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1. Thurovia triflora Rose, Contr. U.S. Natl. Herb. 3: 321, plate 15. 1895.
Three-flower snakeweed
Gutierrezia triflora (Rose) M. A. Lane
Leaves ascending-appressed, 2–10(–15) mm, gradually reduced distally. Heads 10–20, borne singly in leaf axils, sessile or subsessile. Disc corollas 2.3–2.8 mm. Cypselae 0.9–1.7 mm; pappi equaling corollas, erose, apiculate. 2n = 10.
Flowering Sep–Nov. Clay soil, less commonly sandy loam, coastal flats and shallow banks, "slick spots" in coastal prairie grasslands, upper margins of ecotone between salty prairies and tidal flats, openings in thickets; of conservation concern; 0–10 m; Tex.
Thurovia triflora is known only from Calhoun, Harris, Jackson, and Matagorda counties on the Gulf coastal plain of southeastern Texas.
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