Tetracoccus

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids I
Ordo: Malpighiales

Familia: Picrodendraceae
Tribus: Podocalyceae
Genus: Tetracoccus
Species: T. capensis – T. dioicus – T. fasciculatus – T. hallii – T. ilicifolius
Name

Tetracoccus Engelm. ex Parry, W. Amer. Sci. 1(3): 13. (1885)

Type species: Tetracoccus dioicus Parry, W. Amer. Sci. 1(3): 13. (1885)

Synonyms

Heterotypic
Halliophytum I.M.Johnst., Contr. Gray Herb. 68: 88. (1923)

Homonyms

Tetracoccus (Bacteria)
Tetracoccus W.West & J.Roy, 1892, nom. illeg. (Chlorophyta)

References
Primary references

Engelmann, G. 1885. West American Scientist 1(3): 13.

Links

Hassler, M. 2020. Tetracoccus. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2020. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2020 Apr. 08. Reference page.
International Plant Names Index. 2020. Tetracoccus. Published online. Accessed: Apr. 08 2020.
Govaerts, R. et al. 2020. Tetracoccus in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2020 Apr. 08. Reference page.
Tropicos.org 2020. Tetracoccus. Missouri Botanical Garden. Published on the internet. Accessed: 2020 Apr. 08.

Vernacular names
English: Shrubby-spurge

Tetracoccus is a plant genus under the family Picrodendraceae. Shrubby-spurge is a common name for plants in this genus. They are dioecious, often hairy shrubs.[2]

It was first described in 1885 by Charles Christopher Parry.[3][4] Its name means, from Greek "four seed" (tetra meaning "four" and kokkos, "kernel, grain").

Distribution

The genus is native to the southwestern United States and northern Mexico, with species in desert or chaparral habitats.[1][5][6][7][8]
Species

Species include:[1]

Tetracoccus capensis (I.M.Johnst.) Croizat — endemic to Baja California Sur state (México).[9]
Tetracoccus dioicus Parry — endemic to the Peninsular Ranges in northwestern Baja California state (México); and southern California (U.S.) within San Diego, Orange, and Riverside Counties.
Tetracoccus fasciculatus (S.Watson) Croizat — Mexico (Chihuahua, Durango, Nuevo León, and Puebla states).
Tetracoccus hallii Brandegee — Mojave Desert and Sonoran Desert in California, Nevada, and Arizona (U.S.), and Baja California state (México). Sometimes treated as a variety under T. fasciculatus.
Tetracoccus ilicifolius Coville & Gilman — endemic to Death Valley National Park, in the Mojave Desert and eastern Inyo County, California.

See also

Taxonomy of the Picrodendraceae

References

Kew World Checklist of Selected Plant Families
"Tetracoccus in Flora of North America @ efloras.org". www.efloras.org. Retrieved 2021-08-26.
Parry, Charles Christopher. 1885. West American Scientist 1(3): 13–14
Tropicos
Biota of North America Program 2013 county distribution maps
Govaerts, R., Frodin, D.G. & Radcliffe-Smith, A. (2000). World Checklist and Bibliography of Euphorbiaceae (and Pandaceae) 1-4: 1-1622. The Board of Trustees of the Royal Botanic Gardens, Kew.
Martínez Gordillo, M., J. J. Ramírez, R. C. Durán, E. J. Arriaga, R. García, A. Cervantes & R. M. Hernández. 2002. Los géneros de la familia Euphorbiaceae en México. Anales del Instituto de Biología de la Universidad Nacional Autónoma de México, Botánica 73(2): 155–281.
"Tetracoccus". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 8 December 2015.
Tropicos.org: Tetracoccus capensis