Calystegia spithamaea subsp. purshiana (Wherry) Brummitt
First published in Ann. Missouri Bot. Gard. 52: 215 (1965)
This subspecies is accepted
The native range of this subspecies is Pennsylvania to Alabama. It is a scrambling subshrub and grows primarily in the temperate biome.
Distribution
Native to:
Alabama, Georgia, Maryland, North Carolina, Pennsylvania, South Carolina, Virginia, West Virginia
Synonyms
Homotypic Synonyms
- Convolvulus purshianus Wherry in Proc. Pennsylvania Acad. Sci. 7: 163 (1933)
- Convolvulus spithamaeus subsp. purshianus (Wherry) Wherry in Bartonia 28: 33 (1957)
Heterotypic Synonyms
- Calystegia sepium var. pubescens A.Gray in Man. Bot. N. States, ed. 5: 376 (1867)
- Calystegia spithamaea var. pubescens (A.Gray) C.F.Reed in Phytologia 63: 411 (1987)
- Convolvulus sepium var. pubescens (A.Gray) Fernald in Rhodora 10: 55 (1908)
- Convolvulus spithamaeus var. pubescens (A.Gray) Fernald in Rhodora 51: 70 (1949)
- Volvulus sepium var. pubescens (A.Gray) Farw. in Amer. Midl. Naturalist 12: 130 (1930)
Publications
POWO follows these authorities in accepting this name:
- Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.
- Kartesz, J.T. in Kartesz, J.T. (1994). Convolvulaceae. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland: 217-221. Timber Press.
An alternative taxonomy had been proposed by the following authorities:
- Knapp, W.M. & Naczi, R.F.C. (2021). Vascular plants of Maryland, USA. A comprehensive account of the state's botanical diversity. Smithsonian Contributions to Botany 113: 1-151. [Cited as Calystegia spithamaea subsp. stans.]
Kew Backbone Distributions
- Fernald & Rollins in Fernald, M.L. with R. C. Rollins (1950). Gray's Manual of Botany, 8th edition: 1177-1185. Dioscorides Press.
- USDA, NRCS (2005- continuously updated). Natural Resources Conservation Services Plant Database http://plants.usda.gov/cgi_bin/topics.cgi?earl=checklist.html.
Other Data
Other Kew resources that provide information on this taxon:
Sources
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Kew Backbone Distributions
- The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
- © Copyright 2022 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
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Kew Names and Taxonomic Backbone
- The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
- © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0