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FNA | Family List | FNA Vol. 19, 20 and 21 | Asteraceae | Chaptalia

2. Chaptalia texana Greene, Leafl. Bot. Observ. Crit. 1: 191. 1906.


Chaptalia nutans (Linnaeus) Polakowski var. texana (Greene) Burkart

Leaves petiolate (petioles 1/8–1/3 lengths of blades); blades obovate to ovate or elliptic or sublyrate, 3–21 cm, margins lobed to denticulate, abaxial faces thinly gray-tomentose, adaxial faces green-glabrate. Heads nodding in bud and fruit, erect in flowering. Peduncles ebracteate or bracts 1–2, 13–34 cm at flowering, 16–46 cm in fruit, not dilated distally. Florets: outer pistillate, corollas evenly cream colored, turning crimson, laminae 0.2–0.8 mm wide; inner florets bisexual, fertile. Cypselae 11.5–13 mm, beaks filiform, lengths 1–1.6 times bodies, faces sparsely to moderately papillate (bodies and beaks). 2n = 24.

Flowering Mar–Jun. Slopes in thin, rocky (limestone) soils, usually in woods with abundant oaks; 200–1500 m; N.Mex., Tex.; Mexico (Chihuahua, Coahuila, Nuevo León, San Luis Potosí, Tamaulipas, and others).


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