| 词条 | Nabalus barbatus |
| 释义 |
|name = Nabalus barbatus |image = Nabalus barbatus.jpg |status = G3 |status_system = TNC |regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Asterids |ordo = Asterales |familia = Asteraceae |tribus = Cichorieae |genus = Nabalus |species = N. barbatus |binomial = Nabalus barbatus |binomial_authority = (Torr. & A.Gray) ) A.Heller |synonyms = Prenanthes barbata {{au|(Torr. & A.Gray) Milstead}} }}Nabalus barbatus, the barbed rattlesnakeroot,[1] is a plant in the Composite family. It is native to the Southeastern United States where it is found in small numbers in a few disjunct areas of remaining natural grassland. Because of this, it is considered a globally rare species, with only 35-70 remaining populations. Much of its natural habitat of prairie and savanna has been destroyed.[2] In 2010 it was reclassified from the genus Prenanthes to Nabalus.[3] It is a perennial that flowers in early fall, [4] although flowering has been reported into November.[5] HabitatThe natural habitat of this species is prairie and savanna.[2] It is known from rich hardwood and pine-oak forest as well as mesic ravine slope forest in the pineywoods of east Texas.[5] RangeThis species occurs from Oklahoma, Arkansas, and Kentucky south from Texas to Georgia.[2]. It occurs in nine counties in central and southeast Arkansas[6] and in 13 counties in the eastern four counties of Texas.[5] References1. ^{{PLANTS|id=PRBA|taxon=Prenanthes barbata|accessdate=13 October 2015}} {{Taxonbar|from=Q16976832}}2. ^1 2 http://explorer.natureserve.org/servlet/NatureServe?searchName=Prenanthes+barbata Natureserve 3. ^https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=38273#null 4. ^Flora of North America, Prenanthes barbata 5. ^1 2 Singhurst, J.R., O’Kennon, R.J., Holmes, W.C. 2004. The genus Prenanthes (Asteraceae:Lactuceae) in Texas. Sida 21(1):181–191. 6. ^Gentry, J.L.; Johnson, J.P.; Baker, B. T.; Witsell, C. T.; Ogle, J. D., eds. 2013. Atlas of the Vascular Plants of Arkansas. University of Arkansas Herbarium, Fayetteville, AR, USA 1 : Cichorieae |
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