Cirsium texanum

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Scientific Name Cirsium texanum USDA PLANTS Symbol
Common Name Texas Thistle ITIS Taxonomic Serial No.
Family Asteraceae (Sunflower)
Flora of North America Ref.
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.
Texas Status

© Tom Lebsack 2019