456 JENNINGS: PLANTS FROM NORTHWESTERN ONTARIO 



about 1.2 mm wide and long; petals oblong to narrowly obovate, obtuse, 

 6-7 mm. long, rather widely spreading; filaments dilated below; anthers 

 about 3 mm. long, distally mucronate, light yellow, the tubes nearly 

 I mm. long, curved, orange-colored and obliquely porous; style stiff, 

 strongly declined and curved, about 7-8 mm. long, dilated above into 

 a ring wider than the length of the stigma. Fruit not seen. 



Growing among huckleberry bushes on the sand of open Banksian 

 pine woods (barrens) at Slate River Station, Canadian Northern Ry., 

 about ten miles west of Fort William, Ontario, O. E. & G. K. Jen- 

 nings, July 4, 1913, No. 3378. Type consists of three specimens on one 

 sheet in the Carnegie Museum Herbarium. 



At first glance the inflorescence suggests Pyrola chlorantha, but in 

 the character of the leaves, more or less acute to both ends, the re- 

 semblance is rather with the plants known as P. picta Smith and P. 

 dentata Smith, lacking however, the mottling of the former, and not 

 conspicuously wider above the middle as in the latter. P. chlorantha 

 var. saximoniana Femald (Rhodora 22: 49-53, March, 1920) is closely 

 related but appears from a study of a specimen from Leigh's Lake, 

 Wyoming {Merrill C" Wilcox, No. 11 20), to have thicker, more broadly 

 rounded calyx lobes and more deeply colored petals than in var. revoluta. 

 The leaves of var. revoluta superficially resemble quite closely those of 

 Pyrola secunda var. obtusata Turcz. 



Ledum groenlandicum Oeder. 



Throughout almost the whole region covered in our investigations 

 this plant shows considerable variation, yet the limits of this variation 

 scarcely permit one to subdivide the species even into well-defined 

 varieties. The rather concise description of the North American 

 species of Ledum in Small's treatment in the North American Flora 

 (Vol. XXIX, 1919, pp. 36-38) apparently draws the limits of L. groen- 

 landicum too close. Instead of acute or acutish sepals the material 

 from northwestern Ontario has rounded sepals, as indeed has also the 

 material of this species in the Herbarium of the Carnegie Museum 

 from a number of localities from northeastern North America, so that 

 apparently this does not constitute a difi"erence between L. groenlandi- 

 cum and L. pacificum Small. The number of stamens per flower 

 varies indefinitely from 5 to 9, and the capsules vary in the same manner 

 from oval or ovoid to oblong-cylindric, from subacute to obtuse, and 

 from 4.5 to 6.5 mm. long. These limits of variation show a distinct 

 trend in one direction towards L. pacificum Small, reported from Sitka 

 and Japan, and a slight trend towards L. decumhens (Alton) Loddiges 

 of more distinctively arctic regions, but there seems to be little indica- 

 tion of any well-defined form or variety in the material thus far studied. 



Scutellaria lateriflora Linnaeus. 



Falls of the English River, Jarvis Lake, Hunt, C. G. Ry., Ontario, 

 O. E. &G. K. Jennings, No. 15,272, August 26, 191 7; Black ash swamp 

 at upper end of Pelican Lake, Sioux Lookout, O. E. & G. K. Jennings, 

 No. 7,436, Sept. 5, 1914. Specimens in Carnegie Museum Herbarium. 



