248 
Platanthera lacera (Michaux) G. Don, ragged orchis, ragged orchid 
» G: H. lacera (Michaux) Lodd.] (Luer, 1975), p. 476 
var. lace: 
P. leucophaea (Nutt.) Lindley, eastern prairie fringed orchid 
[S, G: H. leucophaea (Nutt.) A. Gray] (Luer, 1975), 
76 
Pr, peramoena usa Gray) A. Gray, purple paerie: eet [S: H. 
peramoena A. Gray] (Luer, 1975), p 
*P. praeclara Sheviak & Bowles, western ae 2 orchid 
iak and Bowles, 1986) 
P. psycodes (L.) Lindley, small purple fringed orchid [S: H. 
Psycodes (L.) Sprengel] (Luer, 1975), p. 476 
POGONIA, snake mouth, pogonia 
Pogonia anaes o> Ker Gawler, rose pogonia, snake 
outh, p. 4 
f. 5 a 
SPIRANTHES, ladies’ tresses 
Spiranthes = (L.) Rich., common ladies’ tresses, nodding 
dies’ tress Ses, p. "480 
S. lacera Rat) Raf., slender ladies’ tresses, p. 480 
var. gracilis (Bigelow) Luer [S, M: S. gracilis (Bigelow) 
Beck] (Luer, 1975) 
var. lacera 
S. lucida (H. Eaton) Ames, shining ladies’ tresses, yellow-lipped 
ladies’ tresses, p. 482 
*S. magnicamporum Sheva Great Plains ladies’ tresses 
(Sheviak, 1973, 
S. ochroleuca (Rydb.) ade si S. cernua (L.) Richard var. 
ochroleuca (Rydb -) Ames], see excluded taxa 
S. ovalis Lindley, oval ladies’ tresses, p. 482 
S: Steyermark G: Great Plains Flora M: Mohlenbrock 
