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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Ordo: Caryophyllales

Familia: Polygonaceae
Subfamilia: Eriogonoideae
Tribus: Eriogoneae
Genus: Chorizanthe
Species: C. angustifolia – C. biloba – C. blakleyi – C. brevicornu – C. breweri – C. clevelandii – C. commisuralis – C. corrugata – C. cuspidata – C. dasyantha – C. densa – C. deserticola – C. diffusa – C. douglasii – C. fasciculata – C. fimbriata – C. flava – C. flavescens – C. frankenioides – C. glabrescens – C. howellii – C. humilis – C. illapelina – C. inequalis – C. interposita – C. intricata – C. kingii – C. leptotheca – C. macraei – C. membranacea – C. mutabilis – C. navasiae – C. obovata – C. orcuttiana – C. palmeri – C. paniculata – C. parryi – C. parviflora – C. pauciflora – C. peduncularis – C. polygonoides – C. procumbens – C. pulchella – C. pungens – C. ramosissima – C. rectispina – C. rigida – C. robusta – C. rosea – C. rosulenta – C. spinosa – C. staticoides – C. stellulata – C. tenuis – C. turbinata – C. umbellata – C. uniaristata – C. vaginata – C. valida – C. ventricosa – C. virgata – C. viridis – C. watsonii – C. wheeleri – C. xanti

Chorizanthe R.Br. ex Benth. London Edinburgh Philos. Mag. & J. Sci. ser. 3, 6: 379. (1835)

Type species: Chorizanthe virgata Benth. Trans. Linn. Soc. London 17: 416 (t. 19, fig. 1). 1836


Brown, R. 1835. London and Edinburgh Philosophical Magazine and Journal of Science. London, ser. 3, 6: 379. Protologue in a later publication (BHL).
International Plant Names Index. 2017. Chorizanthe. Published online. Accessed: Mar. 4 2017.
Reveal, J.L. 2012. On the validation of Chorizanthe and Mucronea (Polygonaceae: Eriogoneae). Phytoneuron 2012-14: 1–2. Full text (PDF). Reference page.
The Plant List 2013. Chorizanthe in The Plant List Version 1.1. Published on the internet. Accessed: 2017 Mar. 4.
Tropicos.org 2017. Chorizanthe. Missouri Botanical Garden. Published on the internet. Accessed: 2017 Mar. 4.
USDA, ARS, Germplasm Resources Information Network. Chorizanthe in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: April 23, 2019.

Vernacular names
English: Spineflowers

Chorizanthe is a genus of plants in the buckwheat family known generally as spineflowers. These are small, squat, herbaceous plants with spiny-looking inflorescences of flowers. The flowers may be in shades of red or yellow to white. The bracts are pointed and sometimes tipped with a hooked awn, and the inflorescence often dries into a rounded, spiny husk. Spineflowers are found in western North America and South America.

Name derivation: The word Chorizanthe comes from the Greek roots chorizo and anthos meaning "to divide," and "flower," thus meaning "divided flowers," but actually used in reference to the divided calyx.

Selected species:

Chorizanthe angustifolia - narrowleaf spineflower
Chorizanthe biloba - twolobe spineflower
Chorizanthe blakleyi - Blakley's spineflower
Chorizanthe brevicornu - brittle spineflower
Chorizanthe breweri - San Luis Obispo spineflower
Chorizanthe corrugata - wrinkled spineflower
Chorizanthe cuspidata - San Francisco spineflower
Chorizanthe diffusa - diffuse spineflower
Chorizanthe douglasii - San Benito spineflower
Chorizanthe fimbriata - fringed spineflower
Chorizanthe howellii - Mendocino spineflower
Chorizanthe leptotheca - Ramona spineflower
Chorizanthe membranacea - pink spineflower
Chorizanthe obovata - spoonsepal spineflower
Chorizanthe orcuttiana - San Diego spineflower
Chorizanthe palmeri - Palmer's spineflower
Chorizanthe parryi - San Bernardino spineflower
Chorizanthe polygonoides - knotweed spineflower
Chorizanthe procumbens - prostrate spineflower
Chorizanthe pungens - Monterey spineflower
Chorizanthe rectispina - prickly spineflower
Chorizanthe rigida - devil's spineflower, rigid spineflower
Chorizanthe robusta - robust spineflower
Chorizanthe spinosa - Mojave spineflower
Chorizanthe staticoides - Turkish rugging
Chorizanthe stellulata - starlet spineflower
Chorizanthe uniaristata - one-awned spineflower
Chorizanthe valida - Sonoma spineflower
Chorizanthe ventricosa - Priest Valley spineflower
Chorizanthe watsonii - fivetooth spineflower
Chorizanthe wheeleri - Santa Barbara spineflower
Chorizanthe xanti - Riverside spineflower

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