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.) PINK 



AZALEA. PINXTER-FLOWER. 



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



eastern part of the county. May-June. 

 R. Rhodora, Don. (Rhoclora 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 PYROLA. 

 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 WINTERGREEN. 



Generally 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. 



