| 词条 | Rugelia |
| 释义 |
| name = Rugels ragwort | image = RugelsRagwort.jpg | regnum = Plantae | status = G3 | status_system = TNC | unranked_divisio = Angiosperms | unranked_classis = Eudicots | unranked_ordo = Asterids | ordo = Asterales | familia = Asteraceae | tribus = Senecioneae | genus = Rugelia | genus_authority = Shuttlew. ex Chapm. | species = R. nudicaulis | binomial = Rugelia nudicaulis | binomial_authority = Shuttlew. ex Chapm. }}Rugelia nudicaulis (Rugel's Indian plantain[1] or Rugels ragwort) , the sole species of the genus Rugelia, blooms in summer. It is a wildflower endemic to higher elevations in the Great Smoky Mountains.[2] It is a rare species in Tennessee.[3] First placed in the genus Senecio, then moved to Cacalia it was finally placed in a genus of its own, Rugelia. Genetic diversity in this plant, assessed using allozymes, is so low that the species may not survive changing environmental conditions.[4] See also
References1. ^{{PLANTS|id=RUNU2|taxon=Rugelia nudicaulis|accessdate=26 October 2015}} 2. ^University of Tennessee Herbarium 3. ^[https://tn.gov/assets/entities/environment/attachments/2014TennesseeRarePlantListu.pdf Tennessee state list ] 4. ^Journal of Heredity article
6 : Senecioneae|Monotypic Asteraceae genera|Endemic flora of the United States|Flora of North Carolina|Flora of Tennessee|Natural history of the Great Smoky Mountains |
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