Calamus meghalayensis

Family: Arecaceae    棕櫚樹

通用名稱: 沒有已知的

科學同義:
Calamus floribundus var. depauperatus

共同的名字同義:
risigin, tairu, rita (India)

枝條抗寒性區: 10a     英國和美國的地帶地圖

鑑別:
Stems to 2 m long and 0.5-0.6 cm diameter (with leaf sheaths). Leaf sheaths green with brown tomentum, sparsely covered with brown, flattened, horizontally spreading spines to 1 cm long; knees present; ocreas present, less than 0.5 cm long, densely bristly; flagella present, to 2 m long; petioles 6-18 cm long, sparsely covered laterally and abaxially with recurved spines to 0.5 cm long; rachis 9-24 cm long, abaxially with few, recurved, solitary spines; pinnae 4-5 per side of rachis, lanceolate, arranged in distant groups or solitary, 13-23 cm long, 2-3.5 cm wide, minutely spiny along the margins, the apical pair free or briefly joined at their bases; cirri absent. Inflorescences to 1 m long, flagellate; partial inflorescences inserted above the mouth of the partial inflorescence bracts; partial inflorescence bracts closely sheathing the main axis, with recurved spines, bristly at the apex; staminate inflorescences branched to two orders, with up to 3 partial inflorescences; rachillae 0.5-1 cm long; rachillae bracts distichously arranged, to 1 mm long, more or less glabrous; floral bracteoles to 0.5 mm long; staminate flowers to 2 mm long, to 20 per rachilla, arranged alternately and distichously along the rachillae; calyx 1.5 mm long, tubular except for the 3-lobed apex; corolla 2 mm long, with 3 valvate petals free to the base; pistillode 1 mm long; pistillate inflorescences branched to two orders, with up to three partial inflorescences, each with up to 12 rachillae; rachillae 1-2.5 cm long; rachillae bracts distichously arranged, to 2.5 mm long, with brown hairs; pistillate flowers to 20 per rachilla, borne alternately and distichously along the rachillae; sepals to 3 mm long, connate basally for ca. two-thirds their length, lobed above; petals to 3 mm long, free; fruits not seen, according to Basu (1992) globose, to 1 cm diameter, yellowish.

一般資料:
Assam India

分佈:

最初是從, India

Northeastern India (Meghalaya) lowland forest at low elevations in the Khasi Hills.

地點: Assam India (25.746466°N, 91.494141°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)。


添加您的評論對這個物種。

Google

嚴格:版權所有 © 2018 zh-tw.trebrown.com - Calamus meghalayensis - 段落文本,照片和插圖