Calamus poensis Becc., Ann. Roy. Bot. Gard. (Calcutta) 11(App.): 43 (1913)

Primary tabs

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Distribution

Map uses TDWG level 3 distributions (http://www.nhm.ac.uk/hosted_sites/tdwg/geogrphy.html)
Borneopresent (World Checklist of Arecaceae)B
Known only from two collections from the summit of G Pueh. Endemic. (J. Dransfield, The Rattans of Sarawak. 1992)A

Discussion

  • C. poensis is a little known species occurring in low mossy forest on the summit of G Pueh. In 19811 searched for it but without success; it seems likely that the two collections were made on the summit of a higher peak elsewhere in the G Pueh Range. From herbarium material it seems to be close to C. marginatus but is immediately distinguished by the grouped leaflets. (J. Dransfield, The Rattans of Sarawak. 1992)A

Etymology

  • From G Pueh, the type locality (J. Dransfield, The Rattans of Sarawak. 1992)A

Uses

  • Not known. (J. Dransfield, The Rattans of Sarawak. 1992)A

Description

  • Solitary (?) or clustered (?) rather slender rattan climbing to 5 m tall; stem without sheaths c. 8 mm diam., with to c. 15 mm diam., internodes short. Sheath mottled yellowish and reddish-brown, bearing scattered, slightly reflexed yellowish-based spines, 6-12 mm long and abundant indumentum between the spines; knee poorly developed; ocrea rather conspicuous, to 5 mm long. Flagellum apparently present. Leaves ecirrate to c. 80 cm long including the petiole to c. 16 cm; petiok armed with regular lateral spines to 30 mm long; leaflets c. 20 on each side of th( rachis, arranged in groups of 2 - 8, the apical c. 3 -4 leaflets on each side crowdei together and radiating, the leaflet bases slightly swollen, the longest leaflets 30 - 35: 1.8-2 cm, bristly along the midrib and margins, transverse veinlets conspicuous Inflorescences long, slender, with a terminal flagellum, to c. 2.3 m, with 4 very la partial inflorescences; male rachillae c. 2 - 2.5 cm long; female rachillae to c. 5 ci long. Young fruit ovoid, beaked, covered in 17 vertical rows of dark brown scale: Other details not known (Fig. 93). (J. Dransfield, The Rattans of Sarawak. 1992)A

Bibliography

    A. J. Dransfield, The Rattans of Sarawak. 1992
    B. World Checklist of Arecaceae