Orthophytum duartei L.B.Sm. (
non Crypthantus duartei L.B.Sm.)
Taxonomic Notes:
- Formerly taxon number 34- 11 —See Smith & Downs 1979 p. 1704
- Recognized some morphological similarities to Orthophytum fosterianum L.B.Sm. —See Louzada 2012
- Not related to Orthophytum foliosum L.B. Sm. nor Orthophytum fosterianum L.B.Sm. It separate it widely from all other species of Orthophytum and gives it a unique position in the genus yet to be clarified. —See Leme 2014b p. 180
- Placed in subgen. Orthophytum subg. Capixabanthus —See Leme et al. 2017b p. 73
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