bio.wikisort.org - Plant

Deiandra arida (formerly Hemizonia arida),[3] also called Red Rock tarplant, is a rare California annual plant in the family Asteraceae.[4]

Deinandra arida
Conservation status
Critically Imperiled  (NatureServe)[1]
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

Deiandra 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

It is a branched annual growing from 1' to 3' (30–90 cm) tall.[4]

Leaves and stems

Lower 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

Flower 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

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

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