1
<taxonx xmlns:
dc=
"http://digir.net/schema/conceptual/darwin/core/2.0" xmlns:
mods=
"http://www.loc.gov/mods/v3" xmlns:
xsi=
"http://www.w3.org/2001/XMLSchema-instance">
5 <mods:title>The Rattans of Brunei Darussalam
</mods:title>
7 <mods:name>Dransfield, J.
</mods:name>
9 <mods:dateIssued>1997</mods:dateIssued>
10 <mods:publisher>Ministry of Industry and primary Resources, Brunei Darussalam
</mods:publisher>
15 <treatment type=
"species">
17 <name>Calamus laevigatus Mart. var. laevigatus
</name>
18 <author>Mart.
</author>
19 <citation>Hist. Nat. Palm.
3:
339 (
1853)
</citation>
20 <bibref>Dransfield, Mal. Forester
41:
334 (
1978)
</bibref>
21 <bibref>Dransfield, Man. Ratt. Malay Pen.
138 (
1979)
</bibref>
22 <bibref>Dransfield, Ratt. Sabah
102 (
1984)
</bibref>
23 <bibref>Dransfield, Ratt. Sarawak
103 (
1992)
</bibref>
25 <name>Calamus retrophyllus
</name>
26 <author>Becc.
</author>
27 <bibref>Becc., Ann. Roy. Bot. Gard. Calcutta
11 (Suppl.):
123 (
1913)
</bibref>
30 <div type=
"introduction"></div>
31 <div type=
"etymology"><lang>Latin
</lang> - smooth
</div>
32 <div type=
"vernacular">Rotan Liah (Br.,Mal.), Wi Anak (Ib.)
</div>
33 <div type=
"description">Solitary (very rarely clustered) moderate high-climbing rattan to
30 m or more; stem without sheaths
8-
10 mm diam., with to
20 mm, internodes to
25 cm. Sheaths dull to pale green, drying very pale brownish-green, armed with sparse horizontal
± triangular spines borne on swollen bases, sometimes also with very faint horizontal ridges, sometimes unarmed, and with brown scales abundant on young leaf surfaces; knee conspicuous; ocrea scarcely developed. Leaf cirrate to
1 m, including the cirrus to
65 cm; petiole absent; leaflets c.
20 on each side of the rachis, concolorous, arranged irregularly, the basal up to
8 pairs on each side very close and strongly reflexed across the leaf sheaths forming a chamber in which ants frequently nest; upper leaflets in groups of
2-
4 and fanned within the groups, the largest leaflets to c.
20 × 0.5-
2 cm, somewhat plicate, drying very pale green. Inflorescences usually about the same length as the leaves, without a terminal flagellum, and with up to
10 partial inflorescences; main bracts rather densely armed with black-tipped, pale, bulbous-based spines and brown indumentum, ultimate bracts and bracteoles with abundant minute spines producing a rough feel. Mature fruit rounded, c.
12 mm diam., with a short beak and covered with
15-
19 vertical rows of pale straw- to whitish-coloured scales, sometimes flecked with red. Seed rounded, c.
10 mm diam., deeply pitted; endosperm slightly ruminate. Seedling leaf bifid. (Fig.
35, Pl.
10D).
</div>
34 <div type=
"distribution">Throughout Brunei. Elsewhere throughout Borneo and Peninsular Malaysia, rather rare in Sumatra.
</div>
35 <div type=
"biology_ecology"></div>
36 <div type=
"conservation"></div>
37 <div type=
"uses">Produces an excellent cane of the same diameter as rotan sega but as the plant is usually solitary, harvests are not great.
</div>
38 <div type=
"discussion">C. laevigatus var. laevigatus is a very widespread species occurring at altitudes up to
850 m above sea level and on a variety of soils. This is a very variable taxon. Some forms have very narrow leaflets. This species can easily be seen from the Labi Road in Andulau Forest Reserve.
</div>
39 <div type=
"materials_examined">BEL: Sungai Liang, Andulau F.R, Fuchs
21153. TEM: Amo, Belalong, Stockdale
11; Amo, Bt.Belalong, Dransfield J.
7111. TUT: Lamunin, Dransfield J.
6805.
</div>