LXIX. i^ETULA^CEJE : BE'tVLA. 



841 



1532. B. nana* 



Synonymcs. B. nSna Suecbrum Eromel. Chi. Goth. 11. ; B. palfistris pamila, &c., Ceh. Act. Suec. 



1732, 3. 

 Engravings. Am. Acad., 1. 1. 1. ; Eng. Bot., t. 2326. ; and our fig. 1532. 



Spec, Char., ^c. Leaves orbicular, crenate, reticulated with 

 veins beneath. A shrab, with numerous branches, slightly 

 downy when young, and beset with numerous, little, 

 round, firm, smooth, sharply crenated leaves, beautifully 

 reticulated with veins, especially beneath ; and furnished 

 with short footstalks, having a pair of brown lanceolate 

 stipules at their base. Catkins erect, stalked, cylindrical, 

 obtuse ; the barren ones lateral, and the fertile ones ter- 

 minal. Scales of the latter 3-lobed, 3-flowered, permanent. 

 Stigmas red. (Smith.) A bushy deciduous shrub. Lapland, 

 Sweden, Russia, and Scotland, in Europe, and Hudson's 

 Bay, and other parts of Canada, in America ; on moun- 

 tains, but almost always in boggy places. Height 2 ft. 

 to 3 ft. ; in British gardens 6 ft. to 8 ft. Catkins whitish 

 green ; April and May. Fruit brown ; ripe in October. 



1'^arieftj. 



a. B. n. 2 stricia Lodd. Cat., ed. 1836, is somewhat more erect in habit 

 than the species. 



c 6. B. (? N.) GLANDULO'SA Michx. The glandular-SrawcAee? Birch. 



Identification. Michx. Fl. Bor. Amer., 2. p. 180. ; Pursh Fl. 



Amer. Sept., 2. p. 622. 

 Engraving. Our fig. IhZZ. from a specimen in the British 



Museum. 



Spec. Char., Sfc. Branches beset with glandular 

 dots, glabrous. Leaves obovate, serrate, quite 

 entire at the base, glabrous, almost sessile. 

 Female catkins oblong ; scales half 3-cleft. 

 Seeds round, with narrow margins. (Wil/d.) A 

 handsome little deciduous shrub. Canada, about 

 Hudson's Bay ; and on the borders of lakes on 

 the high mountains of New Jersey and Pennsyl- 

 vania. Height 2 ft. Introduced ?. 



Corresponds in America with the B. nana of 

 Europe, and probably only a variety of that spe- 

 cies. Catkins whitish ; May. 



1533. S. ( ? n.) glandulosa. 



Leaves large. 



Natives of North America. 



5 7. B. POPULiFoYiA Ait. The Poplar-leaved Birch. 



Identification. Ait. Hort. Kew., 3. p. 336. ; Pursh Fl. Amer. Sept., vol. 2. p. 620. ; Michx. N. 



Amer. Syl., vol. 2. p. 97. 

 Synonymes. B. acuminata Ehrh. Beit. 6. p. 93. ; B. lenta Du Boi Harb. Baum. ed. 1. p. 92. ; white 



Birch and Oldfield Birch, .imer. 

 Engravings. Michx. N. Amer. Syl., 2. p. 97.; Michx. N. Amer. Syl., vol. 2. t. 71. ; and OMc fig. 



1534. 



Spec. Char., Sfc. Leaves deltoid, much acuminated, unequally serrated, quite 

 smooth. Scales of the strobiles having roundish side lobes. Petioles 

 glabrous. ( Willd.) A tree, in every respect closely resembling B. alba, 

 but growing with less vigour, and not attaining so large a size as that spe- 

 cies. Canada to Pennsylvania, in barren rocky woods. Introduced in 

 1750. Flowers greenish white j April and May. 



Varieties. 



, B. p. 2 lacinidta. B. laciniata Lodd. Cat. ed. 1836. Leaves large, 

 shining, and deeply cut. 

 i B. p. 3 pendida. B. pendula Lodd. Cat. ed. 1836. Spray drooping, 

 like that of the weeping variety of the common birch. 



