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Deinandra
Scientific Name: Deinandra
Family: Asteraceae
Category: Dicot
Growth:
Duration:
Other Names:
Deinandra: A Genus of California Tarweeds
Deinandra is a genus of plants commonly known as tarweeds, belonging to the daisy (Asteraceae or Compositae) family. While some authorities recognize Deinandra as a distinct genus, others treat its species as members of other genera, such as Hemizonia.
Taxonomy and Nomenclature
- Genus: Deinandra Greene
- Family: Asteraceae (Compositae)
- Kingdom: Angiosperms (Flowering plants)
- Synonyms: Many Deinandra species were formerly classified under the genus Hemizonia. For example:
- Deinandra fasciculata (syn: Hemizonia fasciculata)
- Deinandra mohavensis (syn: Hemizonia mohavensis)
- Deinandra minthornii (syn. Hemizonia minthornii)
- Deinandra clementina (formerly Hemizonia clementina)
- Deinandra corymbosa (formerly Hemizonia corymbosa ssp. macrocephala)
Distribution and Habitat
- Most Deinandra species are native to California.
- Some species, like Deinandra fasciculata, are found outside of California but are generally confined to western North America.
- Deinandra conjugens is found in both California and Baja California.
- A few species, such as Deinandra corymbosa ssp. corymbosa and Deinandra kelloggii, are endemic to California.
- Deinandra species are also found in the California Islands, such as Guadalupe Island, Mexico.
Morphological Characteristics
- Deinandra species are typically annual herbs, although some can be subshrubs.
- They are dicots (Dicotyledoneae).
Ecological Role and Conservation Status
- Several Deinandra species are considered rare or endangered.
- Deinandra paniculata, Deinandra bacigalupii, Deinandra mohavensis, Deinandra conjugens, and San Diego Tarplant are included in the CNPS (California Native Plant Society) Inventory of Rare and Endangered Plants.
- Deinandra mohavensis is believed to be extinct (questionable).
- Deinandra conjugens (Otay tarplant) is a species for which critical habitat areas have been identified.
- Deinandra bacigalupii is listed on list 1B.2 (rare, threatened, or endangered) in the CNPS Inventory.
- Deinandra mohavensis is listed as endangered.
Common Names
- Deinandra fasciculata: Clustered tarweed, Fascicled spikeweed
- Deinandra mohavensis: Mojave tarplant, Mojave tarweed
- Deinandra minthornii: Santa Susana tarplant
- Deinandra clementina: Catalina tarweed
- Deinandra kelloggii: Kellogg's tarweed
- Deinandra pallida: Kern tarweed
- Deinandra bacigalupii: Livermore tarplant
- Deinandra corymbosa: Coastal Tarweed
- Deinandra conjugens: Otay tarplant
Further Information
- USDA PLANTS Database
- CNPS (California Native Plant Society) Inventory of Rare and Endangered Plants
- International Plant Names Index
- GRIN (Germplasm Resources Information Network)
- Discover Life