Habit: Perennial herb, scapose; taprooted, root caudex-like, rhizomes present or 0.
Leaf: simple, in basal rosette, minute- to short-hairy or sometimes glabrous in age, glandular-hairy or not; blade tapered to petiole or leaf sessile, linear-lanceolate to ovate, oblanceolate or elliptic, entire; petiole tapered to blade.
Inflorescence: axillary from stem base, flowers 1 (few-flowered cyme in well-established plants); peduncle 2--5 cm, +- ascending to +- erect in flower, to 10+ cm, spreading in fruit, short- to long-hairy or glabrous in age.
Flower: calyx lobes unequal in size and shape, enlarged in fruit, outer (2)3 broad, inner 2(3) narrow; corolla rotate or bell-shaped, throat yellow or white, lobes white to lavender, generally marked purple; corolla scales 0 or reduced; nectary glands 0; stamens included, unequal to +- equal, attached at 1 level, filaments widened at base, not appendaged, not winged; ovary chamber appearing 1, style 1, included or +- exserted, shallowly 2-lobed.
Fruit: 5--11 mm, ovoid, hairy.
Seed: 20--40, ovoid, angled, dark- or red-brown, honeycombed or pitted; attached fleshy structure 0.
Species In Genus: 2 species: western United States, northern Mexico.
Etymology: Greek: evening or western centaur
Jepson eFlora Author: Genevieve K. Walden, Robert W. Patterson & Richard R. Halse
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)Key to Hesperochiron
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