MIDDLESEX FLORA. 63 



R. viscosum, Torr., var. glaucum. Gray. 



Concord (H. S. Richardson) ; Tewksbury (L. L. Dame) ; Medford 



(G. E. Davenport). June- July. 

 R. nudiflorum, Torr. (Azalea nudiflora, L., Man.) PnuB: 



Azalea. Pinxter-Flower. 



Concord, Ashland, Framingham, Townsend, et al. Eare in the 



eastern part of the county. May- June. 

 R. Rhodora, Don. (Rhodora Candadensis, L., Man.) 



Frequent. May. 



Ledum, L. 



L. latifolium. Ait. Labrador Tea. 

 Townsend (E. H. Hitchings) ; Concord (G. E. Davenport) ; Natick 

 (Austin Bacon) ; Littleton (W. H. Manning). Rare. May-June. 



Pyrola, Tourn. 



P. rotundifolia, L. 



Common. June-July. 

 *P. rotundifolia, L. var asarifolia. Hook. 



Concord (Thoreau) ; Stoneham (Wm. Boott). July. 

 P. elliptica, Nutt. Shin-leaf. 



Common. June-July. 

 P. chlorantha, Swartz. 



Common. June-July. 

 P. secunda, L. 



Rather common. July. 



MoNESES, Salisb. 



M. uniflora. Gray. One-Flowered Ptrola. 

 Stoneham (C. E. Dotey) ; Reading (C. E. Perkins) ; Natick (Austin 

 Bacon) ; Townsend (Miss H. E. Haynes). Scarce. June. 



Chimaphila, Pursh. 



C. umbellata, Nutt. Prince's Pine. Pipsissewa. 



Common. July. 

 C. maculata, Pursh. Spotted Winteegkeen. 



GteneraUy distributed, but not common. Seldom more than a few 



plants in one locality. July. 



Monotropa, L. 



M. uniflora, L. Indian Pipe. 



Common. June-July. 

 M. Hypopitys, L. Pine-sap. 



Common. June-July. 



