| 词条 | Erigeron ursinus |
| 释义 |
|regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Asterids |ordo = Asterales |familia = Asteraceae |tribus = Astereae |genus = Erigeron |species = E. ursinus |binomial = Erigeron ursinus |binomial_authority =S.L.Welsh & Goodrich 1983 |synonyms_ref=[1] |synonyms=Erigeron ursinum D.C.Eaton }}Erigeron ursinus is a North American species of flowering plant in the daisy family known by the common name Bear River fleabane.[2] It is native to the western United States, from Montana and Idaho south as far as Arizona and New Mexico.[2]Erigeron ursinus grows in sunny locations in sagebrush and in open coniferous woodlands. It is a small perennial herb rarely more than 8 centimeters (3.2 inches) tall, producing rhizomes and a branching underground caudex. The inflorescence is made up of only one flower heads per stem. Each head contains 14–30 white, pink, or purple ray florets surrounding numerous yellow disc florets.[3] References1. ^Tropicos, Erigeron ursinus D.C. Eaton {{Taxonbar|from=Q15594490}}{{Astereae-stub}}2. ^Biota of North America Program 2014 county distribution map 3. ^1 Flora of North America, Erigeron ursinus D. C. Eaton 1871. Bear River fleabane 3 : Erigeron|Flora of the Western United States|Plants described in 1871 |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。