245] FLORA OF BOULDER, COLORADO 97 



108. PERAMITTM Salisb. RATTLESNAKE PLANTAIN. 



284. P. ophioides (Fernald) Rydb. SNAKE-MOUTH RATTLE- 

 SNAKE PLANTAIN. 



Densely wooded canons on north slope of Green Mt, very 

 rare, 7000-8100 ft. (Daniels, 827). 



PRINCE EDWARD'S ISLAND to SOUTH DAKOTA; NORTH CAR- 

 OLINA to COLORADO. 



109. ACROANTHES Raf. ADDER'S MOUTH. 



285. A. monophylla (L.) Greene [Microstylis monophylla 

 (L.) Lindl.]. ONE-LEAVED ADDER'S MOUTH. 



Deep canons on north slope of Green Mt., very scarce, 

 6500-8100 ft. (Daniels, 342). 



QUEBEC to MINNESOTA; PENNSYLVANIA to COLORADO. 



110. CYTHEREA Salisb. CALYPSO. 



286. C. bulbosa (L.) House. [Calypso borealis Salisb.]. 

 NORTHERN CALYPSO. 



Nederland, Boulder County, 8263 ft. (Miss Zora Phillips). 

 LABRADOR to ALASKA; MAINE to CALIFORNIA: EUROPE. 



111. CORALLORHIZA R. Br. CORALROOT. 

 286^. C. ochroleuea Rydb. YELLOW CORALROOT. 

 Redrock lake, 10100 ft. (Ramaley and Robbins). 

 NEBRASKA to COLORADO. 



287. C. Corallorhiza (L.) Karst. [C. innata R. Br.]. EARLY 



CORALROOT. 



Canon in mesa at foot of Flagstaff Hill, only two plants, 

 5700-5800 ft. (Daniels, 122). Also at Caribou, 10000 ft. 

 (Rydberg). 



NOVA SCOTIA to ALASKA; GEORGIA to COLORADO and 

 WASHINGTON. 



288. C. multiflora Nutt. LARGE CORALROOT. 



A solitary cluster of plants under conifers at the Royal 

 Arch at base of the Flat-irons, 6200 ft. (Daniels, 229). Also 

 on North Boulder Peak (Rydberg). 



NOVA SCOTIA to ALASKA; FLORIDA to CALIFORNIA. 



