Daemonorops grandis

From Palmpedia - Palm Grower's Guide
Jump to: navigation, search
Daemonorops
(deh-mohn-OHR-ohps)
grandis (GRAHN-diss)
8062299263 4b492f24eb o.jpg
Photo by Yeoh Yi Shuen.
Scientific Classification
Genus: Daemonorops
(deh-mohn-OHR-ohps)
Species:
grandis (GRAHN-diss)
Synonyms
None set.
Native Continent
Asia
Asia.gif
Morphology
Habit: Clustering
Leaf type: Pinnate
Culture
Survivability index
Common names
Chinese: Da Huang Teng, Maylay: Rotan Sendang.

Habitat and Distribution

Daemonorops grandis is found in Malaya,
Photo by Yeoh Yi Shuen.
and Thailand.

Perak, Pahang, Selangor, Negri Sembilan, Malacca, Singapore: Endemic. "Rotan sendang" is a plant of dryland - generally of steep slopes in the foothills to about 900 m altitude. At higher altitudes populations often consist of a plethora of forms, of different sizes, varying from very slender (about 1.5 cm in diameter) to very robust; yet the range of intermediates allows the extremes to be identified as D. grandis. (J. Dransfield. 1979)/Palmweb.

Description

Clustering robust rattan climbing to 20 m tall. Stem without sheaths to about 3 cm in diameter, with sheaths to about 5 cm, occasionally very much thinner; internodes to about 25 cm long. Sheaths pale green to pale brownish armed with scattered or partially whorled blackish spines to 5 cm long, usually less, and scattered dark brown indumentum. Knee conspicuous; ocrea poorly developed. Whole leaf to 3.5 m long, occasionally even more; petiole to 40 cm armed with short grouped spines along the edges; rachis and petiole tinged crimson when young; cirrus to 1.75 m. Leaflets about 30 cm each side of the rachis, rather distant, broad dull bluish green, not shining, when young, very dark green when old, the longest to 50 cm long by 4.5 cm wide, very sparsely bristly or unarmed. Inflorescences male and female very similar, sessile ± erect, to 40 cm long by 15 cm wide, terminating in a beak to 15 cm long, all inner bracts enclosed in the outermost; outermost bract rather densely armed with black spines scattered and grouped, and dense chocolate-coloured indumentum. Ripe fruit rounded to 2.5 cm in diameter, shortly beaked, covered in 14-16 vertical rows of pale yellowish brown scales with dark margins (greenish when immature). Seed rounded or somewhat angular, to about 2 cm in diameter, deeply ruminate. Seedling leaf with about 6 broad pinnae, dull, bluish green in colour. (J. Dransfield. 1979)/Palmweb. Editing by edric.

This rattan is easily distinguished in the field by its broad leaflets with bluish green colour, and the crimson tinge to the young petiole and rachis. In the herbarium, identification is more difficult, but leaflet size is ± diagnostic.

I have included in D. grandis, D. laciniata and D. intermedia: though both these taxa have narrower leaflets than typical D. grandis their leaflets are still broad and of the same texture as those of the typical plant. (J. Dransfield. 1979)/Palmweb.

Culture

Comments and Curiosities

Etymology: Grandis - large.

Uses: Poor quality cane sometimes collected for coarse work. (J. Dransfield. 1979)/Palmweb.

Native to rainforests on the Malay Peninsula between 300 and 800 m (1000 and 2600 ft.), this vigorous species forms large thickets of spiny stems to 5 cm (2 in.) in diameter. Climbing up into surrounding trees, they can reach a height of up to 20 m (65 ft.) and hold long crowns of large, flat, ascending, pinnate leaves. (RPS.com)


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).

Dransfield, J. 1997. The Rattans of Brunei Darussalam. Ministry of Industry and primary Resources, Brunei Darussalam.


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

Banner1B
Back to Palm Encyclopedia