110 



Plants in Massachusetts. 



TRIBE II.— GYMNOSPERMiE. 



CONIFERJE. 



Cupressus, L. 



thuyoides, L. White Cedar. A. B. and especially N. B. 

 Juniperus, L. 



communis, L. Juniper. Mount Tom and B. 



Virginiana, L. Red Cedar. 

 Pinus, L. 



alba, Ait. Spruce. 



balsamea, W. Fir Tree. Balsam Tree, 

 Canadensis, L. Hemlock Tree. 

 fraseri, Ph. Saddle Mountain. Dewey, 

 nigra, Ait. Black Spruce. 

 pendula, Ait. Hackmatack. Tamarack. 

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

 rigid a, L. Pitch Pine. 

 strobus, L. White Pine. 

 Taxus, L. 



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



Sub-class II — ENDOGYN^ OR MONOCOT YLE DONOUS 



PLANTS. 



TRIBE I. — PETALOIDEiE. 



AL1SMAC EJE. 



Alisma. L. 



plantago, L. Water Plantain. 

 Sagittaria, L. 



acutifolia, Ph. Arrow Head. 



heterophylla, Ph. 



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

 sagittifolia, L. Arrow Head, a latifolia. (i gracilis. 

 HYDROCHARlDEiE. 



Udora, Nutt. 



Canadensis, Nutt. Serpicula verticillata, Muhl. 

 Valisneria, L. 



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



XYRIDE^E. 



Xyris, L. 



Caroliniana, Walt. Yellow-eyed Grass. 

 HYPOXIDEjE. 



Hypoxis, L. 



erecta, L. Star Grass. 



IR1DEJE. 



Iris, L. 



versicolor, L. Wild Iris. Blue Flag. 

 Virginica, Torrey. gracilis, Big. Boston Iris. 

 Sisyrinchium, L. 



anceps, L. Blue-eyed Grass. 



ORCHlDEiE. 



Aplectrum, Nutt. 



hyemale, Nutt. Cy rubidium hycmale, W. Putty Root. Adam and 



[Eve. Conway. 



