Iguanura divergens

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Iguanura (ig-oo-ah-NOOR-ah)
divergens (dih-VEHR-jenz)
94b1a4.jpg
Floribunda Palms, Hawaii. Photo by Geoff Stein.
Scientific Classification
Genus: Iguanura (ig-oo-ah-NOOR-ah)
Species:
divergens (dih-VEHR-jenz)
Synonyms
None set.
Native Continent
Asia
Asia.gif
Morphology
Habit: Clustering
Leaf type: Pinnate
Culture
Survivability index
Common names
None.

Habitat and Distribution

Thailand.
Id0016748675.JPG

Description

A small Iguanura, it has a small reddish trunk, about 50 cm high.

Culture

Cold Hardiness Zone: 10b

Comments and Curiosities

This is a handsome new taxon with clustering stems, which may provide clues about transformations between the unllichiana and polymorpha types in the genus, if speculations may be countenanced; the branched rachillae are indeed reminiscent of I. ruallichiana, whereas the trapezoidal leaflets of the pinnae are clearly similar to larger forms of L p,r,,lymr.,rpha. Hodel describes the leaves as marcescent, and the inflorescences as inter{bliar. and states that the stems are apparently quite robust, up to 3.5 cm in diameter, reaching to 3 m in height. Regrettably no fruit had been collected; this is unfbrtunate, as lloral features tend to be indistinguishable in lguanura. I viewed the holotype at BK, and would have liked to see more specimens. Initially I thought that there might well be a connection with the new species that I have described, I. perclana, from Perak, which is, however, usually solitary, but sometimes occurs with basal growths. After viewing two fine live specimens cultivated at Nong Nooch, I must note certain discrepancies from Hodel's descriptions: the leaf sheaths abssise, revealing prominently infra{oliar inflorescences, some growing a mere 10-25 cm above the base of the stems (see Fig. 1) (Image Gallery); there were of course others interfoliar, awaitins leaf abscission. Their stems were ca. 2 cm rn diameter, and were not as robust as mentioned by Hodel for his holotype. Inescapably, I was reminded of the giant forms of I. polymorpha from Upper Belum in Perak, which also had long nine-branched inflorescences. I believe that a further collection and examination of the infructescence and drupes are needed to confirm this new taxon.


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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