Daemonorops dransfieldii Rustiami, Gard. Bull. Singapore 54: 199 (2002)

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Distribution

Map uses TDWG level 3 distributions (http://www.nhm.ac.uk/hosted_sites/tdwg/geogrphy.html)
Sumaterapresent (World Checklist of Arecaceae)B

Diagnosis

Biology And Ecology

Description

  • Clustering small rattan up to 6 m tall. Stems without sheaths up to 15 mm diam., with sheaths up to 25 mm diam.; internodes up to 150 mm long. Leaf sheaths green, covered with black, oblique spines joined at base, some bulbous-based, up to 3 cm long, sheath surface ridged with caducuous black indumentum, leaf sheath mouth armed as the rest of sheath; knee conspicuous, singly plicate, armed as the rest of sheath. Leaves up to 3 m long including petiole to 25 cm, armed adaxially with short, erect, scattered spines up to 4 mm long, abaxially armed with erect, rarely solitary spines, up to 15 mm long; rachis unarmed, or armed only slightly proximally; cirrus up to 1.5 m long, armed with regularly arranged groups of grapnel- like spines, blackish at the tip; leaflets mostly regularly arranged, slightly irregular above, 30 on each side of the rachis, stiff, horizontal; leaflets lanceolate, papery, acute, 25-31 cm long, c. 2.5 cm wide, armed with scattered, reddish, short bristles along the main nerve on both surfaces. Inflorescences pendulous to 35 cm long, peduncle 13-16 cm long, armed distally with groups of spines; peduncular bracts leathery, erect, c. 17 cm long, 3 cm wide, ellipsoid oblong, covered by rusty indumentum, armed with very rare, scattered spines; partial inflorescences 6, each bearing up to 11 rachillae; involucre pendulous, flat, just above the involucrophore, c. 5 mm long; involucrophore short, papery, c. 2 mm long. Female and male flowers unknown. Fruits broadly oblong, c. 2.5 x 1 cm, covered in 9 vertical rows of scales encrusted with reddish brown dragon's blood. Seed ovoid, c. 18 x 7 mm, surface smooth. (Rustiami H. 2002. Two New Species of Daemonorops (Palmae) from Sumatra. Gardens' Bulletin Singapore 54: 199-204)C

Notes