Calamus malawaliensis J.Dransf., Kew Bull. 36: 805 (1982)

Primary tabs

http://media.e-taxonomy.eu/palmae/photos/palm_tc_29678_1.jpg

Distribution

Map uses TDWG level 3 distributions (http://www.nhm.ac.uk/hosted_sites/tdwg/geogrphy.html)
Borneopresent (World Checklist of Arecaceae)B
Philippinespresent (World Checklist of Arecaceae)B
Known only from 2 collections from Pulau Malawali; endemic. (J. Dransfield, The Rattans of Sabah. Sabah Forest Records 13.. 1984)A

Discussion

  • C. malawaliensis is most closely related to C. microsphaerion; it lacks the brown scales on the sheaths of the latter, and the whole plant dries pale bluish-green. The rachillae are much smaller and the fruit has shiny convex scales. It is not known if the fruit always contains two seeds. Pulau Malawali is ultrabasic, so the habitat is probably similar to that of C. microsphaerion. (J. Dransfield, The Rattans of Sabah. Sabah Forest Records 13.. 1984)A

Etymology

  • After the type locality (J. Dransfield, The Rattans of Sabah. Sabah Forest Records 13.. 1984)A

Uses

  • Useless according to the collectors, Charles Phillipps and Dewol Sundaling. (J. Dransfield, The Rattans of Sabah. Sabah Forest Records 13.. 1984)A

Description

  • Very slender rattan with stems climbing to 7 m; stem without sheaths to 4 mm, with to 7 mm diam.; internodes to 11 cm. Leaf sheaths drying very pale bluish-green, with very sparse indumentum and densely armed with short black-tipped spines to 5 mm with conspicuously swollen bases. Knee poorly developed. Ocrea inconspicuous. Leaf cirrate to 76 cm including petiole to 18 cm and cirrus to 18 cm; leaflets c. 10 on each side of the rachis, arranged irregularly in 5 groups of 1-3, fanned within the groups, the longest to 16 x 1.5 cm, unarmed, drying pale bluish-green. Only ± mature infructescence known, to 22 cm, thus much shorter than the leaves, erect, unarmed, with 4 partial inflorescences to 5 cm long; rachillae to 1 cm. Mature fruit sphejical c 7 mm diam., tipped with a beak to 0.8 x 0.8 mm and covered in 13 vertical rows of shiny convex straw-coloured scales with dark brown margins. Seeds 2, hemispherical, c. 4 mm diam. Seedling leaf unknown, unknown. (Fig. 52) (J. Dransfield, The Rattans of Sabah. Sabah Forest Records 13.. 1984)A

Bibliography

    A. J. Dransfield, The Rattans of Sabah. Sabah Forest Records 13.. 1984
    B. World Checklist of Arecaceae