246 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Great Barrington (Walters); New Marlboro (Walters). Possibly 
occurs throughout the County, as it is easily overlooked unless in 
flower. 
CALOPOGON. 
(Limodnnitu 111. Fl. cd. 2.) 
C. pulchellus (Sw.) R. Br. Grass Pink. — Borders of bogs; oc- 
casional in the valley. Williamstown; Pittsfield; Stockbridge; 
Great Barrington (Walters); New Marlboro; Sheffield (Walters). 
CORALLORRHIZA. Coral Root. 
C. maculata Raf. — Rich woods; common. 
C. trifida Chatelain.— (C. CoraUorhiza III. FI. ed. 2.) 
Rich woods, wet slopes and shaded peat bogs; frequent. 
CYPRIPEDIUM. Lady's Slipper; Moccasin Flower. 
C. acaule Ait. Pink Lady's Slipper. — (Fissipes acaule 111. Fl. 
ed. 2.) 
Dry woods and knolls in swamps; frequent. Altitude 1900 feet 
(Savoy). 
C. arietinum R. Br. Ram's Head Lady's Slipper. — Great 
Barrington (Miss Helen Brown). 
C. hirsutum Mill. Showy Lady's Slipper. — (C reginae 111. Fl. 
ed. 2.) 
Cold swamps; frequent in the valley. 
forma album (Sweet), comb, nov.— ( Vid. Brit. Fl. Gard. 3: 240, 
1827-29.) Flowers pure white. 
Williamstown (Pres. Carter) ; Becket (specimen in Gray Herbarium). 
C. parviflorum Salisb. Smaller Yellow Lady's Slipper. — 
Rich woods and borders of swamps; frequent. 
var. pubescens (Willd.) Knight. Larger Yellow Lady's Slip- 
per. — (C. parrifloruvi 111. Fl. ed. 2 in part.) 
Rich woods; frequent. 
Specimens intermediate between C. parviflorum and the var. 
p^ihescens have been collected at White Oaks, Williamstown 
(Churchill). 
