328 Class XX. Order III. 



sides of the style, projecting over the anthers. Woods, Ver- 

 mont, New-Hampshire &c. On the borders of a remarkable 

 marl pond in Barnard, Vermont. June. Perennial. 



CYPRIPEDIUM SPECTABILE. Willd. Tall Ladies' Slipper. 

 Stem leafy ; lobe of the style elliptic-heart shaped ; 

 outer petals broad-ovate, obtuse ; lip longer than the 

 petals, cleft before. 



Syn, CrpRiFEDiuM CANADENSE. MX. 



A stout plant about two feet high, the stem and leaves hairy. 

 Leaves oval lanceolate, plaited, exactly resembling those of Ve- 

 ratrum viride. Flowers two or three, large, the lip much in- 

 flated and variegated with stripes of purple and white. In Au- 

 gusta, Maine ; Woodstock, Vermont. July. Perennial. 



Subgenus . Petals Jive, lip of the nectary 



acute. 



CYPRIPEDIUM ARIETINUM. Ait. Rani's Head. 



Stem leafy ; lobe of the style orbicular ; petals five, 

 the two lower ones linear lanceolate, deflexed, the two 

 lateral ones linear, spreading, the upper one oblong- 

 ovate, acute ; lip as long as the petals, inversely coni- 

 cal. 



Stem six or eight inches high with a few alternate, lanceolate 

 leaves. Flower much smaller than in any of the foregoing spe- 

 cies. Petals greenish brown, the upper one much broadest, 

 Lip small, inflated, acute, reticulated with red and white. It 

 has been compared in shape to a sheep's head, the lateral petals 

 representing the horns. In Hallowell, Maine. May. 



HEX.WDRM* 



339. ARISTOLOCHIA. 



ARISTOLOCHIA SERPENTARIA. Virginia Snake Root. 



Bigelow, Medical Botany, P). xlix. 



Leaves heart shaped, oblong, acuminate ; stem flex- 

 uous ; peduncles radical. 



The root is extremely fibrous, and sends up a number of sterns^ 

 simple or slightly branched, less than a foot in height, jointed. 



