Tibouchina, Aublet, 1775

Silva, Marcus Felippe Oliveira Da, Guimarães, Paulo José Fernandes & Michelangeli, Fabián A., 2014, Nomenclatural and taxonomic novelties in the tribe Melastomeae (Melastomataceae), Phytotaxa 186 (4), pp. 222-228 : 224

Key to Tibouchina s ensu stricto and allied genera from Brazil –Core Melastomeae

1. Hypanthium and stem internodes covered by scales ........................................................................................................ Tibouchina

1. Hypanthium and stem internodes covered by hairs .......................................................................................................................... 2

2. Stamens extremely dimorphic in color and shape; large stamens with connective much prolonged and ventrally with a pair of filiform lobes; small stamens with connective not prolonged and with short, thick ventral lobes ................................ Desmoscelis

2. Stamens similar in color and slightly dimorphic in shape, in varying degrees; connective appendages usually present and similar in the two cycles of stamens ............................................................................................................................................................. 3

3. Anthers purple to lilac, rarely cream or white, with well-developed pedoconnectives; often filaments hairy and anther connectives with gland-tipped hairs; caducous calyx in fruit .................................................................................................................... Pleroma

3. Anthers all or partly yellow and many with reduced pedoconnectives; filament and anther connectives glabrous; persistent calyx in fruit ........................................................................................................................................................................... Chaetogastra