討論:阿里山薊

山羊百科,林文智老師的植物、山岳、攝影紀錄

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Cirsium arisanense Kitam

Stems 0.5-1 m tall, erect, sulcate-striate, upper surface cobwebby pilose to densely villous. Radical leaves lanceolate, 15-30 cm long, apex acuminate, base subsessile or narrowed into winged spinose petiole, pinnatifid, segments (6-)8-9, 5-12 mm long, puberulous or glabrate on both surfaces; cauline leaves gradually smaller, lanceolate, apex acuminate, base broadly auriculate-amplexicaul, pinnatifid, spines on margins 6-12 mm long. Heads solitary or 2 or 3 congested, terminating branches, short pedunculate, 2.5-3.5 cm across; involucre campanulate, 15-19 x 20-30 mm, bracts 6-seriate, outer ones shorter, linear-lanceolate to oblong-lanceolate, inner bracts often purple in purple flowered plants; corolla dark purple, purple, or yellowish white, 11-16 mm long, limb shorter than tube. Achenes oblong, 2.5 mm long, compressed, obscurely 4-ribbed. Chromosome number, 2n = 34 (Peng & Hsu, 1978). Endemic; meadows and ridges on mountain peaks, 2,300-3,500 m.


阿里山蓟 Cirsium arisanense Kitam. in Act. Phytotax. et Geobot. 1:148, 1932 et in Mem. Coll. Sci. Kyoto Univ. Ser. B. 13:78, 1937; S. Y. Hu in Quart. Journ. Taiwan Mus. 19 (1—2):50, 1966.

根纺锤状,粗6毫米。根状茎短。茎高约23厘米,被柔毛。基生叶花期生存,长12厘米,宽4厘米,顶端渐尖,基部渐狭成宽8毫米的翼柄,羽状深裂,侧裂片8对,卵形,再次羽状半裂或3半裂,小裂片卵形,顶端成长6毫米的硬针刺,边缘有针刺状缘毛,上面绿色,几无毛或有柔毛,有光泽,下面淡绿色,沿脉上的毛较多;中下部茎叶多数,长10-12厘米,基部抱茎;上部茎叶渐小。全部叶质地厚

头状花序在茎枝顶端排成圆锥花序,基部有苞叶,苞叶2-3枚,椭圆形,长2-3厘米,羽状深裂,裂片针刺状,针刺长5-6毫米。总苞钟状,有稀疏蛛丝毛,直径1.5厘米。总苞片约7层,外层披针形,长5毫米,顶端短针刺,针刺直立;中层披针形,长8-10毫米,中部以上平展或直立,顶端有短针刺;内层线状披针形,长14毫米,顶端有极短的针刺。小花黄白色,长1.4厘米,细管部长6毫米,檐部长8毫米,不等5裂。冠毛污白色,长11毫米。

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