Three new species of Coffea L. (Rubiaceae) from NE Madagascar Author Davis, Aaron P. Author Rakotonasolo, Franck text Adansonia 2001 3 23 1 137 146 journal article 10.5281/zenodo.4604989 1639-4798 4604989 Key to three new species of Coffea and C. pervilleana 1. Leaf venation on abaxial surface manifest to prominent ............................................................................ 2 1’. Leaf venation on abaxial surface obscure .................................................................................................... 3 2. Leaf apex shortly caudate to caudate; pedicel ± absent, or 0.1-0.5 mm long, bractlets absent; calyx limb shallowly 5-crenate to undulate, NW Madagascar (Island of Nosy Be) .................................. C. pervilleana 2’. Leaf apex acute to ± rounded, rarely very shortly caudate; pedicel always present, 3-5 mm long, bractlets present; calyx limb truncate to slightly undulate; NE Madagascar .................................................. C. littoralis 3. Leaves broadly obovate, broadly elliptic, or ± orbicular; calyx limb with colleters; calyx and disc prominent on fruit (at apex) ................................................................................................................ C. mcphersonii 3’. Leaves obovate or elliptic; calyx limb without colleters; calyx and disc not prominent on fruit (at apex) .............................................................................................................................. C. ratsimamangae 1. Coffea littoralis A.P. Davis & Rakotonas. , sp. nov.