PLANTS OF IOWA 153 



CCELOGOSSUM, Hartman. 



1957. C. bract eatum, (Willd.) Parl. Long Bracted Orchis. 

 In moist soil. 



GYMNADNIOPSIS, Rydb. 



1958. G. clavellata, (Michx.) Rydb. Small Green Wood 



Orchis. 

 Infrequent. 

 LIMNORCHIS, Rydb. 



1959. L. hyperberea, (L.) Rydb. Tall Leafy Green Orchis. 

 Rare, in deep upland woods. 



LYSIA.S, Salisb. 



1960. L. hookeriana, (A. Gray) Rydb. Hooker's Orchis. 

 In upland woods. 



BLEPHARIGLOTTIS, Raf . 



1961. B. leucophcea, (Nutt.) Rydb. Prairie White Fringed 



Orchis. 



Moist prairies. 

 TRIPHORA, Nutt. 



1962. T. trianthophora, (Sw.) Rydb. Nodding Pogonia. 

 Infrequent. 



LIMADORUM, L. 



1963. L. tuberosum, L. Grass Pink. 

 In wet meadows. 



GYRORTACHYS, Pers. 



1964. G. cernua, (L.) Kuntze. Nodding Ladies' Tresses. 

 Wet meadows and boggy places; infrequent. 



1965. G. gracilis, (Bigel.) Kuntze. Slender Ladies' Tresses. 

 Dry soil. Infrequent. 



PERAMIUM, Salisb. 



1966. P. pubescens, (Willd.) MacM. Downy Rattlesnake 



Plaintain. 

 In woods, not rare. 



ACHROANTHES, Raf. 



1967. A. unifolia, (Michx.) Raf. Green Adder's Mouth. 

 In deep woods. 



