Английская Википедия:Chelone (plant)
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Chelone is a genus of four[1] species of perennial herbaceous plants native to eastern North America.[1][2] They all have similarly shaped flowers (which led to the name turtlehead due to their resemblance to the head of a turtle), which vary in color from white to red, purple or pink.[1] Chelone cuthbertii, C. glabra, and C. lyonii are diploid and C. obliqua is either tetraploid or hexaploid, depending on their slight differences in morphology and localities.[1]
Etymology
Chelone is derived from Greek meaning ‘turtle-like’, in reference to its turtle head-shaped corollas.[3]
Relationships to other plants
The closest relative of Chelone is Nothochelone from western North America.[1] [3] [6] Nothochelone nemerosa is the species most closely related to the genus [3] [6]. Chelone is more closely related to it than to other members of the family such as snapdragons, plantains, and foxglove.[4]
Species
Chelone glabra is the most widely distributed species of the genus: from Georgia to Newfoundland and from Mississippi to Manitoba;[5] [5] [6] the other three are found in more restricted areas.
Chelone cuthbertii is found in two areas: the Blue Ridge of North Carolina and the coastal plain of Virginia.[1] [5] [6]
Chelone lyonii is found in the Blue Ridge of Tennessee, North Carolina, and South Carolina.[1] [5] [6]
Chelone obliqua is found as tetraploids in the Blue Ridge, or hexaploids in two areas: Tennessee to Arkansas and Michigan, or the Atlantic coastal plain from South Carolina to Maryland.[1] [5] [6]
The relationship between the different populations is complicated and it appears that C. obliqua in fact has arisen several times from diploid ancestors of the other three species.[1] [5] [6] The four species seem to have diverged recently.[1] [5] [6]
References
- A. D. Nelson. 2012. Chelone. Flora of North America http://floranorthamerica.org/files/Chelone03f.CH%20for%20Prov%20Pub.pdf
- NELSON, A.D. 1995. Polyploid evolution in Chelone (Scrophulariaceae). Ph.D. dissertation, University of. Oklahoma, Norman.
- Chelone L. Plants of the World Online
- Accepted species Plants of the World Online
- ↑ 1,0 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 1,9 Шаблон:Cite journal
- ↑ Шаблон:PLANTS
- ↑ Gledhill, David (2008). "The Names of Plants". Cambridge University Press. Шаблон:ISBN (hardback), Шаблон:ISBN (paperback). pp 103, 276
- ↑ Шаблон:Cite journal
- ↑ Шаблон:PLANTS
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