1. Compositae (菊科)
2. Cirsium (蓟属)
3. Cirsium arvense (丝路蓟)

学名(拉丁名)	Cirsium arvense
中文名	丝路蓟
命名人	(L.) Scop.
中文科名	菊科
拉丁属名	Cirsium
类型	species
拉丁科名	Compositae
中文属名	蓟属

1	Lower cauline leaves pinnately divided, segments with 2-5 triangular spiny teeth	(2)
1 +	Lower cauline leaves simple, or if lobed then with entire spinulose lobes	(3)
2 (1)	Leaves ± concolorous, green, glabrous or abaxially sparsely cobwebby. (45)	a var. arvense
2 (1) +	Leaves discolorous, abaxially grayish white and densely felted, adaxially green and glabrous. (45)	b var. alpestre
3 (1)	Leaves ± concolorous, green, glabrous or abaxially sparsely cobwebby. (45)	c var. integrifolium
3 (1) +	Leaves discolorous, abaxially grayish white and densely and thickly felted, adaxially green and glabrous or sparsely cobwebby. (45)	d var. vestitum

Herbs 30-160 cm tall, perennial, dioecious. Roots far creeping, bearing adventitious shoots. Stems erect, branched above, unwinged. Leaf surface smooth. Capitula often numerous, terminal, corymbose. Involucre ± narrowly ovoid, 1.5-2 cm in diam. Phyllaries imbricate, in 5-7 rows, lacking wings and scarious appendage; outer and middle phyllaries triangular to ovate, 3-8 × 1.2-2.5 mm, apex acute; inner phyllaries elliptic-lanceolate to broadly linear, 9-20 × 1-3 mm, apex acute to acuminate and scarious. Corolla reddish purple or rarely white; female florets 1.6-2.4 cm, tube 1.3-1.8 cm; male florets 1.5-1.8 cm, tube 0.9-1.2 cm. Achene yellowish, 3-4.5 mm. Pappus bristles dirty white, 2.5-3.5 cm.

Moist places, ditches, farmlands, lakesides, grasslands, mountain slopes, roadsides, near villages, by rivers, wet or flooded lands; 100-4300 m. Anhui, Chongqing, Fujian, Gansu, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, Sichuan, Xinjiang, Xizang, Zhejiang [Afghanistan, India, Japan, Kazakhstan, Korea, Mongolia, Nepal, Russia; SW Asia, Europe].

Cirsium arvense is one of the world’s most noxious weeds of cultivated land. Its strong potential for vegetative multiplication from long trailing roots or root fragments results in morphologically uniform clonal stands, which at times have led to the recognition of some of the variants as distinct species.

Cirsium arvense is one of the world’s most noxious weeds of cultivated land. Its strong potential for vegetative multiplication from long trailing roots or root fragments results in morphologically uniform clonal stands, which at times have led to the recognition of some of the variants as distinct species.

Cirsium arvense
Family Name:	Compositae	Genera name:	Cirsium
Species name:	arvense	Genera status:
NLR:		Comments: