpeper was writing about. Today the Latinized Costus name is employed, thanks to Linnaeus. Another species, C. megalobractea, was growing near the C. pictus and it featured glossy green cones as well. White orchid-like flowers will pop out from the green bracts but we were too late to see this South African species flower. Be careful with C. megalobracteata concerning supposed medical cures, for it is commonly called the “Kiss of Death.”

Crinum asiaticum


Crinum asiaticum was showing off with a blossom, but caution there too as it is known as “poison bulb.” It is a perennial with spider-lily-like flowers, however all parts of the plant are toxic. It is native to eastern Asia, Australia and Pacific islands, but it has also naturalized in the Americas including Florida, Louisiana, and California. The Tao people native to Taiwan’s Orchid Island use portions of the stem (vaKong) to bait fish going into their nets, and presumably no one vomits or attains a fever by consuming the piscatorials. Probably of more concern to the indigenous islanders is that their lives are affected by a nuclear waste-storage facility, built in 1982 without first consulting the residents. The locals protested of course but Taipower’s three nuclear plants still use the facility, and furthermore the Taiwanese air force continues to pound Lesser Orchid Island for target practice. Maybe the Tao people should fire back at the air force with bulbs of Crinum asiaticum which can weigh up to 25 pounds each.

Alpina vittata


Prosperus Alpinus


Alpina vittata is the “Variegated ginger” with its streaks of white splashed onto narrow, pointed leaves, a rainforest terrestrial native to Papua New Guinea and the Solomon Islands. I’ve never seen it in flower –  supposedly tubular, white-to-pink colored – but with the lively foliage one might not notice the flowers anyway. The Alpina genus was named for Prospero Alpini (1553-1617), an Italian botanist who specialized in exotic plants, and is the largest genus in the ginger family (Zingiberaceae). “Prospero” – a name I covet – travelled in Egypt and described the plants he encountered, and there he learned of sexual difference in plants, an important influence to the foundation of the Linnaean taxonomy system. He discovered, for example, that the female date palms do not bear fruit unless the branches of the male and female plants are mixed together. In 1593 he was appointed Professor of Botany at Padua in Italy, a garden my daughter visited last summer at my bequest, and later in 1603 he was appointed head of the institution and his name was Latinized as Prosperus Alpinus. I doubt that the learned Italian ever saw Alpina vittata, nevertheless Linnaeus bestowed a genus name for him.

Fittonia albivenis


Conversations on Botany by Elizabeth and Sarah Fitton


The tropical “Silver fittonia,” Fittonia albivenis, is an evergreen perennial from the rainforests of Peru and Columbia, but you’re probably familiar with the USDA zone 11 (to 40 F) species as a houseplant. It can be touchy as thus, especially prone to overwatering, but also if permitted to dry out. The genus name honors sisters Elizabeth and Sarah Fitton, authors of Conversations on Botany (1817), while the specific epithet albivenis obviously refers to the plant’s white veins.

Plant hanging from the Rhizophra mangle


Plant hanging from the Rhizophra mangle


Rhizophora mangle


Concerning plant identification, if one is fairly ignorant about tropical plants such as I, you’re not always sure if the nearest label belongs to the specimen you are inspecting. For example, the lichen-looking plant (above) had a label that identified it as Rhizophora mangle, and for looking like an unkept beard, I chuckled at the amusing specific epithet. However I later learned that the interesting beard was not the “mangle” at all, rather the name referred to the “Red mangrove” tree that it was drooping from.

Vine climbing on Ceiba pentandra


Another plant that remained unidentified was a vine which snaked neatly up a brown trunk. Haruko and I were both fascinated, like we were experiencing one of Andy Goldsworthy’s creations – and look up his work on the internet. Alas, the label actually belonged to the tree it was climbing into, a Ceiba pentandra, a large tree with seed pods (Kapok) with cotton-like fluffs. The host tree’s bark is used to treat headaches, but it too is an aphrodisiac, so apparently it can cure more aches than just those of the head. Benjamin was gone on break I guess, so the vine remained unknown to us, even though we thought it was the coolest plant in the hot house.


What an incredible achievement, though, to grow 400 different plants in the Climatron when they each have individual cultural preferences – kind of like keeping 400 individual humans happy with their different cultural backgrounds. But everything looked healthy and bug free – maybe there’s a bull-pen greenhouse where the sickly can go to convalesce. The operating budget must be immense, especially compared to caring for the trees and shrubs growing outside, so the casual visitor or the botanist must applaud the commitment of the Missouri Botanic Garden and the supportive citizens of St. Louis.


Haruko and I were in the structure early in the peaceful morning, but soon enough the paths were filled with loud, rambunctious kids. The garden exists to instruct and inspire visitors, which it certainly does, and I agree that children should be allowed to enter…as long as they are muzzled and leashed. I don’t know, Benjamin seemed like a tolerant caretaker, but if I held the watering hose, I might, uh, accidentally drench a screaming brat.

Deidre and Maura (by Don Weigand)


Next week the Flora Wonder Blog will examine the vast array of trees and shrubs growing outside the Climatron. Hurry up kids – keep up with us.