Difference between revisions of "Calamus javensis"

Revision as of 01:14, 9 February 2015

Calamus (KAL-ah-muhs) javensis (jah-VEHN-siss)
Help to make this reference box better by uploading a representative photo of this palm.
Scientific Classification
Genus: Calamus (KAL-ah-muhs) Species: javensis (jah-VEHN-siss)
Synonyms
None set.
Native Continent
Asia
Morphology
Habit: Clustering Leaf type: Pinnate
Culture
Survivability index
Common names
Uwai Peladas (Dus., Br.), Uwai Podos (Dus.), Wi Anak (Ib.), Wi Peladas (Ib.)

Habitat and Distribution

Widespread throughout the State. Elsewhere throughout Borneo, Java, Sumatra, Peninsular Malaysia, S. Thailand, and Palawan. [[]]

Description

Extremely variable slender to very slender clustering rattan forming low thickets or climbing to 10 m or more; stem without sheaths 2-6 mm in diam., with to 10 mm in diam., internodes to 30 cm long, usually less. Sheaths bright green when fresh, frequently reddish tinged, somewhat striate, unarmed or sparsely to densely armed with horizontal spines to 5 mm; knee present; ocrea moderately conspicuous, to 10 mm, deep crimson when young, tattering with age. Flagellum to 1 m. Leaf ecirrate, very variable in form, in adult leaves always with the terminal pair of leaflets joined together for much of their length; petiole usually absent, rarely to 5 cm in some montane forms; leaflets 4-10 on each side of the rachis, grouped or more rarely subregular, lanceolate to spathulate, the lowermost 1-2 pairs often swept back across the stem, longest leaflets to 20 × 5 cm but usually much less, transverse veinlets conspicuous; young leaves tinged pink. Male and female inflorescences superficially similar with 2-5 partial inflorescences bearing crimson rachillae ± at right angles. Ripe fruit ovoid, about 12 × 8 mm, with a short beak and covered in 15-21 vertical rows of pale greenish white scales. Seed somewhat angular; endosperm homogeneous. Seedling leaf with 4 broad shiny leaflets. (J. Dransfield, The Rattans of Brunei Darussalam. 1997)

C. javensis occurs in all major forest types except for mangrove, at altitudes from sea level to the tops of mountains. It is extremely polymorphic. The two most distinctive taxa in Brunei related to C. javensis have already been separated at the specific level, viz: C. tenompokensis and C. amplijugus. The other taxa in this complex appear to intergrade. (J. Dransfield, The Rattans of Brunei Darussalam. 1997)

Culture

Comments and Curiosities

Etymology: From the Latin, literally; of Java.

Uses: Produces an excellent cane for binding, to make fish traps and carrying baskets.