17. Sacoila Rafinesque, Fl. Tellur. 4: 86. 1838.
[Latin saccus, sac, and labium, lip, referring to sac-shaped mentum]
Paul Martin Brown & Paul M. Catling
Herbs, terrestrial. Roots fascicled, fleshy. Stems with abbreviated rhizome. Leaves several, in basal rosette; blade oblong-lanceolate to oblong-elliptic. Inflorescences densely flowered racemes. Flowers resupinate, with prominent, free-tipped mentum formed by backwardly extended column foot, lip, and lateral sepals; anther abaxial; pollinarium with linear viscidium; pollinia 2 pairs, pale yellow, soft, mealy; stigma nearly perpendicular to viscidium and rostellum; rostellum linear-needlelike, sharp-pointed, rigid. Fruits capsules, erect, ovoid.
Species ca. 10 (2 in the flora): tropical and subtropical regions, mostly South America.