Diospyros
publication ID |
https://doi.org/ 10.15553/c2020v752a5 |
DOI |
https://doi.org/10.5281/zenodo.6312894 |
persistent identifier |
https://treatment.plazi.org/id/03CF5312-D206-FFC6-FC92-FED91D46FA20 |
treatment provided by |
Carolina |
scientific name |
Diospyros |
status |
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Key to the species of the Bernieriana group of Diospyros View in CoL
1. Leaf margins distinctly undulate ................................. 2
1a. Leaf margins flat or revolute, not distinctly undulate (weakly undulate in fresh material of D. hongwae View in CoL ) ...... 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 View in CoL
2a. Apex of fruit exserted above the calyx; fruit ellipsoid; Zombitsy, Tsihombe .................................... 5. D. silicea View in CoL
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 View in CoL
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 View in CoL
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 View in CoL
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 View in CoL
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 View in CoL
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 View in CoL ) ................................................................. 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 View in CoL
2a. Apex du fruit prolongé au-delà du calice; fruit ellipsoïde; Zombitsy, Tsihombe .................................... 5. D. silicea View in CoL
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 View in CoL
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 View in CoL
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 View in CoL
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 View in CoL
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 View in CoL
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