Croton adenophorus Baill., Adansonia 1: 153. 1861, as 'adenophorum'

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 : 9-10

2. Croton adenophorus Baill., Adansonia 1: 153. 1861, as 'adenophorum'

Croton payerianus Baill., Adansonia 1: 154. 1861, as ' payerianum '. Type. Madagascar. Prov. Antsiranana: Diana Region, Nossibé, 1849, L.H. Boivin 2187 (lectotype, designated here: P [P00389508]!; isolectotypes: G-DC [G00311984]!, G [G00446358]!, G [G00446359]!, P [P00389509]!, P [P00404480]!, P [P00404481]!, P [P00123684]!).

Croton tulasnei Baill., Adansonia 1: 156. 1861. Type. Mayotte [French Overseas Department]: Bouzi [Ilot M’Bouzi], 1850, L.H. Boivin s.n. (lectotype, designated by Kainulainen et al. 2017b, pg. 382: P [P00133305]!; isolectotypes: P [P00133306]!, [P00466148]).

Croton subaemulans Baill., Bull. Mens. Soc. Linn. Paris 2: 850. 1890. Type. Madagascar. sin. loc., R. Baron 5795 (holotype: K [K000422590]!; isotype: P [P00133593]!).

Oxydectes adenophora (Baill.) Kuntze, Revis. Gen. Pl. 2: 610. 1891. Type. Based on Croton adenophorus Baill.

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

Oxydectes tulasnei (Baill.) Kuntze, Revis. Gen. Pl. 2: 613. 1891. Type. Based on Croton tulasnei Baill.

Croton tenuicuspis Baill., Bull. Mens. Soc. Linn. Paris 2: 927. 1891. Type. Madagascar. sin. loc., R. Baron 5846 (holotype: P [P00133364]!; isotype: K [K000422590]!).

Type.

Madagascar. Prov. Antsiranana: Diana Region , Nossi-bé [Nosy Be], 1837, J.M.C. Richard 214 (lectotype, designated by Kainulainen et al. 2017b, pg. 382: P [P00123689]!; isolectotype: P [P00123690]!) . Madagascar. Prov. Antsiranana: Diana Region . Nossi-bé [Nosy Be], J.M.C. Richard 574 (syntype: P [P00123691]!); ibid. loc., 1849, L.H. Boivin 2187 (syntype: P [P00301515]!) .

Habit and distribution.

Shrubs or small trees; northern and northwestern Madagascar (Antsiranana, Mahajanga) and Mayotte in the Comoros Archipelago.

Notes.

Croton adenophorus was substantially recircumscribed from the concept of Leandri (1939) and Radcliffe-Smith (2016) by Kainulainen et al. (2017b). In both earlier publications, C. loucoubensis was treated as a synonym of C. adenophorus , and C. subaemulans was recognized as a distinct species. This earlier synonymy was due to a fundamental misunderstanding of C. adenophorus . See Kainulainen et al. (2017b) for further details and the distinguishing features of C. adenophorus and C. loucoubensis .

The sheet P00466148 is listed in Sonnerat under Croton tulasnei , but without an image. We never saw this specimen at P either before or after the herbarium renovation in 2015, and the whole folder of C. tulasnei was missing during visits to P in 2016 and 2017.

Radcliffe-Smith (2016) mentioned Boivin 2187 at P as the lectotype for Croton adenophorus but failed to state "designated here" or an equivalent statement, so his designation was not validly published.