A new species of Cascabela (Apocynaceae; Rauvolfioideae, Plumerieae) from Michoacán, Mexico Author Alvarado-Cárdenas, Leonardo O. Laboratorio de Plantas Vasculares. Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autónoma de México, Apartado Postal 70 - 399, 04510, Mexico, D. F. Mexico. & Correspondence author: Author Núñez, José Carmen Soto Departamento de Botánica, Instituto de Biología, Universidad Nacional Autónoma de México (UNAM), Apartado Postal 70 - 233, 04510, Mexico, D. F. Mexico. text Phytotaxa 2014 2014-08-29 177 3 163 170 http://dx.doi.org/10.11646/phytotaxa.177.3.4 journal article 10.11646/phytotaxa.177.3.4 1179-3163 5144696 Key of the species of Cascabela 1 Leaves with inconspicuous secondary venation.................................................................................................................................2 - Leaves with conspicuous secondary venation....................................................................................................................................4 2 Leaves obovate to oblanceolate, membranaceous to subleathery, glabrous; flowers greenish-yellow................ Cascabela gaumeri - Leaves filiform, linear to lanceolate, membranaceous, glabrous or sparsely puberulent; flowers yellow or orange ........................3 3 Leaves sessile, linear to filiform, sparsely puberulent on both surfaces; inflorescence peduncles 8–30 mm ...... Cascabela pinifolia - Leaves petiolate, lanceolate to elliptic-lanceolate, glabrous on both surfaces; inflorescence peduncles 3–9 mm .............................. ............................................................................................................................................................................... Cascabela thevetia 4 Leaves obovate to oblanceolate, leathery.................................................................................................................. Cascabela ovata - Leaves linear-lanceolate to elliptic-lanceolate, membranaceous to subcoriaceous............................................................................5 5 Leaves pubescent on both surfaces, lower corolla tube 8–12 mm .................................................................... Cascabela balsaensis - Leaves glabrous adaxially, sparsely tomentulose abaxially, lower corolla tube 20–30 mm . .......................... Cascabela thevetioides