Marsh herbs, up to 5 cm tall. Leaves obovate, ca. 4 × ca. 1 mm. Raceme 1–2-flowered, flowers up to 1 cm distant from each other. Peduncle with simple and glandular hairs, sometimes branched. Sterile bracts, bract and bracteoles basifixed, lanceolate, up to 0.5 mm long; margin and surface with simple hairs. Pedicels up to 2 mm long, simple and glandular hairs present. Calyx lobes lanceolate, apex acute, ca. 1.5 mm long, margins and external surface with simple and glandular hairs. Corolla pale-yellow to white; superior lip ovate; spur conical, apex rounded, glandular hairs present. Capsule globose, simple and glandular hairs present, dehiscence circumscissile.

Distribution:—This species occurs in Trinidad, Venezuela, Colombia, Guyana, Suriname and Brazil (Taylor 1991, 1999, Fleischmann 2012a). In Brazil it occurs in the northern, northeastern, central-western and southeastern regions (Miranda et al. 2016). In the VNP G. pygmaea is found in grassy white-sand savannas.

Taxonomic notes:—It can be distinguished by the pale-yellow to almost white corolla with a conical spur with rounded apex.

Specimens:— BRAZIL. Roraima, Caracaraí, Viruá National Park: PPBio grid L1 / N6, 12 September 2010, S. M. Costa 698, T.D. M. Barbosa (INPA!, UEC!); PPBio grid, 24 June 2010, T.D. M. Barbosa 1320, S. M. Costa (INPA!).