Deinandra arida
| Deinandra arida | |
|---|---|
| Scientific classification | |
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| (unranked): | |
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| Species: | D. arida
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| Binomial name | |
| Deiandra arida (D.D.Keck) B.G.Baldwin
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| Synonyms[1] | |
|
Hemizonia arida D.D.Keck | |
Deiandra arida (formerly Hemizonia arida),[2] also called Red Rock tarplant, is a rare California annual plant in the (sunflower family).[3]
Habitat and range
Deiandra arida occurs on clay and volcanic soils and in desert dry wash from 1,000-3,000 feet (300-900 m) in elevation.[3] It is known from only 10 sites in the Red Rock Canyon State Park area of the Mojave Desert in Kern County, California.[3][4][5]
Growth pattern
It is a branched annual growing from 1' to 3' (30-90 cm) tall.[3]
Leaves and stems
Lower leaves are inversely lanceolate and hairless, with toothed margins.[3] Upper leaves are without teeth (entire) at the outside edge, and are covered in sparse, short, stiff hairs, giving it a bristly feel.[3]
Flowers and fruits
Flower heads grow in flat-topped clusters at the tops of stems.[3] Flower heads have 18-25 yellow disk flowers, with 5-10 yellow ray flowers. Bristly phyllaries halfway enclose the akenes.[3]
References
- ^ 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.
External links
- Calflora Database: Deinandra arida (Red rock tarplant)
- Jepson eFlora (TJM2) treatment of Deinandra arida
- Missouri Botanical Garden Herbarium specimen photo, isotype of Hemizonia arida/Deinandra arida
- Deinandra arida in the CalPhotos photo database, University of California, Berkeley