Diospyros
Creators: name: Schatz, George E.
name: Lowry Ii, Porter P.
name: Phillipson, Peter B.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Ericales
Ebenaceae
Diospyros

description: Key to the species of the Bernieriana group of Diospyros
1. Leaf margins distinctly undulate ................................. 2
1a. Leaf margins flat or revolute, not distinctly undulate (weakly undulate in fresh material of D. hongwae) ...... 3
2. Apex of fruit completely enclosed within the calyx; fruit spherical; N and NE Madagascar and the Comoro islands (Anjouan, Grande Comore, Mayotte and Moheli) ......... ............................................................ 1. D. bernieriana
2a. Apex of fruit exserted above the calyx; fruit ellipsoid; Zombitsy, Tsihombe .................................... 5. D. silicea
3. Leaf blade with margins flat or slightly revolute, abaxial surface not at all obscured ........................................... 4
3a. Leaf blade with margins strongly revolute, obscuring much of the abaxial surface on at least some leaves ..... 5
4. Largest leaf blade 2–4(–5) cm long; apex of fruit enclosed within the calyx; free portion of calyx tubular; western forest, Bongolava to Kirindy .................... 7. D. torquata
4a. Largest leaf blade 11–12 cm long; apex of fruit exserted above the calyx; free portion of calyx cupuliform; Behefaka, Irarona (S of Ambilobe) ................. 3. D. hongwae
5. Leaves elliptic to obovate, broadest blade less than 3 times longer than wide, glabrous or initially with white farinose indument on the abaxial surface, glabrescent; accrescent portion of fruiting calyx entire; Antsiranana area S to Daraina ................................................ 6. D. suarezensis
5a. Leaves narrowly elliptic or narrowly oblong to linear, occasionally narrowly obovate, broadest blade at least (3–)4 –8 times longer than wide, with rufous farinose indument on abaxial surface and sometimes adaxial surface, rarely glabrous; accrescent portion of fruiting calyx distinctly lobed ................................................... 6
6. Female flowers narrowly ellipsoid, 11–15 mm long, at least 2 times longer than wide; mature fruit 12–16 × 7–10 mm, the lobes the of calyx 6–8 mm long; far N of Madagascar ....... .............................................................. 4. D. ranirisonii
6a. Female flowers ellipsoid to subspherical, 5–10 mm long, only slightly longer than wide; mature fruit 10–13 × 6 mm, the lobes of the calyx 3 mm long; central and southern Madagascar ......................................... 2. D. danguyana
Clé d’identification des espèces de Diospyros du groupe Bernieriana
1. Marges des feuilles distinctement ondulées ................. 2
1a. Marges des feuilles planes ou révolutées, pas distinctement ondulées (légèrement ondulées en matériel frais de D. hongwae) ................................................................. 3
2. Apex du fruit complètement entouré par le calice; fruit sphérique; N et NE de Madagascar et des Îles Comores (Anjouan, Grande Comore, Mayotte et Mohéli) ............ ............................................................ 1. D. bernieriana
2a. Apex du fruit prolongé au-delà du calice; fruit ellipsoïde; Zombitsy, Tsihombe .................................... 5. D. silicea
3. Limbe foliaire plane ou à marges légèrement revolutées, surface abaxiale visible ................................................. 4
3a. Limbe foliaire fortement révoluté, cachant beaucoup de la surface abaxiale sur au moins certaines feuilles ........ 5
4. Limbe de la feuille la plus grande mesurant 2–4(–5) cm de long; apex du fruit entouré par le calice; partie libre du calice tubulaire; forêts occidentales, Bongolava à Kirindy ................................................................. 7. D. torquata
4a. Limbe de la feuille la plus grande mesurant 11 –12 cm de long; apex du fruit dépassant le calice; partie libre du calice cupuliforme; Behefaka, Irarona (au S d’Ambilobe) ................................................................ 3. D. hongwae
5. Feuilles elliptiques à obovales, limbe le plus large moins de 3 fois plus long que large, surface abaxiale glabre ou initialement portant un indument farineux, glabrescent; partie accrescente du calice en fruit entière; région d’Antsiranana jusqu’à Daraina ............. 6. D. suarezensis
5a. Feuilles étroitement elliptiques ou étroitement oblongues à linéaires, parfois étroitement obovales, limbe le plus large au moins (3–)4–8 fois plus long que large, surface abaxiale portant un indument roux-farineux, parfois également sur la surface adaxiale, rarement glabre; partie accrescente du calice en fruit nettement lobée ............. 6
6. Fleurs femelles étroitement ellipsoïdes, 11 – 15 mm de long, au moins 2 fois plus longues que larges; fruit mature 12– 16 × 7–10 mm, lobes du calice 6– 8 mm de long; extrême N de Madagascar .......... 4. D. ranirisonii
6a. Fleurs femelles ellipsoïdes à subsphériques, 5– 10 mm de long, à peine plus longues que larges; fruit mature 10–13 × 6 mm, lobes du calice 3 mm de long; parties centrale et sud de Madagascar .................. 2. D. danguyana
description: Published as part of Schatz, George E., Lowry Ii, Porter P. & Phillipson, Peter B., 2020, Taxonomic studies of Diospyros (Ebenaceae) from the Malagasy region. V. Synoptic revision of the Bernieriana group in Madagascar and the Comoro Islands, pp. 203-218 in Candollea 75 (2) on pages 204-205, DOI: 10.15553/c2020v752a5, http://zenodo.org/record/5724867