622 DICLINIA AMENTACES. Betula: 
B. nigra. Du Hoi harbk. 1. p. 93. Wangh. amer. t. 15. 
. 94. : í 
a. Mich, arb. 2. p. 145. t. 4. 3 
. In Canada and throughout the Allegany mountains, to 
their termination in Georgia. h. May, June. v.v. 
This elegant and large tree is the most interesting of 
this genus, on account of the excellence of its w 
It is known by the name of Mountain Mahogany, 
Black Birch, Cherry Birch, and Sweet Birch. This 
last appellation it has from the sweet scent the branch- 
lets give when bruised, 
pumila. 6. B. ramis pubescentibus impunctatis, foliis orbiculato- 
obovatis petiolatis subtus dense pubescentibus, amentis_ 
` femineis cylindricis —Willd. sp. pl. 4. p. 407 - 
B. nana. Kalm itin. 2. p. 263. : 
Icon. Jacq. hort. vind. t. 122. Du Roi harbk. 1. t. 3. 
Wangh. amer. t. 29. f. 61. : 
In bogs of Canada, and on high mountains of New York 
and Pensylvania, k. May, June, v. v. A low 
shrub, not above two or three feet high, — 
glandulosa. 7,8. ramis glanduloso-punctatis glabris, folis obovatis 
~ ferratis basi integerrimis glabris subsessilibus, amentis 
femineis oblongis, squamis semitrifidis, seminibus or- 
bicalatis angusto«marginatis,— Willd. sp. pl. 4. p. 466. 
In Canada, about Hudson's Bay, and on the borders of 
lakes on the high mountains of New Jersey and Pen- 
sylvania. h.May. v.v. A handsome little shrub, 
not above two feet high. 
8. B. humillima, glaberritha; folis orbiculatis crenatis 
subtus reticulato-venosis, amenti squamis profunde 
3-partitis, laciniis oblongis, seminibus orbiculatis sub- 
apteris.— Willd. sp. pl. 4. p. 465. 
Icon. Ameen, acad, 1. 1. 1. Fl. dan. 91. Pall. jl, ross. 1. 
.. t(.40. Amman. act.9.t.14, — — Momus 
In sphagnous swaihps about Hudson's Bay and other 
parts of Canada, k. April, May, v. s. in Herb. 
Lowe ^ — on k 
&ana. 
695. ALNUS. Willd. sp. pl. 4. p. 334. 
Betula, Gen. pl. 1419. 3 
1. A, foliis subrotundo-cuneatis obtusis subretusis glutinosis, 
axillis venarum subtus villosis, Willd. sp. pl. 4. 
p. 334. xd n 
glutinosa. 
