272 Canadian Record of Science. 



Khamnus Purshiana, DC. 



In woods at Kevelstoke, Columbia River, B.C. (John 

 Macoun.) Eastern limit. 



Acer saccharum, Marshall. 



A. saccharinum, Wang., Macoun Cat. Can. Plants, Vol. I, 

 p. 99 in part. 



A. saccharinum, Wang., var. nigrum, T. & G. ; Macoun 

 Cat. Can. Plants, Vol. I., p. 99. 



Bark gray ; internodes mostly slender and elongated, 

 commonly glossy and reddish.; buds gray, conical, slender 

 and acute ; petioles, little dilated at base, not concealing 

 the mature buds, without stipules ; leaves, thin, typically 

 large (usually 4 to 7 inches broad), Hat, dull, usually light 

 green above, the lower surface grayish, glabrous to pubes- 

 cent, or exceptionally quite hirsute when young, isodiame- 

 tric, truncate at base to slightly cordate with an open 

 sinus, or broadly cuneate, rather deeply 5-lobed, except for 

 some smaller 3-lobed leaves near the ends of the branches, 

 with typically narrow sinuses, the three larger lobes with 

 parallel sides or dilated upwardly and each with a 

 slender apical acumination often sinuously bidentate on 

 the sides, and two similar lateral acuminations, or the 

 lateral lobes merely sinuate on the upper margin, the 

 smaller outermost lobes mostly sinuously 1 to 2 toothed 

 on the lower margin ; fruit, large (6 to 10 mm.), the outer 

 lines of the large wings (8 to 12x16 to 28 mm.), nearly 

 parallel or spreading to something less than a right angle. 



From Nova Scotia to Lake Superior. 



Acer saccharum, var. barbatum (Michx.), Trelease. 



A. saccharinum, Wang.; Macoun, Cat. Can. Plants, Vol. 

 I., p. 99, in part. 



Bark, gray to almost black; internodes often shorter 

 and stouter, commonly dull but reddish ; buds gray, 

 pubescent or dark, conical ovoid, often obtuse ; petioles as 



