Daemonorops acehensis Rustiami, Gard. Bull. Singapore 54: 202 (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 5 m tall. Stems without sheaths up to 10 mm diam., with sheaths up to 25 mm diam.; internodes up to 50 mm long. Leaf sheaths dark green, covered with black, very dense, single spines, up to 2.5 cm long, sheath surface covered with very dense black indumentum, leaf sheath mouth papery, armed as the rest of sheath, knee conspicuous, armed as the rest of sheath. Leaves up to 2 m long including petiole to 35 cm; abaxial and adaxial surfaces armed with long, erect spines to 3 cm long; rachis armed as petiole, sparsely covered with black indumentum; cirrus to 40 cm long, armed with regularly arranged groups of grapnel-like spines, blackish at the tip, proximally armed with single hook-like spines; leaflets mostly regularly arranged, slightly irregular towards the leaflet tip, 25 on each side of the rachis; leaflets lanceolate, papery, acute, 24-26 cm long, 2 cm wide, armed with scattered, reddish, short bristles along the main nerve on adaxial surface. Inflorescences pendulous to 20 cm long; peduncle to 4 cm long, armed with scattered, single spines; peduncular bracts papery, bearing scattered solitary spines, partial inflorescences 4; each bearing up to 6 rachillae; involucre pendulous, flat, just above the involucrophore, 5 mm long; involucrophore short, papery, 2 mm long. Female and male flowers unknown. Fruits rounded, c. 2.2 x 1.8 cm, covered in 12 vertical rows of scales encrusted in reddish brown dragon's blood. Seed ovoid, c. 18 x 7 mm, surface reticulate. (Rustiami H. 2002. Two New Species of Daemonorops (Palmae) from Sumatra. Gardens' Bulletin Singapore 54: 199-204)A

Notes