Microthelys is a genus of flowering plants from the orchid family, Orchidaceae. Its species are native to Mexico, Central America and Ecuador. 1. \n* Microthelys constricta (Szlach.) Szlach. - central Mexico 2. \n* Microthelys hintoniorum (Todzia) Szlach., Rutk. & Mytnik - Nuevo León 3. \n* Microthelys intagana (Dodson & Dressler) Szlach. - Ecuador 4. \n* Microthelys markowskiana (Szlach.) Szlach. - Oaxaca 5. \n* Microthelys minutiflora (A.Rich. & Galeotti) Garay - from San Luis Potosí south to Guatemala 6. \n* Microthelys nutantiflora (Schltr.) Garay - Guatemala, Costa Rica 7. \n* Microthelys rubrocallosa (B.L.Rob. & Greenm.) Garay - from central Mexico south to Guatemala