Ceratolobus discolor

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Ceratolobus
(sehr-ah-toh-LOH-buhs)
discolor (dihs-cohl'-ohr)
CdDSCF0072 1726 wai-seperaa(1).jpg
Eastern Penan, Sarawak.
Scientific Classification
Genus: Ceratolobus
(sehr-ah-toh-LOH-buhs)
Species:
discolor (dihs-cohl'-ohr)
Synonyms
None set.
Native Continent
Asia
Asia.gif
Morphology
Habit: Clustering
Leaf type: Pinnate
Culture
Survivability index
Common names
None.

Habitat and Distribution

Borneo, and Sumatra. Widespread but rather local, possibly overlooked, in Sarawak,
Eastern Penan, Sarawak.
West and South Kalimantan, and Sabah, and one population in West Sumatra. Confined to lowland Mixed-Dipterocarp forest, sometimes on seasonally flooded alluvial flats.

Description

Moderate-sized clustering rattan rarely exceeding 15 m in length. Stems closely clustering by short suckers, 6-11 mm in diam. without sheaths, to 30 mm with sheaths; internodes 20-35 cm long, occasionally still longer in juvenile plants. Leaf sheath pinky-grey-green when fresh and newly emerged, dull grey-green when fresh and old, dark grey-brown when dry, densely covered with caducous scurfy grey indumentum (dark brown scales rather rare), and armed with groups and partial whorls of easily detached dark brown, spiculate spines to 9 cm long, borne on pale yellowish-green bulbous bases, these last remaining long after the spiculae have become detached; occa- sionally with broad, thin, almost papery, straw-coloured spines to 3.7 x 0.3 m long in groups among the spiculae, very rarely these spines abundant and spiculae almost absent; geniculus prominent, either armed with spiculae or, in forms with broad papery spines, almost inerm; ocrea to 1.5 cm, brown, tattering. Leaf 1.5-2.5 m long in adult; petiole 10-35 cm long, occasionally longer in juvenile leaves, to 10 mm wide and 7 mm thick, rounded abaxially, flattened or slightly grooved adaxially, armed with scattered spiculae below, and groups of 2-4 more robust, not easily-detached yellow-green spines to 1.1 cm long, especially along the margins, and scattered smaller spines on the adaxial face; minute papillae and caducous grey-white indumentum between the spines; petiole decreasing in width and armature above; rachis armed as the petiole but in upper part, spines tending to be confined to abaxial face and grouped in grapnels of 3.5; cirrus to 1.5 m long, with grapnel spine groups 5 cm distant below, decreasing above, and scattered grey-white indumentum and few chocolate-coloured scales.

Culture

Cold Hardiness Zone: 11

Comments and Curiosities



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).

J. Dransfield, A monograph of Ceratolobus (Palmae). 1979


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

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