Erigeron canadensis (synonym Conyza canadensis) is an annual plant native throughout most of North America and Central America. It is also widely naturalized in Eurasia and Australia . Common names include horseweed , Canadian horseweed , Canadian fleabane , coltstail , marestail , and butterweed .

小蓬草（Erigeron canadensis L.）是菊科飞蓬属一年生草本植物。 根纺锤状，具纤维状根；茎直立，圆柱状，有条纹；叶密集，基部叶花期常枯萎；头状花序多数，排列成顶生多分枝的大圆锥花序；花序梗细，总苞近圆柱状，淡绿色；雌花多数，舌状，白色；两性花 ...

Trimorpha canadensis (L.) Lindm. 小蓬草 （ 学名 ： Erigeron canadensis ）又名 加拿大蓬 、 飞蓬 、 小飞蓬 ，是 菊科 飞蓬属 的植物。 分布在 北美洲 以及 中国大陆 等地，生长于海拔350米至3,100米的地区，多生于荒地、田边、旷野和路旁，目前尚未由人工引种栽培。

Erigeron Species: canadensis Family: Asteraceae Life Cycle: Annual Country Or Region Of Origin: New World Distribution: wind Dimensions: Height: 0 ft. 6 in. - 7 ft. 0 in. Width: 0 ft. 6 in. - 2 ft. 0 in. Whole Plant Traits: Plant Type: Annual Weed Woody Plant Leaf Characteristics: Deciduous Growth Rate: Medium Maintenance: High Texture: Medium ...

Erigeron canadensis. 俗名：小飞蓬、飞蓬、加拿大蓬、小白酒草、蒿子草. 异名： Conyza canadensis Leptilon canadense Marsea canadensis Conyzella canadensis

Erigeron. 种名. canadensis. 拉丁名. Erigeron canadensis. 作者. L. 年代. 1753. 原产地. 北美洲. 中文俗名. 小飞蓬、飞蓬、加拿大蓬、小白酒草、蒿子草. 英文名. Butterweed. 次异名. Conyzella canadensis (synonym) Leptilon canadense (synonym) Conyza canadensis (synonym) Marsea canadensis (synonym) 国内分布

Erigeron bonariensis var. angustifolius Cabrera in Revista Mus. La Plata, Secc. Bot. 4: 88 (1941) Erigeron canadensis f. coloratus Fassett in Rhodora 31: 53 (1929) Erigeron canadensis var. glabratus A.Gray in Boston J. Nat. Hist. 6: 220 (1850) Erigeron canadensis var. grandiflorus Schwein. in W.H.Keating, Narrat. Exp. St.

C. canadensis is the only Conyza species in much of its native range, but the very different looking dwarf horseweed (Conyza ramosissima) occurs in the center of the continent, mostly concentrated in Missouri and Kansas. It is much less common in most of its range.

Native: indigenous. Non-native: introduced (intentionally or unintentionally); has become naturalized. County documented: documented to exist in the county by evidence (herbarium specimen, photograph). Also covers those considered historical (not seen in 20 years).

Conyza canadensis (L.) Cronquist According to Angiosperm Extinction Risk Predictions v1 Extinction risk predictions for the world's flowering plants to support their conservation (2024).