Chaptalia nutans(Linnaeus) Polakowski var. texana (Greene) Burkart [family COMPOSITAE]
Treatment Author(s)
Guy L. Nesom
Information
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.
Phenology
mar-may (spring), jun (summer)
Altitude range
200–1500 m;
Distribution
Mexico (Chihuahua).Mexico (Coahuila).Mexico (Nuevo León).Mexico (San Luis Potosí).Mexico (Tamaulipas).Mexico (and others).USA N.Mex.USA Tex.
