2i6 BOTANICAL GAZETTE [march 



OsTRYA VIRGINIANA var. glandulosa, n. comb. — Ostrya virginiana 

 var. glandulosa Spach, Ann. Sci. Nat. II. 16:246. 1841. 



From Quebec and Ontario to southwestern New England and western 

 New York, and in eastern Michigan this is the prevaihng variety. The two 

 forms occur in New Jersey, Pennsylvania, Indiana, northern lUinois, south- 

 western Missouri, Oklahoma, and on the high Appalachian Mountains. 



Betula Eastwoodae, n. sp. — Leaves broad-ovate to elliptic, 

 crenately serrate except at the cuneate base, thick, glabrous, dark 

 green above, pale below, rather conspicuously reticulate venulose 

 especially on the upper side, 2 . 5-3 cm. long and i . 6-2 . 3 cm. wide; 

 petioles slender, glabrous, often tinged with red, 5-7 mm. in length. 

 Staminate catkins usually solitary or in pairs, sessile, 2-3 cm. long, 

 5 mm. in diameter, their scales broadly ovate, acute and apiculate 

 at apex, pubescent, dark red. Pistillate catkins pendulous on 

 peduncles 8-10 mm. long, cylindric, i . 5-2 cm. in length, 6-7 mm. 

 in diameter, their scales longer than broad, the lobes rounded at 

 the narrow apex, ciliate, the lateral slightly spreading, one-third 

 shorter than the terminal lobe. 



A tree rarely more than 6-7 m. tall with a trunk not more than 15 cm. in 

 diameter, covered with close chestnut brown lustrous bark about 5 mm. thick 

 and marked by conspicuous horizontal white lenticels, and slender red branch- 

 lets more or less thickly covered with circular white glands. 



Roadsides, Hunker Creek, Yukon District, /. Macoun, August 4, 1902 

 (no. 54412); swamps in the town of Dawson, valley of the Yukon, British 

 Alaska, forming jungles with Betula glandulosa Michaux, occasional plants of 

 Betula alaskana Sargent, and different willows, Alice Eastwood, May 22 and 

 June 14, 1914 (nos. 88, 271 = 88 type, also nos. 6, 7, 58, 69, 533 = 69, 89, 272-89, 

 102, 282, 381). 



The relationship of this tree is with B. glandulosa Michx., from which it 

 differs in the shape and venation of the leaves, in the pendulous fruiting 

 catkins, and in its arborescent habit. 



Betula commixta, n. hyb. ? {B. alaskana X glandulosa?).— 

 Leaves broadly ovate to elliptic, acute at apex, broad-cuneate or 

 rounded at base, coarsely serrate with blunt or acute teeth, thin, 

 glabrous, smooth, dark green and lustrous above, pale and lustrous 

 below, 3-4.5 cm. long and broad; petioles 1.5 cm. in length. 

 Flowers not seen. Fruiting catkins erect, 2 cm. long, 6-7 mm. in 



