Cirsium texanum

Cirsium texanum
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Cirsium
Species:	C. texanum
Binomial name
	Cirsium texanum; Buckley
Synonyms
	Carduus austrinus Small; Carduus filipendulus (A.Gray) Rydb.; Carduus helleri Small; Cirsium austrinum (Small) E.D.Schulz; Cirsium helleri (Small) Cory;

Cirsium texanum is a species of plants in the thistle tribe within the sunflower family found in North America. Common names include Texas thistle, Texas purple thistle or southern thistle.^[2] The species is native to northern Mexico (Coahuila, Durango, Nuevo León, San Luis Potosí, Tamaulipas) and the southern Great Plains of the south-central United States (primarily Texas, Oklahoma, and eastern New Mexico with additional populations in Louisiana, Arkansas, and Missouri).^[3]^[4]

Cirsium texanum is a biennial or perennial herb up to 80 cm (32 inches) tall. Leaves have small, narrow spines along the edges. Flower heads are sometimes produced one at a time, sometimes in small groups, each head with light purple disc florets but no ray florets.^[2]

References[]

^ The Plant List, Cirsium texanum Buckley
^ ^a ^b Flora of North America, Texas or Texas purple or southern thistle, Cirsium texanum Buckley
^ Biota of North America Program 2014 county distribution map
^ CONABIO. 2009. Catálogo taxonómico de especies de México. 1. In Capital Nat. México. CONABIO, México D.F..

External links[]

Photo of herbarium specimen at Missouri Botanical Garden, collected in Coahuila

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[1] The Plant List, Cirsium texanum Buckley

[lisamarie-2] Flora of North America, Texas or Texas purple or southern thistle, Cirsium texanum Buckley

[3] Biota of North America Program 2014 county distribution map

[4] CONABIO. 2009. Catálogo taxonómico de especies de México. 1. In Capital Nat. México. CONABIO, México D.F..

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