Dypsis pembana (H.E.Moore) Beentje & J.Dransf., Palms Madagascar : 219 (1995)

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Introduction

  • A curious 'outlier' of the genus, only known from Pemba Island, just off the African mainland, from which it takes its name. Pemba has several more links with Madagascar: there is the fruit bat Pter opus voeltzkowi, with the other members of its genus in Madagascar, the Comoro Islands and through to southeast Asia and the Pacific; and the Aroid Typhonodorum lindleyanum occurs in Pemba, Zanzibar/Unguja and Madagascar. (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Distribution

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

Biology And Ecology

Conservation

Common Name

Uses

Description

  • Clustering palm. STEMS 4-12 m high, 6-15 cm diam.; internodes to 24 cm long, pale brown to green, strongly ringed with leafscars. LEAVES c. 10 in the crown, arching, arranged in ± 3 ranks; sheath 50-60 cm long, waxy green, sparsely tomentose when young; rachis to m long, in mid-leaf to 1.5 cm wide; leaflets 40-50 on each side of the rachis, regular, arching, the leaflets on opposite sides of the rachis at an angle of c. 90° with each other, dark green adaxially, abaxially waxy, the proximal 70-76 x 1.3-2.8 cm, median 46-74 x 3-3.9 cm (interval 4-5 cm), distal 14-45 x 1.4-2.4 cm, main vein 1, with 2 marginal veins, midrib prominent adaxially, apices acuminate or attenuate, abaxially with a dense cover of minute waxy scales, with small shining brown scales on all the veins, with one or a few irregularly spaced large bifid ramenta with brown centres and laciniate margins on the midrib. INFLORESCENCE interfoliar, branched to 3-4 orders with spreading branches, lengthening in fruit by some 40%; peduncle c. 60 cm long, stout, ± flattened, densely reddish tomen-tose, distally curving through 90°; prophyll > 30 cm, c. 5 cm wide, glabrous, dull waxy; peduncular bract 30-55 cm long, splitting over its length, rustypubescent or glabrous and waxy, beaked for 2-3 cm, deciduous; first order branches slightly reddish-pubescent but glabrescent, with up to 15 second order branches; rachillae glabrous, 11-19 cm long, 1-2 mm diam.; triads distant; rachilla bract 0.5-0.7 mm, obtuse to acute. STAMINATE FLOWERS only known from buds, with sepals 1.3-1.6 x 1.4-1.8 mm, concave, proximally gibbous, keeled, ciliolate; petals 2.3- x 1.5-1.8 mm; stamens 6, slightly biseriate, offset 0.2 mm, the filaments 1.4-1.5 mm and thin-cylindrical, the anthers 1.3-1.5 x 0.4-0.7 mm; pistillode columnar, 1.8-2.8 x 0.6 mm. PISTILLATE FLOWERS unknown at anthesis, the petals in fruit 2-2.6 mm long. FRUIT dark red, oblong-ovoid, 12-15 x 5-7 mm; endocarp fibrous, the fibres anastomosing. SEED 10.5-11 x 5-5.5 mm; endosperm homogeneous. (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Materials Examined