Erigeron poliospermus
| Erigeron poliospermus | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Tribe: | Astereae |
| Genus: | Erigeron |
| Species: | E. poliospermus |
| Binomial name | |
| Erigeron poliospermus A.Gray | |
Erigeron poliospermus is a species of flowering plant in the daisy family known by the common names gray-seeded fleabane[1] and purple cushion fleabane.[2] It has been found in British Columbia, Washington, Oregon, and Idaho.[3]
Erigeron poliospermus is a small perennial herb rarely more than 15 centimeters (6 inches) tall, producing a woody taproot. The plant generally produces only 1-3 flower heads per stem. Each head has 15–45 pink, purple, or white ray florets surrounding numerous yellow disc florets. The ray florets are lacking in var. disciformis[1][4][5]
- Varieties
- Erigeron poliospermus var. cereus Cronquist - Washington
- Erigeron poliospermus var. disciformis (Cronquist) G.L.Nesom - Washington, Oregon[6]
- Erigeron poliospermus var. poliospermus - British Columbia, Washington, Idaho, Oregon
References
- 1 2 Flora of North America, Erigeron poliospermus A. Gray 1884.
- ↑ "Erigeron poliospermus". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 29 June 2015.
- ↑ Biota of North America Program 2014 county distribution map
- ↑ Cronquist, A.J. 1994. Asterales. 5: 1–496. In A.J. Cronquist, A. H. Holmgren, N. H. Holmgren, J. L. Reveal & P. K. Holmgren (eds.) Intermountain Flora. Hafner Pub. Co., New York.
- ↑ Scoggan, H. J. 1979. Dicotyledoneae (Loasaceae to Compositae). Part 4. 1117–1711 pp. In Flora of Canada. National Museums of Canada, Ottawa.
- ↑ Nesom, Guy L. 2004. Sida 21(1): 24
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