Syagrus stenopetala

Family: Arecaceae    棕榈树

通用名称: 没有已知的

科学同义:
Syagrus orinocensis

枝条抗寒性区: 10a     英国和美国的地带地图

鉴别:
This is an old species, which was placed as Syagrus orinocensis in 1969, due to regarded similarities between the two, until now (Nobilick 2013). Syagrus stenopetala resembles S. orinocensis in the pinnae being arranged in loose clusters of 2-3 and 2.0-2.4 cm wide. The two species differ by the following: S. stenopetala is clustering with stem hardly thickened at the base, S. orinocensis is solitary and prominently thickened at the base; 13-17 leaves in the crown opposed to 10-12 leaves in S. orinocensis; Longer peduncular bract, longer and larger number of rachillae; S. stenopetala flowers mostly in the autumn and winter and fruits in the spring, while S. orinocensis fruits mostly in the autumn and winter and fruits and flowers more in the spring and summer. They also grow in very different habitats, with S. stenopetala growing near the northern, dry coastal mountains of Venezuela in semi-deciduous forests on dry spiny savannahs, while S. orinocensis grows in the southern, wet, Orinoco River, growing on rocky granitic outcrops.

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