110 



Cypripedium acaule, Ait. (Common Lady's Slipper.) 

 Common in rather dry woods, chiefly under conifers. 



Var. alba. 

 Leaves lighter green, flowers large, pure white. There are light 

 colored flowers on the ordinary plants, but the flowers of the va- 

 riety are whiter still. Georgetown (Mrs. Horner), Beverly (G. 

 D. Phippen), N. Reading. Scarce. 



AMARYLLIDACE.2B. 



(AMAnYLLis Family.) 



Hypoxys erecta, L. (Star-grass.) 

 Damp places, among other plants. Common. 



IRIDACEiE. 



(Iris Family.) 



Iris versicolor, L. (Blub Flag.) 

 Common in meadows and by brooks. 



Iris Virginica, L. (Slendkk Blub Flag.) 



"Stony brook, Johnson's field, Lynn" (Tracy), Andover abundant, 

 Ipswich (Oakes), etc. Not so common as the last except in the 

 vicinity of Andover where it is the prevailing species. 



Sisyrinchium Bermudiana, L. (Blub-bybd Grass.) 

 Fields, etc. Common. 



SMILACEiE. 



(Smilax Family.) 



Smilax rotundifolia, L. (Greenbrier.) 



Thickets. Common. 

 Smilax herbaeea, L. (Carrion Flower.) 



Roadsides and moist fields. Frequent. 



LILIACEiEI. 



(Lily Family.) 



Trillium ereetum, L. (Purple Trillium.) 

 Blind Hole Swamp, Danvers (J. H. Sears). Along the Ipswich 

 river, Swampscott, 1879 (W. P. Andrews). "Saw two plants in 

 Swampscott May 12, 1868" (memo. Eev. J. L. Russell). Haverhill 

 (Mrs. Downs). Occasional. 



