Northeastern Asian Flora
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Alsophila spinulosa (Wall. ex Hook.) R.M.Tryon   (redirected from: Cyathea tuyamae H.Ohba)
Family: Cyatheaceae
[Alsophila boninsimensis Christ, moreAlsophila confucii Christ, Alsophila decipiens Scott ex Bedd., Alsophila fauriei Christ, Amphicosmia decipiens (Scott) Bedd., Cyathea austrosinica Christ, Cyathea boninsimensis Copel., Cyathea boninsimensis var. ramosa Tuyama, Cyathea confucii (Christ) Copel., Cyathea decipiens (Scott) C.B.Clarke & Baker, Cyathea fauriei Copel., Cyathea spinulosa Wall. ex Hook., Cyathea taiwaniana Nakai, Cyathea tuyamae H.Ohba, Hemitelia beddomei C.B.Clarke, Hemitelia boninsimensis Christ ex Diels, Hemitelia decipiens (Scott) Scott]
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  • Japan Flora
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Japan Flora: Trunk simple, 3 m, high or more, 10-20 cm. across near the top, densely covered with coarse wiry aerial roots; fronds crowded at the top of trunk, widely spreading, large, 1.5-2 m. long; stipes and rachis dark brown, slightly lustrous, spiny and asperous, with pale brown scurfy hairs while young, the stipes often 4 cm. across near base; pinnae many, chartaceous-herbaceous, 40-60 cm. long, 20-25 cm. wide, abruptly caudate-acuminate, green and gla­brous above, paler beneath, equilateral, bipinnatiparted, the rachis densely short-pilose on upper side; pinnules many, hori­zontally spreading, linear-lanceolate, 7-10 cm. long, about 20 mm. wide, gradually acuminate, approximate, closely pinnati- parted, with deciduous ovate thin scales 1-2 mm. long along the costae and costules beneath; ultimate segments oblong, sub­acute, slighdy falcate, serrulate; indusia thinly membranous, globose, hyaline, easily broken when dried.

Honshu (Hachijo Isl.), Shikoku, Kyushu. Ryukyus and Formosa.

 

Alsophila spinulosa
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Development supported by College of Agriculture and Life Sciences of Seoul
National University and Korea National Arboretum of Korea Forest Service.
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