Tribe Mimozygantheae

R. H. FORTUNATO

Legumes of the World

Royal Botanic Gardens, Kew Press

Lugar: Kew, Richmond; Año: 2005; p. 184 - 185

The monogeneric tribe Mimozygantheae was described by Burkart (1939) to accommodate the single species Mimozyganthus carinatus (Griseb.) Burkart which it was transferred from the genus Mimosa.  He commented that the genus Mimozyganthus was transitional between the Mimosoideae and Caesalpinioideae especially because of its peltate stigma, imbricate sepals and essentially valvate petals (the upper half of the corolla always with the petals valvate but the lower half with some overlap at the margins). He suggested from the combinations of the sepals and petals aestivation a relationship with tribe Parkieae (the two genera of that tribe currently placed elsewhere and the tribe disbanded) but pointed out that Mimozyganthus differed in having spinescent stipules, free sepals, free stamens, eglandular anthers, a lack of staminoides, a few-seeded ovary and a large peltate stigma. Burkart (1943, 1952) proposed  that the genus Dinizia Ducke should also be included in the Mimozygantheae but Hutchinson (1964) placed Dinizia in the Mimoseae and Schulze-Menz (1964) placed it in the Parkieae. Guinet (1981) grouped Mimozyganthus with Dinizia in his mimosoid pollen study, but Elias (1981) repositioned Dinizia in the Mimoseae thus re-establishing the Mimozygantheae as monogeneric. Luckow et al. (2003) did not include Mimozyganthus in their molecular study but  with new data collected Luckow, Fortunato & col. (in prep.) can expect the tribe Mimozygantheae to be disbanded in the future.