Perityle microglossa var. saxosa (Brandeg.) Powell

Perityle saxosa Brand. Zoe 5: 225. 1905
Galinsogeopsis spilanthoides Schultz-Bip. in Seem. Bot. Voy. Herald 307, in part. 1856.
Perennial with many stems, 4-5 dm. high, puberulent; leaves opposite; petioles 1-2 cm.
long; blades thin, elongate-deltoid, acuminate, coarsely dentate, truncate at the base, 2-5 cm.
long, grayish-puberulent; heads cymose-paniculate ; peduncles 2-6 cm. long; involucre 4 mm.
high, 5 mm. broad; bracts oblanceolate, puberulent, acute; ligules white, 2-3 mm. long,
1-1.5 mm. broad; disk-flowers 1 mm. long; tube about equaling the campanulate throat;
achenes pubescent, short-ciliate on the mostly callous margins, 2 mm. long; pappus of a short
crown of fimbriate squamellae and usually two unequal awns, the longer half as long as the
achene, the other much shorter, or ,the latter or both wanting.
Type locality: Cerro Colorado, Sinaloa. Distribution: Sinaloa.