54 The Ottawa Naturalist. [June 



Europe; and it is not at all impossible that some such plant as 

 this, from far northward, may have been Cornut's original 

 T . Canadense, and therefore the original T. Cornuti of Linnaeus. 



Thalictrum tortuosum. Stout, rigid, evidently tall, 

 doubtless a yard high or near it, the stem angled and striate, 

 also minutely appressed-pubescent, the upper and floriferous 

 part more or less tortuous; basal leaves not seen, the largest 

 cauline one sessile, very large, 8 inches long and 10 in breadth, 

 every petiolule and ramification of it singularly tortuous; 

 terminal leaflets an inch long, nearly as broad, of round-ovate 

 contour, cordate at base, at summit variously but always broadly 

 and not deeply lobed, the median lobe often exceeding the 

 others and itself 3-lobed, as often only broader and entire, all 

 lobes very obtuse; lateral leaflets broadly and very obliquely 

 oval when entire, but some larger and with a lobe or two, all 

 leaflets of firm texture, dark blue-green above and with scattered 

 scaberulous hairs, beneath glaucous and thinly tomentulose; 

 flowers of fertile plants in a rather naked but not large terminal 

 panicle, the flowers 25 to 40, the several stamens with long 

 filaments capillary at base, distinctly clavate above the middle, 

 but nowhere of much more than half the thickness of the anthers, 

 these oblong to oblong-linear, mucronulate; carpels numerous, 

 nearly all maturing, small, sessile, scaberulous, their stigmas 

 closely circinate. 



Thickets at Baddeck, Cape Breton Island, Macoun, 28 July, 

 1898. Only the middle and upper parts of one or two plants 

 were collected, all with mainly pistillate flowers, though with 

 several stamens in each flower; but the species is strongly 

 marked by its petioles and petiolules all of which are as contorted 

 as those of a Clematis, and the texture as well as the indument 

 of the leaflet is of a firmness not known in other meadow-rues of 

 the farther North. The circinate character of the stigmas is 

 striking, but occurs in one or more other species. The specimens 

 bear the number 19,006 of the Geol. Survey. 



Thalictrum glaucodeum. Rather slender, 2 feet high or 

 more, with stem strongly striate-angled and glabrous, simple, 

 leafy up to the small and rather naked panicle; leaves rather 

 small and of many small leaflets, the basal not seen, the lower 

 cauline petiolate, the upper sessile, all of firm texture, glaucous 

 on both faces, but beneath almost white with bloom; terminal 

 leaflets shortly and subquadrately obovate, the largest barely 

 f-inch long, ^-inch wide under the lobes, these 3, shallow, much 

 broader than long, rounded, yet abruptely acutish, the base 

 obtuse or subtruncate, the lateral leaflets not much smaller, 

 mainly not very dissimilar, but a few quite small round-oval 

 and entire, all leaflets marked underneath by a few very pro- 



