Smallanthus
Man. S.E. Fl., 1406, 1509. 1933.
| Taxon | Illustrator ⠉ | |
|---|---|---|
 | Chorisiva nevadensis Smallanthus uvedalia Melampodium leucanthum | Yevonn Wilson-Ramsey Bee F. Gunn Yevonn Wilson-Ramsey |
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, glanddotted (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.
Distribution
United States, Mexico, South America
Discussion
Species ca. 20 (1 in the flora).