Chrysalidocarpus pembana

Dypsis (DIP-sis) pembana (pehm-BAH-nah)
Photo by Ken Johnson
Scientific Classification
Genus: Dypsis (DIP-sis) Species: pembana (pehm-BAH-nah)
Synonyms
None set.
Native Continent
Africa
Morphology
Habit: Clustering Leaf type: Pinnate
Culture
Survivability index
Common names
Mpapindi, less often Mpopo wa mwitu (Swahili).

Habitat and Distribution

Dypsis pembana is endemic to Tanzania: Pemba. Moist lowland

Clayton York's Garden, Utopia Palms & Cycads, Queensland, Australia. Photo by Wal.

forest, littoral forest; alt. 1-50 m.

Description

Clustering palm. STEMS 4-12 m high, 6-15 cm in diam.; internodes to 24 cm long, pale brown to green, strongly ringed with leafscars. LEAVES about 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 about 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, about 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 in 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 and H. Beentje. 1995)/Palmweb. Editing by edric.

Culture

Cold Hardiness Zone: 10a

Comments and Curiosities

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 Pteropus 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 and H. Beentje. 1995)/Palmweb.

Conservation: Vulnerable. Numbers are estimated at 3000, but these are all within a single forest. (J. Dransfield and H. Beentje. 1995)/Palmweb.

Uses: HB has seen trunks of this species used to construct a football-goal near Ngezi forest; no other uses known. (J. Dransfield and H. Beentje. 1995)/Palmweb