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pendula.
populifolia.
ntgra.
B E T U L A . Gen. pl. 1C52.
M a s c . Cal. i-phyílus, 3-fidus, 3-ñorus. Cor.
4-paríita.
Fem. Cal. i-phyllus, íub 3-fidas, 2-florus. Sem.
membrana alata.
1. B. foliis deltoidibus acutis dupücato-férratís glabris,
ftrobiiorum fquamis lobis lateralibus rotundatis,
petiolis glabris pedúnculo longioribus.
Betula alba. Sp. pl. 1393;
« ramis adfcendentibus.
Common Birch Tree,
ß Betula pendulis virgulis. Loef. prujf. 26.
Weeping Birch.
Nat. of Britain.
FL July. H. fe ,
2. B. foliis deltoidibus longe acuminatis inæqualiter ferfatis
glaberrimis, ftrobilorum fquamis lobis latera'-
libus fubrotundis, petiolis glabris.
Poplar-leav’d Birch Tree.
Nat. of North America.
Cult. 1750, by Archibald Duke of Argyíe.
Fl.July, H. fe.
3. B. foliis rhombe'o-ovatis duplicato-ferratis acutis fubtus
pubefcentibus baft integris, ftrobilorum fquamis
villofis : laciniis linearibus æqualibus.-
Betula nigra. Sp. pl. 1394.
Black Birch T ree.
Nat. of Virginia and Canada.
Introd. 1736, by Peter Collinfon, Efq. Colllnf. mßi
FL July and Auguft. fj. fe.
B. foliis ovatis acuminatis duplicato-ferratis : venis papyra-
fubtus hirfutis.
Paper Birch Tree.
Nat. of North America.
Cult. 1750, by Archibald Duke of Argyle.
Fl. June. H. fe .
5. B. foliis cordatis oblongis acuminatis ferratis. Sp. pl. lenta*
1394-
Soft Birch Tree.
Nat. of North America.
Cult. 1759) by Mr. Ph. Mjller. Mill. did. edit. 7. n. 3.
Fl. H. fe .
6. B. foliis ovatis acutis ferratis, ftrobilorum fquamis excelfa.
lobis lateralibus rotundatis, petiolis pubefcentibus
pedúnculo brevioribus.
T a ll Birch Tree.
Nat. of North America.
Introd. about 1767, by Mr. James Gordon.
Fl. May. H. fe.
7. B. foliis orbiculatis crenatis. Sp. pl. 1394.
Smooth Dwarf Birch.
Nat. of Scotland.
Fl. May.
nana.
H. fe.
8. B. foliis obovatis crenatis. Linn. mant. \2fa Jacqu. pumila,
hort. 2. p. 56. t. 122.
Hairy Dwarf Birch.
Nat. of North America.
Introd. 1762, by Mr. James Gordon.
Fl. April and May. H. fe .
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