Croton mongue Baill., Adansonia 1: 158. 1861

Berry, Paul E., Kainulainen, Kent & Ee, Benjamin W. van, 2017, A Nomenclator of Croton (Euphorbiaceae) in Madagascar, the Comoros Archipelago, and the Mascarene Islands, PhytoKeys 90, pp. 1-87 : 49-51

95. Croton mongue Baill., Adansonia 1: 158. 1861

Oxydectes mongue (Baill.) Kuntze, Revis. Gen. Pl. 2: 612. 1891. Type. Based on Croton mongue Baill.

Croton oreades Leandri, Ann. Mus. Colon. Marseille, sér. 5, 7(1): 72. 1939, syn. nov. Type. Madagascar. Prov. Toamasina: Analamazaotra, 800 m, Dec, H. Perrier de la Bâthie 5287 (lectotype, designated here: P [P00389513]!; isolectotypes: P [P00389512]!, P [P00389514]!). Madagascar. Prov. Fianarantsoa: haute vallée de la Rienana, province de Farafangana, 3 Oct 1926, R. Decary 5563 (syntypes: K [K001040348]!, P [P00133687]!). Madagascar. Prov. Fianarantsoa: Sud-Est de Fianarantsoa, 1000-1200 m, 27 Oct 1926, R. Decary 5842 (syntypes: P [P00133688]!, S [S07-17117]!).

Croton oreades var. occidentalis Leandri, Ann. Mus. Colon. Marseille, sér. 5, 7(1): 73. 1939, syn. nov. Type. Madagascar. Prov. Mahajanga: plateau de Miangaka [Marangaka, Ankaizina ], 1000 m, Dec 1922, H. Perrier de la Bâthie 15130 (lectotype, designated here: P [P00133691]!; isolectotype: P [P00133690]!).

Croton mongue var. vatambensis Leandri, Ann. Mus. Colon. Marseille, sér. 5, 7(1): 72. 1939. Type. Madagascar. Prov. Toliara: Vatambe, Fort-Dauphin, 7 Sep 1932, R. Decary 10601 (holotype: P [P00132950]!, isotypes: K [K001040389]!, TAN [TAN000537]!).

Croton mongue var. borealis Radcl.-Sm., Gen. Croton Madag. Comoro 131. 2016, syn. nov. Type. Madagascar. Prov. Antsiranana: Réserve Naturelle Intégrale no. 12 de Marojejy, le long d’un affluent de la rivière Manantenina, 11 km NW de village Manantenina, 14°26'S, 49°44'E, 1220 m, 27 Oct 1996, P.J. Rakotomalaza, N. Messmer & D. Ravelonarivo 793 (holotype: K!; isotypes: MO!, P [P00433430]!).

Croton oreades var. borealis Radcl.-Sm., Gen. Croton Madag. Comoro 132. 2016, syn. nov. Type. Madagascar. Prov. Mahajanga: Befandriana-Nord, Matsoandakana, Réserve Spéciale Anjanaharibe-Sud, village d’Anjiamazava, suivant la route Nationale d’Andapa-Bealanana, piste vers le Nord approchant le sommet de Bevitsika, 14°42'S, 49°27'E, 1100 m, 14 Dec 1994, D. Ravelonarivo & R. Rabesonina 551 (holotype: K!; isotype: MO!).

Croton oreades var. craspedadenius Radcl.-Sm., Gen. Croton Madag. Comoro 132. 2016, syn. nov. Type. Madagascar. Prov. Antsiranana: Andapa, Ambalamanasy II, Andasibe Kobahina , suivant la piste entre Andasibe Kobahina et Andranovola, dans la Réserve Naturelle Intégrale de Marojejy, 14°31'S, 49°38'E, 603 m, 1-3 Feb 1994, F. Rasoavimbahoaka et al. 86 (holotype: K!; isotypes: MO!, P [P00433034]!).

Croton oreades var. periphoradenius Radcl.-Sm., Gen. Croton Madag. Comoro 133. 2016, syn. nov. Type. Madagascar. Prov. Fianarantsoa: Ampamaherana, 29 Sep 1949, Service Forestier 2033-SF (holotype: P [P00132967]!).

Type.

Madagascar. sin. loc., s.d., L.A. Chapelier s.n. (lectotype, designated here: P [P00132944]!; isolectotype: P [P00132945]!) .

Habit and distribution.

Trees; montane forests of Madagascar (Antananarivo, Antsiranana, Fianarantsoa, Mahajanga, Toamasina, Toliara).

Notes.

It is surprising to us that neither Leandri (1939) nor Radcliffe-Smith (2016) realized that Croton oreades is not distinct from C. mongue . This is the largest tree species among Malagasy Croton , and it is widespread in moist, montane forests.