27. Horsfordia A. Gray, Proc. Amer. Acad. Arts. 22: 296. 1887. [For Frederick Hinsdale Horsford, 1855–1923, Vermont farmer and commercial seedsman, and probably also for Eben Norton Horsford, 1818–1893, chemist].
John La Duke
[Herbs] shrubs, hairy. Stems erect, stellate-tomentose or stellate-scabrous. Leaves petiolate to sessile distally; stipules deciduous, linear to subulate; blade ovate to triangular or lanceolate to cordate, unlobed, base cordate or truncate, margins entire, crenate, dentate, or denticulate, surfaces densely covered with short, stellate hairs, especially abaxially. Inflorescences axillary, solitary flowers or paniculate; involucel absent. Flowers: calyx not accrescent, not inflated, shorter than mature fruits, lobes not ribbed, lanceolate; corolla campanulate, yellow, orange, rose, pink, or lavender [white], often drying bluish, 2–3 times calyx; staminal column included, anthers at apex; ovules 1 per cell, 1–3 per carpel; styles 6–11-branched; stigmas capitate. Fruits schizocarps, sometimes on reflexed, jointed pedicel, spheric to subspheric, indurate; mericarps Species 4 (2 in flora): sw United States, nw Mexico.
[6–]9 or 10[or 11], ± 2-celled, winged, flared at papery apex, lower cell rugose, stellate-hairy, sparsely hirsute, indehiscent, endoglossum absent, upper cell smooth, dehiscent apically. Seeds 1 in rugose portion, 1 or 2 apically, sometimes abortive, glabrous or minutely hairy. x = 15.
