P FLORA OF BURLINGTON AND VICINITY 7 



P. rnbra (Du Roi) Dietr. Red Spruce. Frequent in deep ravines about 

 Burlington, (Howe), but rare elsewhere. May. South Burling- 

 ton, (Hubbard). 



PINUS (Tourn.) L. Pine 



P. resinosa Ait. Red or Norway Pine. Dry woods; frequent. May, 

 June. 



P. rigida Mill. Pitch Pine. Barren sandy soil; common. May, June. 



P. Strobus L. White Pine. Common. June. 



THUJA L. Arbor Vitae 



T. occidentalis L. Arbor "Vitae, White Cedar. Swamps and rocky banks ; 

 common. Apr., May. 



TSUGA (Endl.) Carr. Hemlock 



T. canadensis (L.) Carr. Swamps and rocky woods; common. May. 



TYPHACEAE. CAT=TAIL FAMILY 



TYPHA (Tourn.) L. Cat-tail Flag 



T. angustifolia L. Narrow-leaved Cat-tail. Marshes; rare. July. Bur- 

 lington, (N. F. F.); Colchester, (Griffin). 



T. latifolia L. Common Cat-tail. Marshes; common. July. 



SPARGANIACEAE. BUR=REED FAMILY 



SPARGANIUM (Tourn.) L. Bur-reed 



S. auiericanum Nutt. Muddy shores; rare. July, Aug. Burlington, 

 (N. F. F.). 



S. diTersifolium Graeb. Muddy shores; rare. July, Aug. Colchester, 



(N. F. F.). 



S. enrycarpiim Engelm. Broad-fruited Bur-reed. Borders of ponds and 

 rivers; frequent. July, Aug. 



