Manjekia maturbongsii

Family: Arecaceae    椰子の木

共通名: Manjek Palm

科学的なシノニム:
Adonidia maturbongsii

耐寒ゾーン: 10b     英国と米国ゾーンの天気画像を見る

Manjekia maturbongsii 知識

識別:
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.

一般的な情報:
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.

分布:

へのネイティブ, 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.

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

観測
マップは、完全な、自然分布を表していない可能性があります。 (マーカーは、観測データを示している)。

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