1910] The Ottawa Naturalist. S3 



entire; staminate plants with flowers usually only 5 or 6 in a 

 single terminal cyme; sepals 4. obovate, obtuse, glabrous; 

 stamens about 20; filaments slenderly clavellate, the thickest 

 part not as wide as the short merely oval anthers ; fertile plant 

 bearing a small terminal panicle of 10 to 14 flowers, these with a 

 few stamens and numerous pistils; fruit not seen. 



Vicinity of Balena, Hermitage Bay, Newfoundland, along 

 streams, collected by William Palmer, 7 July, 1903 ; his No. 1398, 

 as in U. S. Herb.; also on rocky banks of Rennie's River, by 

 Robinson and Schrenck, 4 Aug., 1894; their No. 187, as in U. S. 

 Herb, and Canad. Geol. Survey. 



Thalictrum Labradoricum. Stems not tall, stout, hollow, 

 striate-angled, glabrous, or the upper part sparingh^ hirtellous; 

 foliage thin and delicate, that of the lower part of the plant 

 glabrous on both faces, but the upper leaves glabrous above, 

 sparsely pubescent beneath between the veins, not along them; 

 terminal leaflets rarely cuneately, usually subquadratelv some- 

 what obovate, about 1 inch long, |-inch wide just below the 

 lobes, obtuse or subcordate at base, the 3 -lobes neither decidedly 

 obtuse nor very plainly acute, the middle one largest, often itself 

 3-lobed; flowers few, in one or two simple, corymbs of 3 or 4, or 

 even solitary; the staminate very large, ^-inch in diameter, the 

 stamens in no part capillary, their filaments clavellate almost 

 from the base and little thicker even at summit, their greatest 

 breadth not exceeding that of the anthers, these oblong-linear, 

 obscurely mucronulate; fertile flowers with many pistils and 

 usually 6 to 10 stamens; mature carpels gradually narrowed be- 

 low the middle but sessile, thickest a little below the summit, 

 therefore subclavate being only very slightly flattened, sparsely 

 pubescent both at the flowering stage and at maturity. 



Two sheets of specimens of this are before me, one belonging 

 to the U. S. National Herbarium, consisting of two staminate 

 plants and one fruiting one. These were collected in "Labrador " 

 by W. E. Stearns in ^1875. The other sheet is No. 4,335 of the 

 Canadian Geol. Survey. This contains the upper portions of 

 four plants, all fertile, the flowers, though hermaphrodite, con- 

 sisting mainly of pistils. These specimens are from thickets 

 along the Upper West Branch of Hamilton River, Labrador, bv 

 A_. P. Low, 7 July, 1894. Both sheets had been labelled T. 

 dioicum, in either case the result of a mere glance at the plants 

 as small and very few-flowered, without the least attention to 

 the fact that the stamens are all clavate and erect; and, in the 

 living state, they must have been white, and therefore showy. 

 By the large size and the small number of these white- 

 stamened flowers, the plant seems to recall more vividly than 

 any other North American species the T. aquilegifoliunt of 



