| 词条 | Elymus svensonii |
| 释义 |
|image = Elymus svensonii.jpg |status = G3 |status_system = TNC |status_ref =[1] |genus = Elymus |species = svensonii |authority = G.L. Church }}Elymus svensonii, commonly called Svenson's wildrye,[2] is a species of flowering plant in the grass family (Poaceae). It is native to United States, where it is endemic to the Interior Low Plateau of Kentucky and Tennessee.[3][4] Its natural habitat is on dry, rocky, limestone river bluffs.[3] It is a rare species, with a restricted range and narrow suitable habitat. Because of these reasons it is considered to be "Vulnerable" (G3) by NatureServe. However, estimating population size is difficult due to its habitat on sheer cliffs, which are dangerous for researchers to access.[1] It is possible that in hard-to-reach areas, populations may be reasonably large. Elymus svensonii is a perennial grass. It is similar to Elymus hystrix, with which it sometimes hybridizes. It can be distinguished from Elymus hystrix by its curving lemma awns, generally larger glumes, and nodding spikes.[5]References1. ^1 Elymus'>svensonii NatureServe 2. ^{{PLANTS|id=ELSV|taxon=Elymus svensonii|accessdate=5 May 2018}} 3. ^1 {{cite web|url=http://herbarium.usu.edu/webmanual/|title=Elymus|website=Grass Manual on the Web|archive-url=https://web.archive.org/web/20170415015332/http://herbarium.usu.edu/webmanual/ |archive-date=May 28, 2017 |dead-url=no}} 4. ^{{BONAP|ref|genus=Elymus|species=svensonii|accessdate=5 May 2018}} 5. ^{{cite web |url=http://www.herbarium.unc.edu/flora.htm |title= Flora of the Southern and Mid-Atlantic States |author= Alan Weakley |date= 2015}} 1 : Elymus (plant) |
| 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。