Manjekia maturbongsii

Family: Arecaceae    棕櫚樹

通用名稱: Manjek Palm

科學同義:
Adonidia maturbongsii

枝條抗寒性區: 10b     英國和美國的地帶地圖

Manjekia maturbongsii 學問

鑑別:
Solitary palm. Stem 10 - 15 m tall, 10 - 20 cm in diam., tapering towards apex, surface brown with white blotches, internodes 2 - 4 cm apart. Leaves c. 10 in crown; sheath 60 - 70 cm long, crownshaft 80 - 90 x 10 - 12 cm; petiole 26 - 45 cm long, rachis 2.5 - 3 m long; leaflets 25 - 30 each side of the rachis, basal leaflets 32 - 50 cm long, 1 - 4.5 cm wide, sometimes with rein up to 1 m attached, middle leaflets 40 - 49 cm long, 9 - 12 cm wide, apical leaflets 6.5 - 42 cm long, 2 - 4.5 cm wide. Inflorescence 60 - 70 cm long; prophyll 24 - 26 cm long, 6 - 8 cm wide, greenish white, splitting apically, caducous later; first peduncular bract 31 - 35 x 5 - 7 cm, attached 15 - 20 mm above prophyll insertion; peduncle 8 - 14 cm long, 2 - 2.5 cm wide; primary branches 25 - 28, longest primary branch (basalmost) 40 - 65 cm; rachillae 8 - 19 cm long, 1.5 - 3.5 mm in diam., floral triads 3 - 9 mm apart. Staminate flower 6.5 - 8 mm long, 2.5 - 3.2 mm in diam. in bud; sepals 2 - 2.4 mm long, c. 3 mm wide; petals 7 - 7.5 mm long, c. 3 mm wide; stamens 30 - 32, 4.5 - 6 mm long; filaments 1.5 - 4 mm long; anthers 3 - 3.8 mm long, 0.5 - 0.8 mm wide; pistillode c. 5 mm long, 1.2 - 1.4 mm in diam. Pistillate flower 4.5 - 5 mm long, c. 4.5 mm in diam.; sepals 3 - 4 mm long, 4 - 4.5 mm wide; petals 4 - 4.5 mm long, 3 - 3.5 mm wide; staminodes 2 - 3; gynoecium c. 4 mm long, c. 3 mm in diam. Fruit 24 - 31 mm long, 14 - 16 mm in diam.; pericarp 1.5 - 3 mm thick, endocarp 23 - 30 mm long, 12 - 12.5 mm in diam. Seed 14 - 20 mm long, 9.5 - 12 mm in diam, ellipsoid.

一般資料:
Distinguished from other genera of subtribe Ptychospermatinae (tribe Areceae) by its moderately robust, solitary habit, arching leaves, broadly lanceolate pendulous leaflets with wide, concave, praemorse apices, white inflorescence axes and terete, straw-coloured endocarp with broad, adherent, longitudinal fibres interspersed with very fine fibres.

分佈:

最初是從, Indonesia

Endangered. Lowland forest on limestone with thin soils and many sink holes, 80 - 170 m elevation. Papua Province, Biak Numfor Regency, Biak Island: forest on the road side, main road from North Biak Nature Reserve to Biak town, 0°44’20"S 135°52’57"E; North Biak Nature Reserve, Sansundi village, 0°42’S 135°50’E, Samber forest, 1°8’33"S 135°53’43"E.

地點: Indonesia (-1.045566°N, 135.884399°E)

觀察
地圖可能並不代表完整的自然分佈。 (衛星標記,顯示觀察數據)。

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