Robinsonella Rose & Baker f.
Contenido
Descripción
Trees or shrubs with stellate or lepidote pubescence, sometimes also with long simple hairs, sometimes glabrate. Leaves petiolate, the blades cordate, elliptic or ovate to palmately lobed, dentate to subentire, acute or acuminate, lacking foliar nectaries; stipules filiform, caducous. Flowers fragrant, borne in open axillary panicles or in condensed axillary racemes (sometimes appearing fasciculate), the pedicels often paired; involucel absent; calyx deeply 5-lobed, ecostate, valvate in bud; petals lavender, white, or yellowish, sometimes with purple veins or a dark spot on claw; androecium usually pallid, included, antheriferous at apex; styles 7-30, the stigmas capitate. Fruits schizocarpic; mericarps 7-30, elongated, inflated (or the lateral walls connate about the solitary seed), thin-walled, unornamented, indehiscent, often divergent; seeds solitary, sparsely and minutely pubescent. Base chromosome number: x = 16.A
Discusión taxonómica
Robinsonella is a genus of sixteen arborescent species from Mexico and Central America, of which fourteen may be found in Mexico. It was divided into three sections by Fryxell (1973a), but sect. Mirandella cannot be supported and is here considered a synonym of sect. Robinsonella. A