Tropicos | Name - Zexmenia La Llave

Zexmenia La Llave

Flora Data (Last Modified On 6/17/2013)

Genus	Zexmenia La Llave
PlaceOfPublication	La Llave & Lexarza, Nov. Veg. Descr. 1: 13. 1824.
Note	TYPE: Z. serrata La Llave.
Description	Herbs or widely branched shrubs, sometimes scrambling; stems slender, pubescent. Leaves opposite, ovate or lanceolate, entire or denticulate, often pinnately veined, pubescent, sometimes coriaceous; petioles pubescent, canalic- ulate above. Inflorescence an open panicle, sometimes cymose; bracts or bracteoles sometimes alternate. Heads radiate; involucral bracts in several series, the outer- most narrower, the inner series ovate, basally indurate; paleas scarious, enfolding the florets; ray corollas mostly yellow, the, limb narrow, denticulate, the ovary fertile, 3-angulate, 3-awned; disc corollas tubular, 5-merous, the lobes short, porrect, dorsally pubescent, the anthers appendaged, basally subauriculate, the ovary fertile, laterally flattened, apically winged, two awns departing centrifugally from near the center of the apex, then bending upwards, a small squamellate pappus sometimes present. Achenes dark, glabrous, apically winged, with two stout awns arising from near the center of the summit, bending first outwards and then upwards; pappus of small scales sometimes present between the awns.
Habit	Herbs or widely branched shrubs
Distribution	Zexmenia includes 3-4 species of Central America
Note	closely related to species of Wedelia and Oyedaea. Only one species occurs in Panama.