Helianthella californica

Plants 15-60 cm. Cauline leaves: (nearly all opposite or mostly alternate) largest proximal to mid stems; blades ± 3-nerved, lance-ovate or oblong-lanceolate to lanceolate or linear, 5-26 cm, faces ± hirsutulous to scaberulous or glabrescent. Heads usually borne singly, sometimes 2-3+, erect. Involucres hemispheric, 15-25 mm diam. Phyllaries lanceolate (sometimes outer 2-3 foliaceous; margins usually ciliate, abaxial faces densely hairy or glabrate). Paleae chartaceous, relatively firm. Ray florets (10-)12-16; laminae 15-20+ mm. Disc corollas yellow. Cypselae strongly compressed, obovate-cuneate to oblong (winged or almost wingless, margins ciliate, apices deeply notched, faces glabrous); pappi 0 or 2 ± subulate scales plus 0-4 shorter scales.