Deiandra arida (formerly Hemizonia arida),[3] also called Red Rock tarplant, is a rare California annual plant in the family Asteraceae.[4]
| Deinandra arida | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Deinandra |
| Species: | D. arida
|
| Binomial name | |
| Deinandra arida (D.D.Keck) B.G.Baldwin
| |
| Synonyms[2] | |
|
Hemizonia arida D.D.Keck | |
Habitat and range
editDeiandra arida occurs on clay and volcanic soils and in desert dry wash from 1,000-3,000 feet (300–900 m) in elevation.[4] It is known from only 10 sites in the Red Rock Canyon State Park area of the Mojave Desert in Kern County, California.[4][5][6]
Growth pattern
editIt is a branched annual growing from 1' to 3' (30–90 cm) tall.[4]
Leaves and stems
editLower leaves are inversely lanceolate and hairless, with toothed margins.[4] Upper leaves are without teeth (entire) at the outside edge, and are covered in sparse, short, stiff hairs, giving it a bristly feel.[4]
Flowers and fruits
editFlower heads grow in flat-topped clusters at the tops of stems.[4] Flower heads have 18-25 yellow disk flowers, with 5-10 yellow ray flowers. Bristly phyllaries halfway enclose the akenes.[4]
References
edit- ^ "NatureServe Explorer 2.0".
- ^ Tropicos, Hemizonia arida D.D. Keck
- ^ Mojave Desert Wildflowers, Pam MacKay, 2nd Ed. 2013, p. 314
- ^ a b c d e f g h Mojave Desert Wildflowers, Pam MacKay, 2nd Ed. 2013, p. 189
- ^ Calflora taxon report, University of California, Deinandra arida (Keck) B.G. Baldwin Red Rock tarplant
- ^ Flora of North America, Deinandra arida (D. D. Keck) B. G. Baldwin, Novon. 9: 467. 1999.