Reference(s): Peltier, M. (1981)
Status: this genus has not yet been assessed for species diversity and endemism
Additional taxonomic work: required at species level
Species level data entry: not yet complete
Note: A. arvensis, a widespread weed, has never been collected with certainty in Madagascar. Two specimens at P collected by Saboureau are labelled 'Madagascar', but this is believed to be an error. Peltier recognised 6 species in his Flore Mad. treatment. I doubt whether A. peploides can be consistently separated from A. nummulariifolia since capsules are not always present. The two varieties of A. nummulariifolia may deserve specific level recognition and A. tsaratananae is supposed to be separated based on floral characters, but only a bud seems to have been examined.
Contributed/compiled by: P.B. Phillipson
Updated on: 07 May. 2007