Biology:Cirsium texanum
| Cirsium texanum | |
|---|---|
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Cirsium |
| Species: | C. texanum
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| Binomial name | |
| Cirsium texanum Buckley
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| Synonyms[1] | |
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Cirsium texanum is a species of plant in the tribe Cardueae within the family Asteraceae 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] It grows in prairies and roadsides.[5]
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]
The flowers of Cirsium texanum provide nectar for butterflies and the foliage is used as a source of food for the larvae of the painted lady butterfly. Goldfinches also use the seeds as a food source.[5]
References
- ↑ The Plant List, Cirsium texanum Buckley
- ↑ 2.0 2.1 "Cirsium texanum in Flora of North America @ efloras.org". http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242416296.
- ↑ 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.
- ↑ 5.0 5.1 "Lady Bird Johnson Wildflower Center - The University of Texas at Austin". https://www.wildflower.org/plants/result.php?id_plant=cite2.
External links
Wikidata ☰ Q15596317 entry
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