Acalypha richardiana Baill., Adansonia 1: 268. 1861.

Munoz, Iris Montero, Cardiel, Jose Maria & Levin, Geoffrey A., 2018, Nomenclatural review of Acalypha (Euphorbiaceae) of the Western Indian Ocean Region (Madagascar, the Comoros Archipelago, the Mascarene Islands and the Seychelles Archipelago), PhytoKeys 108, pp. 85-116: 85

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Acalypha richardiana Baill., Adansonia 1: 268. 1861.


30. Acalypha richardiana Baill., Adansonia 1: 268. 1861.  


Comoros: Mohéli, "Ile Mohilla", s.d., M. Richard 287 (lectotype, designated here: P [P04779566]!; isolectotypes: P [P04779562!, P04779564!, P04779565!]).


Madagascar: s.l., s.d., M. Richard 544 [P04779563]!; Mayotte, s.l., s.d., L. H. Boivin 3373 GDC [G00324505]!, P [P00196299!, P00196300!], W [W-Rchb. 1889-0166704]!.

Acalypha ovalifolia   Baill., Adansonia 1: 269. 1861. Acalypha reticulata var. ovalifolia   (Baill.) Müll.Arg., Linnaea 34: 32. 1865. Acalypha filiformis var. ovalifolia   (Baill.) Govaerts, World Checkl. Bibliogr. Euphorbiaceae  62. 2000. Type: Mayotte: Nov 1848. L. H. Boivin 3372 (holotype: P [P00196298]!).


Comoros Archipelago (Anjouan, Mohéli, Mayotte).


Müller Argoviensis (1866: 852 as A. reticulata var. ovalifolia   , 855); Baillon (1892: 1004); Palacký (1907: 25 as A. ovalifolia   , 26); Voeltzkow (1917: 447); Pax and Hoffmann (1924: 127); Leandri (1942: 272); Govaerts et al. (2000: 62, 85, 105).


The specimens, indicated as isolectotypes, do not have Richard’s original label. They instead have labels with Baillon’s handwriting giving the location as “Madagascar”. We believe that the correct location is the one indicated on the selected lectotype, "Ile Mohilla", whose current name is Mohéli, in the Comoros Archipelago. A search of specimens at P showed that Richard’s collections numbered 284-286, 288, 290, 291 and 293 are also from Mohéli (289 has no locality and 292 is not listed). Richard 544 has an apparently original label showing the locality only as “Madagascar.” Collections at P with nearby numbers are labelled as being from either "Nord de Madagascar" or "Ile Nos-bé” (now Nossi-bé), so this collection could be from northern Madagascar, although we have seen no other specimens from outside the Comoros Archipelago.