American threefold
Trixis californica
Summary 9
Trixis californica , the American threefold or American trixis, is a species of flowering plant in the family Asteraceae. It is native to the southwestern United States in California, Arizona, New Mexico, and Texas, and in Mexico in the states of Baja California, Chihuahua, Coahuila, Durango, Nuevo León, Sinaloa, Sonora, Tamaulipas, and Zacatecas.
Description 10
Trixis californica is a sprawling shrub or subshrub with flower heads with about 15 bright yellow flowers each. The inflorescence is terminal, usually a panicle or corymb, but sometimes the heads are borne singly at the tips of branches. Leaves are lance-shaped (lanceolate), dark green, 2–11 cm long, and 0.5–3 cm wide. This species occurs from sea level to 5000 feet in elevation. Its habitat types include rocky hillsides, thorn scrub, and desert washes and brush. In the western Sonoran Desert it is exclusive to washes and only grows amongst other plants. In the Colorado Desert it grows in creosote scrub. It grows in scrub in the Yuma Desert, east of the Colorado River. Though it usually flowers between February and October, it may bloom nearly year-round depending on winter weather conditions.
Sources and Credits
- (c) Joe Decruyenaere, some rights reserved (CC BY-SA), http://www.flickr.com/photos/38213125@N00/4510714091
- (c) Ken-ichi Ueda, some rights reserved (CC BY), uploaded by Ken-ichi Ueda
- (c) Tony Iwane, some rights reserved (CC BY-NC), uploaded by Tony Iwane
- (c) Katja Schulz, some rights reserved (CC BY), https://www.flickr.com/photos/treegrow/25288478213/
- (c) Katja Schulz, some rights reserved (CC BY), https://www.flickr.com/photos/treegrow/25796414552/
- (c) Katja Schulz, some rights reserved (CC BY), https://www.flickr.com/photos/treegrow/25796411832/
- (c) BJ Stacey, some rights reserved (CC BY-NC), uploaded by BJ Stacey
- (c) Bob Miller, some rights reserved (CC BY), uploaded by Bob Miller
- Adapted by Jeny Davis from a work by (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Trixis_californica
- (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Trixis_californica
More Info
- iNat taxon page
- Biodiversity Heritage Library
- BOLD Systems BIN search
- Calflora
- CalPhotos
- eFloras.org
- Flora of North America (beta)
- Global Biodiversity Information Facility (GBIF)
- HOSTS - a Database of the World's Lepidopteran Hostplants
- IPNI (with links to POWO, WFO, and BHL)
- Jepson eFlora
- NatureServe Explorer 2.0
- SEINet Symbiota portals
- Tropicos
- USDA PLANTS database
- World Flora Online
