8H ORCIIIDACEAE. 



3. LYSIELLA Rydb. 



I. Lysiella obtusata ( rursh) Rydb. In boggy places in the woods from 

 Newf. to Alaska. X. Y. and Colo. — Alt. 8500-11,500 ft. — Chicken Creek, West 

 La Plata Mountains; North Park; Clear Creek; camp on Little Beaver 

 Creek; bank of Michigan, North Park. 



4. LIMNORCHIS Rydb. Bug Orchiu. 



Connective of the anther narrow : anther cells therefore close together : spur not 

 longer than the tip. 

 Flowers greenish or purplish. 



Spur Yi-Vi as long as the lip, very saccate. 



Lip linear or nearly so, 5-7 mm. long ; ovary slightly curved ; spike elon- 

 gated. I. L. siricla. 

 Lip lanceolate, fleshy 4-5 mm. long ; ovary strongly curved ; spike usually 

 short. 2. L. purpurasccus. 

 Spur almost equalling the lip, scarcely saccate. 3. L. viridiflora. 

 Flowers whitish. 4. L. borcalis. 

 Connective of the anther broad : anther cells therefore distant : spur much ex- 

 ceeding the tip. 5. L. laxiflora. 



1. Limnorchis stricta (Lindl.) Rydb. In bogs from Mont, to Alaska, Colo, 

 and Wash.^Alt. 8500-10,000 ft. — Upper La Plata; Jack Brook; Twin Lakes; 

 Manitou. 



2. Limnorchis purpurascens Rydb. On rich brook-banks in the mountain 

 woods of Colo. — Alt. 7500-11,000 ft. — Gunnison; Parlin; Iron Mountain; 

 Georgetown ; Como ; mouth of Cheyenne Cafion ; Barnes' Camp ; camp on 

 Little Beaver Creek ; swamp above Beaver Creek ; Franklin ; mountains north 

 of Steamboat Springs. 



3. Limnorchis viridiflora (Cham.) Rydb. (Habcnaria hypcrborea S. Wats, 

 and of Coult. Man.; not R. Br.) In bogs from Alb. to Alaska and Colo. — 

 Alt. 6500-10,000 ft. — ]McCoy; Ouray; Gunnison; La Veta; Cascade; Piedra; 

 Wahatoya Creek ; Georgetown ; West La Plata Mountains ; Clear Creek ; 

 Barnes' Camp ; mountains above Ouray ; mountain north of Steamboat 

 Springs. 



4. Limnorchis borealis (Cham.) Rydb. {Habcnaria dilatata of Coult. 

 Man.) In bogs from Mont, to Alaska, Colo, and Wash. — Alt. 8500-10,000 

 ft. — Chambers' Lake ; Coluinbine ; Veta Pass ; Graymont ; Gore Pass ; sum- 

 mit of North Park Range. 



5. Limnorchis laxiflora Rydb. In bogs from Ore. to Colo, and Utah. — 

 Uncompahgre Mountains ; Los Pinos ; Franklin. 



5. PIPERIA Rydb. 



I. Piperia unalaschensis (Spreng.) Rydb. (Habcnaria Unalaschcnsis S. 

 Wats.) In damp rich woods from Mont, to Alaska, Colo, and Calif. — Alt. 

 about 8500 ft. — South Boulder Peak. 



6. EPIPACTIS R. Br. Helleborine. 



I. Epipactis gigantea Dougl. In rich woodlands from Mont, to B. C, 

 Western Tex. and Calif. — Alt. about 8500 ft. — Glenwood Springs. 



