Daemonorops collarifera

Daemonorops (deh-mohn-OHR-ohps) collarifera (kohl-ahr-ih-FEHR-ah)
Muara Dua, South Sumatra, Indonesia. Photo by Dr. John Dransfield, Royal Botanic Gardens, Kew/Palmweb.
Scientific Classification
Genus: Daemonorops (deh-mohn-OHR-ohps) Species: collarifera (kohl-ahr-ih-FEHR-ah)
Synonyms
None set.
Native Continent
Asia
Morphology
Habit: Solitary & clustering Leaf type: Pinnate
Culture
Survivability index
Common names
None.

Habitat and Distribution

Borneo. Widespread and common throughout Brunei. Also in Sarawak. Endemic to Borneo. D.

Daemonorops collarifera in tropical rain forest, Lambir Hills Nat. Park, Malaysia, Borneo, Sarawak. Photo by Dr. John Dransfield, Royal Botanic Gardens, Kew/Palmweb.

collarifera grows in a wide range of habitats from kerangas to mixed dipterocarp forest at altitudes up to about 800 m above sea level.

Description

Solitary or clustering rattan climbing to 7 m, rarely more, sometimes flowering when still ± stemless; stems without sheaths to about 15 mm in diam., with sheaths to about 35 mm in diam., internodes short, rarely more than 12 cm long. Sheaths bright green, armed with yellowish and blackish reflexed and upward-pointing spines arranged in partial or complete whorls, at least 1 whorl of spines being borne on a conspicuous pale green collar, pale brown indumentum abundant between and on the spines, spines around the sheath mouth ± erect, to 6 cm long, pale yellowish-green; knee absent or very poorly developed. Leaf to about 2.5 m long including the petiole to about 40 cm and cirrus to 1 m; cirrus sometimes very short or absent; leaflets about 30 on each side of the rachis, subregular (rarely) or arranged in groups of up to 7, the longest to 40 × 2 cm. Inflorescences shorter than the leaves, up to about 75 cm long; peduncle up to about 20 cm long, usually unarmed; prophyll and primary bracts up to about 25 cm long, dull brown, thin, bearing pale indumentum, tattering and soon falling, the prophyll usually bearing a few spine groups, otherwise the bracts usually unarmed; subsequent bracts not conspicuous; male rachillae rather short, to 2 cm long, bearing strictly distichous crowded flowers to 4 × 1 mm; female rachillae up to about 9 cm long, bearing distichous but rather distant flower pairs, the female about 5 × 2 mm. Mature fruit rounded, about 20 mm in diam., beaked, covered in 15-17 vertical rows of pale brown, sometimes dark-edged scales. Seed rounded, about 15 mm in diam.; endosperm ruminate. Seedling leaf not known. (J. Dransfield, The Rattans of Brunei Darussalam. 1997)/Palmweb. Editing by edric.

D. collarifera grows in a wide range of habitats from kerangas to mixed dipterocarp forest at altitudes up to about 800 m above sea level. For differences between it and D. atra see the latter. D. collarifera is very closely related to D. geniculata from Peninsular Malaysia. (J. Dransfield, The Rattans of Brunei Darussalam. 1997)/Palmweb.

Culture

Cold Hardiness Zone: 10b

Comments and Curiosities

Etymology: From the Latin, literally; bearing collars.

"These rattan species slowly grow to maturity in shade in the forest undergrowth. They are short stemmed, and non-climbing." (Dr. John Dransfield)