Kosteletzkya C. Presl
Contenido
Descripción
Stout erect herbs or subshrubs, often with hispid vesture, frequently growing in moist habitats. Leaves petiolate, the blades narrowly lanceolate, ovate, cordate, hastate, aceriform, or sagittately parted, with serrate margins, usually coarsely stellate-pubescent, sometimes also with long simple hairs, lacking foliar nectaries; stipules subulate to filiform. Flowers solitary in the leaf axils or aggregated into terminal panicles or racemes; involucel much shorter than to equaling the calyx, of 6-10 linear bracts, usually hispid; calyx deeply 5-lobed; corolla rotate or tubular, whitish, yellow, or pink; androecium equaling petals or (in tubular-flowered species) clearly exserted, apically 5-dentate; styles 5, exceeding androecium, free distally, the stigmas capitate. Capsules depressed, S-angled or -winged, usually scabrid, often transversely rugose or striate, loculicidally dehiscent, the 5 locules each 1-seeded; seeds reniform, glabrous to minutely scabridulous. Base chromosome number: x = 19.A
Discusión taxonómica
Kosteletzkya is a genus of seventeen species, occurring in the New World in North, Central, and South America, and in the Old World from Africa and Madagascar to Europe and Malesia. Its principal diversification is in Mexico (eight species) and in Africa (eight species).A