Daemonorops microstachys Becc., Rec. Bot. Surv. India 2: 225 (1902)

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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
Found scattered throughout Brunei. Elsewhere throughout Borneo. Endemic. (J. Dransfield, The Rattans of Brunei Darussalam. 1997)A

Discussion

  • D. microstachys is often found on unusual soil types, such as poor ridge top soils and forest marginal to kerangas. There is a great range in size, and within individuals, inflorescences may vary in size according to age. The “stemless” habit, lack of knee and the arching inflorescence with rusty-brown rachillae and green young fruit should help in its identification. (J. Dransfield, The Rattans of Brunei Darussalam. 1997)A

Description

  • Clustering ± stemless rattan with a decumbent or short erect stem not exceeding 1 m tall; stem without sheaths c. 20 mm diam., with sheaths to 50 mm diam., frequently less, internodes short, c. 2 cm long. Sheaths dull green with abundant mid to dark brown indumentum and armed with upward-pointing or horizontal spines from 3-30 mm long, those at the base of the petiole generally upward-pointing and much longer; knee absent. Leaf ecirrate to 2 m long, rarely more, usually much less; petiole to 35 cm, armed with abundant long horizontal spines, scattered or in whorls, to 3 cm; leaflets to 35 on each side of the rachis, regularly arranged, the longest to 27 × 2.5 cm, usually less. Inflorescences usually borne on a slender peduncle arching out of the crown, to 20 cm long; partial inflorescences usually ± congested into a head at the end of the peduncle; female rachillae rusty tomentose, to 4 cm, male similar, to c. 2 cm. Mature fruit globose or top-shaped, to 10 × 8 mm and covered in 15-16 vertical rows of green turning straw-coloured or brown scales. Seed globose, c. 7 mm diam.; endosperm deeply ruminate. Seedling leaf not known. (Fig. 16). (J. Dransfield, The Rattans of Brunei Darussalam. 1997)A

Materials Examined

  • BEL: Labi, Bt.Teraja, Sands 5457; Labi, Bt.Teraja, Simpson 2127; Sungai Liang, Andulau F.R, Ashton S 21572. TEM: Amo, Bt.Belalong, Wong 1390; Amo, K.Belalong, Dransfield J. 6670; Amo, K. Belalong, Stockdale 53; Stockdale 62; Stockdale 63; Amo, Ulu Belalong, Dransfield J. 7380. TUT: Ulu Tutong, Bukit Bahak, Kirkup 468. (J. Dransfield, The Rattans of Brunei Darussalam. 1997)A