20-120+ cm (caudices woody). Stems
strigose or puberulent to glabrate. Leaves
opposite or alternate; blades elliptic, lance-linear, lance-ovate, linear, or ovate, 10-90 × 2-28 mm, margins ciliate to 1
/4 their lengths, hairs mostly less than 0.5 mm, faces strigose, abaxial often gland-dotted. Heads
1-15 cm, lengths 1
/2 leafy portions of stems. Involucres
6-14 mm diam. Phyllaries
4-8 mm. Paleae
oblong, 5-6 mm, cuspidate. Ray florets
5-14; laminae oval to oblong, 7-20 mm (gland-dotted along veins and abaxially). Disc florets
50+; corollas 3-4 mm. Cypselae
black or gray-striate, 1.2-3 mm. Heliomeris multiflora
most frequently occurs in montane habitats. It produces a branched, woody caudex with adventitious buds, even in the first growing season. From the aerial parts of the plant there is little to distinguish it from H. longifolia
, although it tends to have longer peduncles and broader leaves.
Varieties 3 (3 in the flora): sw United States, Mexico.