Croton grangerioides Bojer ex Baill., Adansonia 1: 149. 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 : 34

62. Croton grangerioides Bojer ex Baill., Adansonia 1: 149. 1861

Croton boutonianus Müll.Arg., Linnaea 34: 80. 1865. Type. Mauritius. in sylvis montosis, 1833, W. Bojer s.n. (lectotype, designated here: G-DC [G00311198]!; isolectotypes: G [G00446409]!, M [M0110371]!). Mauritius. 1857, L. Bouton s.n. (syntype: G-DC [G00311197]!).

Oxydectes boutoniana ( Müll.Arg.) Kuntze, Revis. Gen. Pl. 2: 611. 1891. Type. Based on Croton boutonianus Müll.Arg.

Oxydectes grangerioides (Bojer ex Baill.) Kuntze, Revis. Gen. Pl. 2: 610. 1891. Type. Based on Croton grangerioides Bojer ex Baill.

Type.

Mauritius. s.d., J. Néraud s.n. (lectotype, designated here: G [G00446387]!; possible isolectotype: P [P00404205]!). Mauritius. à l’embrasure, au-dessous du Pouce , s.d., L.M.A. Du Petit-Thouars s.n. (syntypes: P [P00404204]!, P [P0040179]!) . Mauritius. crêtes de la montagne de Port-Louis, vers l’extrémité au-dessus de l’anse Courtois , Oct 1849, L.H. Boivin s.n. (syntype: P [P00404203]!) . Mauritius. 1850, J.N.E. Vesco s.n. (syntype: P [P00404180]!) . Mauritius. W. Bojer s.n. (original material: MAU [1402; specimen not seen], possible type: G [G00446413]!, M [M0110457]!) .

Habit and distribution.

Shrubs; Mauritius.

Notes.

Baker (1877) distinguished Croton boutonianus from C. grangerioides in his key by the former having entire leaves and pistillate flowers with petals and the latter obscurely crenulate leaves and pistillate flowers that lack petals. Leandri (1939) accepted C. grangerioides , but appears to have overlooked mentioning C. boutonianus , even as a synonym. Coode (1982) treated C. boutonianus as a synonym of C. grangerioides , describing the petals of the staminate flowers as small and delicate, and the crenulation of the leaf margins as variable. We follow here the taxonomy of Coode (1982) in treating C. boutonianus as a synonym of C. grangerioides .