a l) c 2 d 2 e 2 28 



e2 Small trees or tall shrubs with membranaceous leaves; lobes 

 h Doubly serrate; Ivs. 



i Acuminate, 3-lobed at a. only, eastern. 



STBIPED MAPLE (A. Pennsylvanicum) . 

 12 Acute or obtuse, 3-5-lobed, or even 3-parted or 3-foliate, western. 



DWARF MAPLE (A. glabrum). 

 b.2 Coarsely serrate-dentate, pubescent bn. 



MOUNTAIN MAPLE (A. spicatum). 

 b 2 Without \vell-marked blade and petiole (latter present, but very small in 



leaves of Hemlocks) ; 



c LEAVES LINEAR AND IN FLAT -RANKED SPRAYS, 

 d Sessile, 



e Deciduous, soft, light green (those of fruiting-branchlets scale-like) ; fr. sub- 

 globose cones BALD CYPRESS ( Taxodium distichum) . 



e 2 Evergreen, more rigid, dark green ab., whitish and keeled bn., leaving a flat 

 or depressed scar when breaking away from branchlet; cones erect, 2 to 

 314 in. long and falling apart at maturity. 



f Bracts of cone shorter than scales BALSAM FIR (Abies balsamea). 



f2 Bracts longer than the scales, exserted and reflexed. 



FRASER'S FIR (Abies Fraseri). 

 d 2 With very small appressed petioles, 



e Leaves obtuse or rounded a.; cones less than 1 in. and with suborbicular scales 

 which expand but little at maturity HEMLOCK (Tsuga Canadensis) . 



