Plants variable, all faculatative geophytes, commonly leafless 
during anthesis. Roots fasciculate, fleshy, tuberous. Leaves, 
when present, either basal or cauline, with a cuneate base. Stem 
erect, slender to robust, vaginate, terminated by a few- to many- 
flowered spike; sheath chartaceous, diaphanous. Flowers small 
to medium. 
LECTOTYPE: Spiranthes chloreaeformis Rich. & Gal., in 
hoc loco. 
14 species native to Mexico and Guatemala. 
Index to species 
Deiregyne albovaginata (C. Schweinf.) Garay, comb. nov. 
Basionym: Spiranthes albovaginata C. Schweinf. in Bot. Mus. Leafl. 4: 
103, 1937 
Deiregyne chartacea (L.O.Wms.) Garay, comb. nov. 
Basionym: Spiranthes chartacea L.O.Wms. in Bot. Mus. Leaf. 12: 226, 
1946 
chloreaeformis (Rich. & Gal.) Schltr. = Deiregyne diaphana (Lindl.) Garay 
confusa Garay 
Deiregyne dendroneura (Sheviak & Bye) Garay, comb. nov. 
Basionym: Spiranthes dendroneura Sheviak & Bye in Brittonia 32: 368, 
1980 
Deiregyne diaphana (Lindl.) Garay, comb. nov. 
Basionym: Spiranthes diaphana Lindl. in Bot. Reg. 30: Misc. 12, 1844 
Deiregyne durangensis (A. & S.) Garay, comb. nov. 
Basionym: Spiranthes durangensis A. & S. in Bot. Mus. Leafl. 3: 128, 
1935 
Deiregyne eriophora (Robins. & Greenm.) Garay, comb. nov. 
Basionym: Spiranthes eriophora Robins. & Greenm. in Amer. Journ. Sci. 
50: 165, 1895 
Deiregyne falcata (L.O.Wms.) Garay, comb. nov. 
Basionym: Spiranthes falcata L.O.Wms. in Bot. Mus. Leaf]. 12: 228, 
1946 
hemichrea (Lindl.) Schltr. = Aulosepalum hemichrea (Lind]l.) Garay 
hondurensis (Schltr.) Schltr. = Gularia trilineata (Lindl.) Garay 
Deiregyne obtecta (C. Schweinf.) Garay, comb. nov. 
Basionym: Spiranthes obtecta C. Schweinf. in Bot. Mus. Leafl. 4: 106, 
1937 
obtusa (Schltr.) Schltr. = Aulosepalum Nelsoniu (Greenm.) Garay 
pandurata Garay 
Deiregyne pseudopyramidalis (L.O.Wms.) Garay, comb. nov. 
Basionym: Spiranthes pseudopyramidalis L.O.Wms. in Bot. Mus. 
Leafl. 12: 232, 1946 
pulchra (Schltr.) Schltr. = Aulosepalum hemichrea (Lind1.) Garay 
ramentacea (Lindl.) Schltr. = Aulosepalum ramentaceum (Lindl.) Garay 
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