(western & central Europe to northwestern Africa) Spiranthes arcisepala M.C. Pace (2017) – Appalachian ladies'-tresses (Northeastern US & Maritime Canada) Spiranthes australis (R.Br.) Lindl. – Austral ladies tresses (southern Caspian Sea and Himalayan Mountains to the South-West Pacific) Spiranthes bightensis M.C. Pace (2021) – Atlantic ladies'-tresses (Mid-Atlantic USA) Spiranthes brevilabris Lindl. (1840) – Texas ladies'-tresses (southeastern USA) Spiranthes casei Catling & Cruise (1974) – Case's ladies'-tresses (eastern Canada & USA) Spiranthes casei var. casei Spiranthes casei var. novaescotiae Catling (1981) (Nova Scotia) Spiranthes cernua (L.) Rich. (1817) – nodding ladies'-tresses (eastern Canada & USA) Spiranthes delitescens Sheviak (1990) – reclusive ladies'-tresses (Southeastern Arizona) Spiranthes diluvialis Sheviak (1984) – Ute's ladies'-tresses (Rocky Mountains USA) Spiranthes × eamesii P.M.Br. (North-eastern U.S.A.) Spiranthes eatonii Ames ex P.M.Br. (1999) – Eaton's ladies'-tresses (southeastern USA) Spiranthes flexuosa (Sm.) Lindl. (1824) – Nepalese ladies'-tresses (Himalayan Mountains to SE Asia, southern Japan, and Indonesia) Spiranthes floridana (Wherry) Cory (1936) – Florida ladies'-tresses (Florida and Texas) Spiranthes graminea Lindl. (1840) – Canelo ladies'-tresses (Arizona, Mexico, Honduras, Nicaragua) Spiranthes × hongkongensis S.Y.Hu & Barretto (1976) (South-eastern China, Nansei-shoto, Taiwan, N. Borneo) Spiranthes igniorchis M.C. Pace (2017) – fire ladies'-tresses (Florida) Spiranthes incurva (Jenn.) M.C. Pace (2017) – Sphinx ladies'-tresses (Midwestern US & southern Canada) Spiranthes infernalis Sheviak (1989) – Ash Meadows ladies'-tresses (Nevada) Spiranthes × intermedia Ames (1903) (South-eastern Canada to north-eastern U.S.A.) Spiranthes × kapnosperia M.C.Pace (2017) – Smoky ladies'-tresses (Smoky Mountains region) Spiranthes lacera (Raf.) Raf. (1833) – northern slender ladies'-tresses (central and eastern Canada & USA) Spiranthes lacera var. gracilis (Bigelow) Luer Spiranthes lacera var. lacera Spiranthes laciniata (Small) Ames (1905) – lace-lipped ladies'-tresses (southeastern USA) Spiranthes longilabris Lindl. (1840) – giant-spiral ladies'-tresses (southeastern USA) Spiranthes lucida (H.H.Eaton) Ames (1908) – shining ladies'-tresses (eastern Canada & USA) Spiranthes magnicamporum Sheviak (1973) – Great Plains ladies'-tresses (central and eastern Canada & USA) Spiranthes maokensis M.C.Pace (2018) (Western New Guinea) Spiranthes nebulorum Catling & V.R.Catling (1988) (Mexico, Guatemala) Spiranthes niklasii M.C. Pace (2017) – Niklas' ladies'-tresses (Ouachita Mountains) Spiranthes ochroleuca (Rydb.) Rydb. (1932) – yellow nodding ladies'-tresses (eastern Canada & USA) Spiranthes odorata (Nutt.) Lindl. (1840) – fragrant ladies'-tresses, marsh ladies'-tresses (southeastern USA) Spiranthes ovalis Lindl. (1840) – October ladies'-tresses (eastern Canada & USA) Spiranthes ovalis var. erostellata Catling (1983) Spiranthes ovalis var. ovalis Lindl. Spiranthes perexilis (Sheviak) M.C. Pace (2019) – Slender starry ladies'-tresses (Sierra Nevada Mountains, USA) Spiranthes porrifolia Lindl. (1840) – leek-leaved ladies'-tresses, creamy ladies'-tresses