Smallanthus

Perennials [annuals, shrubs], 100-300[1200+] cm. Stems erect. Leaves cauline; opposite; petiolate (petioles usually winged) [sessile]; blades mostly deltate to ovate, usually ± palmately lobed, ultimate margins dentate to denticulate, faces hirtellous, pilosulous, or puberulent, gland-dotted (at least abaxially). Heads radiate, borne singly or (2-5) in crowded, corymbiform arrays. Involucres hemispheric, 8-15 mm diam. Phyllaries persistent, 12-13[-25+] in 2 series (outer 4-6 ovate to lanceolate [orbiculate], herbaceous, inner as many as rays, more membranous to scarious, narrower and shorter). Receptacles flat to convex, paleate (paleae obovate to spatulate, scarious). Ray florets 7-13[-25+], pistillate, fertile; corollas yellow [white or orange] (tubes hairy, laminae linear to elliptic [ovate]). Disc florets [20-]40-80[-150+], functionally staminate; corollas yellow [orange], tubes shorter than abruptly campanulate [funnelform] throats, lobes 5, deltate. Cypselae (obliquely inserted on receptacles, each shed separate from subtending phyllary) obovoid [quadrangular], somewhat compressed, finely 30-40-ribbed or -striate (not narrowed at bases, not apically beaked); pappi 0 (cypselae sometimes hairy at apices). x = 16.