M. demerarensis Gleason, Bull. Torrey Club 75:551. 1948.
Gleason's distinctions for M . demerarensis do not hold for any series of specimens of this complex; even on the holotype, some stamens have short dorsal connective prolongations below the filament attachment. I have been able to examine holotypic material, except for M. trichodes D C . of which material has not been available to any monographer since de Candolle, for all the names involved in this small species group.