Chionanthus megistocarpus (Oleaceae), a new species from the Western Cordillera of Colombia Author Fernández-Alonso, José Luis Real Jardín Botánico-CSIC, Departamento de Biodiversidad y Conservación, c / Claudio Moyano 1, 28014 Madrid, España. Author Cogollo-Pacheco, Álvaro Alfonso text Phytotaxa 2016 2016-07-29 269 1 14 20 http://dx.doi.org/10.11646/phytotaxa.269.1.2 journal article 10.11646/phytotaxa.269.1.2 1179-3163 13650840 Key to separate Chionanthus megistocarpus from morphologically similar species in the north of South America. 1 . Deciduous trees, flowers with pink or purple petals, 15–25 mm long. Plants growing in Inter-Andean dry forest ........................... ............................................................................................................................................................................ C. pubescens Kunth - Evergreen trees, flowers with white petals, rarely pale lilac, less than 15 mm long. Plants growing in tropical wet, gallery forest, moist forest, Subandean cloud forest..................................................................................................................................................2 2. Leaves coriaceous, elliptical or elliptical-oblanceolate, fruit 30–50 mm long ................................................................................ 3 - Leaves not coriaceous and elliptical or elliptical-oblanceolate, fruit shorter than 30 mm long........................................................... ....................................................................................................................................... (Other species of north of South América). 3. Petiole 6–18(–20) mm long, blades with domatia in the veins of the lower surface; axillary inflorescences 5–10 cm long, corolla 13–17 mm long; mature fruit subglobose, 30–40 × 25–30 mm , black when mature (moist forest, c. 600 m , western Ecuador ) ...... ........................................................................................................................................... C. colonchensis X.Cornejo & C.Bonifaz - Petiole (12–)15–30(–35) mm long, blades without domatia on the lower surface; axillary inflorescences 8–16(–20) cm long, corolla less than 10 mm long; mature fruit ellipsoid 45–50 × 42–47 mm , purple when mature (Subandean forest 1700–2100 m , western Colombia ............................................................................................................ C. megistocarpus Fern.Alonso & Cogollo