Biorepository Data Portal

Plants 20-200 cm. Leaves usually ascending, almost parallel with stems; petioles winged, 1.5-5 mm; blades linear-lanceolate to lance-olate, 2-11 cm, bases acute, margins entire or denticulate (often revolute), apices acute, in-duments: abaxial faces glandular. puberulent and sparsely strigose (sometimes only on veins), adaxial faces glandular and strigose to pilose; stomates on both faces. Heads usually in corymbiform or paniculiform arrays, rarely borne singly. Peduncles 5-45 mm, often ± inflated distally. Calyculi of 5-7 linear to lanceolate or ovate bractlets 5-16 mm. Phyllaries usually 8, linear, 8-14 mm, apices acute. Florets 11-25; corolla tubes 6-9 mm, outer lips 5-8 mm, inner 4-5.5 mm. Cypselae 6-10.5 mm, papilla-like double hairs producing mucilage when wetted; pappi 7.5-12 mm. 2n = 54. Flowering Jan-Nov. Dry, rocky slopes, washes, desert flats, thorn scrub; 200-1600(-2200) m; Ariz., Calif., N.Mex., Tex.; Mexico (Baja California, Baja California Sur, Chihuahua, Coahuila, Durango, Nuevo León, San Luis Potosí, Sinaloa, Sonora, Tamaulipas, Zacatecas).