Common name: Melancholy Thistle
Scientific name: Cirsium heterophyllum 堆心薊
Genus: Cirsium 薊屬
Family: Asteraceae or Compositae 菊科, aster , daisy, composite or sunflower family
Remarks*:
Origin: Native.
Date: 7th June
167 A tall perennial thistle, can reach up to 120cm.
173 Stem ribbed.
173_1 Stem covered with cottony hairs.
177 Stem leaves. Basal leaves elliptic-lanceolate, long stalked (could not be seen above).
176 Middle stem leaves green above, margins with soft teeth.
175 Middle stem leaves with broad auricled base clasping stem.
178 Under surface of leaf is white-felted.
179
179_1 Under surface of leaf is densely white-felted (felted: matted with very short interlocked hairs, having the appearance or texture of felt 毛氈).
180 Flowering head large, 3.5-5cm, usually solitary, purple.
169 Base of the flower head.
168
168_1 Involucral bracts more or less glabrous, with a raised mid-rib and are red-tipped.
170
171 Flower head composed of disc florets only.
170_1 Styles (lighter purple) are emerging from the disc florets with 5 petals (darker purple).
No comments:
Post a Comment