Calamus siphonospathus var. sublaevis Image
Calamus siphonospathus var. sublaevis
Copyright © Phil Markey

Calamus siphonospathus var. sublaevis

Family: Arecaceae    棕櫚樹

通用名稱: Lanyu Island Rattan

科學同義:
Calamus batanensis

共同的名字同義:
Lanyu sheng-teng

枝條抗寒性區: 10b     英國和美國的地帶地圖

A solitary, tall, water-loving, fast growing, dioecious, forest understorey, climbing palm. Not known in cultivation, locally common in the wild. It has a spiny, green stem, 30 m. (98 ft.) tall, 6 cm. (2.5 inch) diameter with no obvious leaf scars, and large segmented, pinnate (feather) leaves, 1.5 m. (5 ft.) long, 0.6 m. (2 ft.) wide, light green above and beneath. Flagella absent Cirri present.

This is the type specimen of Lanyu Island, Taiwan also the nearby Batan Islands of the Philippines. This rattan grows between 200 m. and 550 m. elevation on islands.

Calamus siphonospathus var. sublaevis naturally occurs on islands in moist forest, and is heavily effected by the surrounding sea temperatures, which are constant and often form sea mist and cloud. In this type of natural environment temperature fluctuations are slight, and this palm prefers a constantly hot and humid climate with little temperature difference between day & night, and Summer & Winter. This palm will not tolerate cool for very long.

鑑別:
Stems solitary, to 30 m long and 5 cm diameter (with leaf sheaths); leaf sheaths yellowish-brown, sparsely covered with needle-like, yellowish spines to 1 cm long; knee obscure; ocreas present, membranous; flagella absent; petioles to 20 cm long; pinnae to 50 per side of rachis, linear, regularly arranged, closely spaced to 2 cm apart; cirri present, to 1 m long. Inflorescence bracts open and diameter, yellowish-brown.

一般資料:
Observations

分佈:

最初是從, Taiwan

Can be found throughout the island, but very comon between 200-500 m. One needs to walk into the forest considerable distance from the paths to find mature specimens, as many have been cut by ratan cutters.

地點: Lanu Island, Taiwan (22.059177°N, 121.515999°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)。
Calamus siphonospathus var. sublaevis 疊印圖像 ©2018 Trebrown - 擅自否重新分配。


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