Flowering Plants. 627 



Pinus L. 



nigra, Lamb. Black Spruce. 

 pendula, Ait. Hackmatack. Tamarack. 

 resinosa, Lamb. Norway Pine. A. and Worcester Co. 

 rig-id a, L. Pitch Pine. 

 strobus L. White Pine. 

 Taxus L. 



Canadensis, W. Dwarf Yew. A. Very common. 



Sub-class II.— ENDOGYNAE OR MONOCOTYLED- 

 ONOUS PLANTS. 



Tribe I. — Petaloideae. 



ALISMACEAE. 



Alisma L. 



plantago, L. Water Plantain. 

 Sagittaria L. 



acutifolia, Ph. Arrow Head. 



heterophylla, Ph. 



obtusa, W. N. B. Var. of S. Sagittif. 

 sagittifoila, L. Arrow Head a latifolia. /S gracilis. 



HYDROCHARIDEAE. 



Udora Nutt. 



Canadensis, Nutt. Serpicula verticillata, Muhl. 

 Vallisneria L. 



spiralis, L. Tape Grass. Cambridge and Connecticut river. 



XYRIDEAE. 



Xyris L. 



Caroliniana, Lam. Yellow-eyed Grass. 



HYPOXIDEAE. 



Hypoxis L. 



erecta, L. Star Grass. 



IRIDEAE. 



Iris L. 



versicolor, L. Wild Iris. Blue Flag. 

 Virginica, Torrey. Gracilis, Big. Boston Iris. 

 Sisyrinchium L. 



anceps, L. Blue-eyed Grass. 



ORCHIDEAE. 



Aplectrum Nutt. 



II hyemale, Nutt. Putty Boot. Adam and Eve. Conway. 



Cymbidium hyemale, W. 



