Lanonia acaulis

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Lanonia (lah-non-EE-ah)
acaulis (ah-KOW-liss)
RDG2011-05-14 10-06-50.jpg
Mike Harris Residence (Palmboo Gardens). Near Searle Brothers Nursery Florida. Photo by Ryan D. Gallivan.
Scientific Classification
Genus: Lanonia (lah-non-EE-ah)
Species:
acaulis (ah-KOW-liss)
Synonyms
Licuala sp. 'Yal Braal' Licuala acaulis
Native Continent
Asia
Asia.gif
Morphology
Habit: Clustering
Leaf type: Costapalmate
Culture
Survivability index
Common names
None.

Habitat and Distribution

Vietnam. Endemic to central Vietnam (Ba Na-Nui Chua Nature Reserve near Da
Key West, FL. Photo by Danny Vagnoni.
Nang City' in primary, evergreen, broad-leaved, wet forest on steep slopes at 500 m elevation.

Description

Stems solitary, to 0.4 m tall, diameter not known, short and mostly subterranean. Leaf number not known; leaf sheaths not known; petiole length not known, the entire length with widely spaced, recurved, brown spines to 0.5 cm long, sometimes spines absent distally; blades to 108 cm wide, split into 22-32 segments, without minute, reddish-brown scales abaxially, with straight sides; costas 3.5-7.5 cm long; middle segment split almost to the base of the blade (to costa apex) into 2 lobes, these only slightly wider than the other segments, 50-59 cm long, 4-5 cm wide at the apices; segments scarcely indented at the apices; indentations leading to adaxial folds 0.3-0.7 cm deep, those leading to abaxial folds 0.1-0.2 cm deep, indentations deeper on lateral segments. Inflorescences to 50 cm long, becoming recurved below the leaves at or after anthesis; prophylls to 25 cm long; peduncles to 30 cm long; rachis 6-25 cm long with 1-2 partial inflorescences, these branched to 2 orders, subtended by broad, flattened, densely brown tomentose, plicate rachis bracts, these splitting laterally; staminate rachillae 10-21 on each partial inflorescence, 20-30 cm long, 1.5-2.5 mm in diameter, densely covered with brown, felty hairs; floral stalks scarcely developed, borne in groups of 2-3, each subtended by small bracteoles; staminate flower buds 5-6 mm long, bullet-shaped; calyces about 2.5 mm long, tubular, gibbous, 3-lobed at the apices, glabrous or with a few, scattered, brown hairs; corollas about 4.5 mm long, split for two thirds their length into 3 petals, glabrous; staminal rings scarcely developed; filaments free for about 1.6 mm, alternately long and short; anthers about 0.5 mm long; pistillate rachillae 9–16 on each partial inflorescence, 8-13 cm long, 2.5-3 mm in diameter, hairy as the staminate rachillae; floral stalks scarcely developed, solitary, each subtended by small bracteoles; pistillate flower buds 8-10 mm long, ellipsoid; calyces 4-4.5 mm long, cupular, briefly 6-lobed distally at anthesis (by early splitting of 3-lobed calyx), glabrous or scarcely hairy; corollas 6-8 mm long, split for about two thirds their length into 3 petals, glabrous; staminal rings scarcely developed, with vestigial filaments; pistils 3-3.5 mm long including a 1 mm long style, glabrous. Fruits not known at maturity, immature fruits globose, epicarp warty. Editing by edric

Culture

Growing Climate: Filtered light -Temp from 0.C to 35.C. Cold Hardiness Zone: 10a

Comments and Curiosities

A newly described species in 2008 from central Vietnam. Type Location: Vietnam (16.099695°N, 108.037834°E)



External Links

References

Phonetic spelling of Latin names by edric.

Special thanks to Geoff Stein, (Palmbob) for his hundreds of photos.

Special thanks to Palmweb.org, Dr. John Dransfield, Dr. Bill Baker & team, for their volumes of information and photos.

Glossary of Palm Terms; Based on the glossary in Dransfield, J., N.W. Uhl, C.B. Asmussen-Lange, W.J. Baker, M.M. Harley & C.E. Lewis. 2008. Genera Palmarum - Evolution and Classification of the Palms. Royal Botanic Gardens, Kew. All images copyright of the artists and photographers (see images for credits).


Many Special Thanks to Ed Vaile for his long hours of tireless editing and numerous contributions.

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