Monandrae
From Gardenology.org - Plant Encyclopedia and Gardening wiki
Monandrae. Group of the Orchidaceae family. The dorsal stamen of the outer whorl fruitful, all the others wanting. By far the majority of the species belong here. Subgroup I. Pollinia connected by caudicles with a gland at base of anther near stigma. Subgroup 2. Pollen without caudicles or with these attached to a gland at apex of anther.