Deinandra conjugens
| Deinandra conjugens | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Deinandra |
| Species: | D. conjugens
|
| Binomial name | |
| Deinandra conjugens | |
| Synonyms[2] | |
|
Hemizonia conjugens D.D.Keck | |
Deinandra conjugens (
Deinandra conjugens is threatened by habitat destruction and degradation.[4] It was federally listed as a threatened species in 1998.[1]
Description
Deinandra conjugens is an annual herb growing up to about 0.5 metres (1.6 ft) in height with a solid, bristly, gland-dotted stem. The lower leaves are hairy and lobed or toothed, and measure up to about 4.5 centimeters long.[5]
The
The fruit is an
Distribution
Deinandra conjugens grows in clay soils in several types of habitat, including grassland and maritime and inland coastal sage scrub.[4] It tolerates some disturbance in its habitat, and low levels of grazing and road maintenance activities such as mowing are probably beneficial.[4][1]
Most of the known occurrences of Deinandra conjugens are in
Conservation
The region in which the plant lives is heavily impacted by development and other processes and exists now in a fragmented state. 70% of the plant's habitat within its range has been destroyed. Much of the territory previously threatened by development has been conserved within a number of nature reserves. Many are protected under a San Diego county ordinance. The San Diego National Wildlife Refuge created the Otay Tarplant Preserve, and Caltrans reserved a section of land for the plant near a busy highway.[4] While many California populations are now protected, there are still many that are in danger of destruction. The status and distribution of this plant within Mexico are unknown.[4]
Besides outright habitat destruction, the plant is affected by several processes of habitat degradation.
References
- ^ a b c d Deinandra conjugens. The Nature Conservancy.
- ^ The Plant List, Deinandra conjugens (D.D.Keck) B.G.Baldwin
- ^ Calflora taxon report, University of California, Deinandra conjugens (Keck) B.G. Baldwin, Otay tarplant
- ^ a b c d e f g h USFWS. Deinandra conjugens Five-year Review. June 2009.
- ^ a b c Deinandra conjugens. Flora of North America.
- ^ Hemizonia conjugens. Jepson Manual.
- ^ a b c Deinandra conjugens (Otay Tarplant). City of San Diego Rare Plant Monitoring Report, 2005.
External links
Media related to Deinandra conjugens at Wikimedia Commons- Jepson eFlora (TJM2) treatment of Deinandra conjugens
- Jepson Manual (TJM93), archived: Hemizonia conjugens
- United States Department of Agriculture Plants Profile - Deinandra conjugens (Otay tarweed)
- Deinandra conjugens — Calphotos Photos Gallery, University of California
