GROUP Nanum
Characterized by the dichaea-like pendant stems with pairs of apposing flowers on an inflorescence without spathaceous bracts and has prominent floral bracts
GROUP Nanum SUBGROUP Nanoecallosum Differs in the simple, entire lip
References W3 Tropicos, Kew Monocot list , IPNI ; Icones Orchidacearum 2 Plate 113 Hagsater & Salazar 1993; Icones Orchidacearum 2 Plate 155 Hagsater & Salazar 1993; Icones Orchidacearum 2 Plate 192 Hagsater & Salazar 1993; Icones Orchidacearum Peruviarum Plate 246 Bennett & Christenson 1995; Icones Orchidacearum 3 Plate 351 Hagsater Sanchez & Garcia-Cruz 1999; Icones Orchidacearum 3 Plate 360 Hagsater Sanchez & Garcia-Cruz 1999; Icones Orchidacearum 3 Plate 388 Hagsater Sanchez & Garcia-Cruz 1999; Icones Orchidacearum 4 Plate 448 Hagsater & Salazar 2001; Icones Orchidacearum 8 Plate 857 Hagsater & Salazar 2006;
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