214 NEW VORK STATE MUSEUM 



Tufted Loosestrife 



Naiimburgia thrysiflora (Linnaeus) Duby 



Plate 163 



Stems mainly simple, often several together from a slender, perennial 

 rootstock, i to 2\ feet high, smooth or slightly pubescent. Leaves opposite, 

 lanceolate or oblong-lanceolate, pointed at the apex, narrowed at the base, 

 sessile, 2 to 5 inches long, one-third to 1 inch wide, the lower leaves reduced 

 to ovate scales. Flowers yellow, spotted with black, one-sixth to one- 

 fourth of an inch broad, in dense, spikelike, oblong or ovoid racemes on 

 stout axillary stalks which are one-half to \\ inches long; sepals five to 

 seven-divided and spotted, the segments narrow; corolla deeply five to 

 seven-parted with rather narrow segments. Fruit a globose capsule which, 

 when mature, is about as long as the sepals or slightly longer. 



In swamps, low woods and wet meadows, Nova Scotia to Alaska, 



south to Pennsylvania, Missouri, Montana and California. Flowering from 



the latter part of May to July. The same species is also found in Europe 



and Asia. 



Star Flower; Chickweed Wintergreen 



Trientalis borealis Rafmesque 

 (7". americana Pursh) 



Plate 165b 



Stems (rootstocks) buried, creeping and horizontal, several inches long, 

 sending up simple branches, 3 to 9 inches high, each of which bears a whorl 

 of five to ten leaves at the summit, and a few scalelike leaves on the lower 

 part of the stem. Leaves thin, lanceolate or oblong-lanceolate, sharp 

 pointed at both ends, sessile or nearly so, i| to 5 inches long, one-third to 

 1 \ inches wide, the margins minutely crenulate. Flowers one-third to 

 one-half of an inch broad, white, one to three or four, on very slender 

 peduncles at the summit of the leaf -bearing stems; sepals very narrow and 

 spreading, usually seven in number; corolla with five to nine (usually seven) 

 oblong or somewhat obovate, pointed segments. Fruit a small, globular 

 capsule shorter than the sepals. 



