Cirsium texanum [Asteraceae]

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Scientific Name Cirsium texanum USDA PLANTS Symbol CITE2
Common Name Texas Thistle ITIS Taxonomic Serial No. 36418
Family Asteraceae (Sunflower) Flora of North America Ref. Click Here
Description Habitat: Dry soils in fields, prairies, disturbed and overgrazed areas; common in much of Texas.
Plant: Erect biennial or short-lived perennial; usually solitary, spiny stems often much-branched above; 2 to 5 feet tall.
Leaves: Mid-stem and above alternate, clasping, narrowly-obovate in outline with 3 to 9 spiny-toothed lobes on each edge, hairy beneath and 4 to 12 inches long; larger basal leaves in a rosette.
Inflorescence: Terminal, solitary, very showy lavender flower head 1 to 1-1/2 inches across with many disk florets, no rays; cup-shaped involucre of linear-shaped, recurved phyllaries beneath.
Bloom Period: April to July.
References: "Wildflowers of the Texas Hill Country" by Marshall Enquist, "Wildflowers of Texas" by Geyata Ajilvsgi and "Manual of the Vascular Plants of Texas" by Correll and Johnston.
BONAP Distribution Map

Texas Status:

© Tom Lebsack 2021