討論:阿里山薊

山羊百科，林文智老師的植物、山岳、攝影紀錄

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。