Facelis retusa
| Facelis retusa | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Asteroideae |
| Tribe: | Gnaphalieae |
| Genus: | Facelis |
| Binomial name | |
| Facelis retusa (Lam.) Sch.Bip. | |
| Synonyms[1] | |
| |
Facelis retusa (annual trampweed)[2] is a South American species flowering plants in the sunflower family. It is native Brazil, Bolivia, Paraguay, Uruguay, northern Argentina, Chile; naturalized in parts of Africa,[3] Australia, and North America including the southeastern and south-central United States, and considered as a noxious weed in some of those places.[4][5][6][7]
Facelis retusa is an annual herb with the stems up to 30 cm (1-foot) long, very often trailing along the surface of the ground. Leaves are crowded along the stem, each up to 3 cm (1 in) long. Flower heads are in clusters, with white or purple disc flowers but no ray flowers. The achene has several long, feathery bristles that give a white appearance and assure effective seed dispersal.[8]
References
- ↑ The Plant List, Facelis retusa (Lam.) Sch.Bip.
- ↑ "Facelis retusai". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 14 July 2015.
- ↑ Gibbs Russell, G. E., W. G. M. Welman, E. Retief, K. L. Immelman, G. Germishuizen, B. J. Pienaar, M. Van Wyk & A. Nicholas. 1987. List of species of southern African plants. Memoirs of the Botanical Survey of South Africa 2(1–2): 1–152(pt. 1), 1–270(pt. 2).
- ↑ Biota of North America Program 2014 county distribution map
- ↑ Frank M. Watson, University of Georgia, College of Agricultural and Environmental Sciences, Weed covers turfgrass with snowy appearance
- ↑ Tropicos, Facelis retusa (Lam.) Sch. Bip.
- ↑ Atlas of Living Australia
- ↑ Flora of North America, Facelis Cassini, 1819.
External links
- TurfFiles - North Carolina State University photos, description on weed control methods
- Southeastern Flora several photos
- Alabama Plants photo