HOUGH'S AMERICAN WOODS. abcd 4 e*f 



f Drupe with juicy acidulous flesh; leaves alternate; pit of drupe 

 g Bony, hard and 



h Pit more or less flattened and with ventral groove; leaves 

 i Lance-oblong, tapering b., membranaceous, 



j Long-acuminate, light green and sharply serrate; pit deeply 



wrinkled PEACH (Amygdalus Persica). 



j2 Acute or apiculate, glandular serrate, infolded lengthwise; pit 

 nearly smooth CHICKASAW PLUM (Prunus augustifolia) . 



12 Lance-ovate, rounded or tapering b., long-acuminate, closely glandular 



serrate, firm; mid-rib hairy bn. 



WILD GOOSE PLUM (Prunus hortulana). 



13 Ovate -oblong, 



j 2^-5 in,, veins strongly impressed ab. and prominent bn.; rounded 



or obtuse b. 

 k Sharply and sometimes doubly serrate; stems mostly glandless. 



AMERICAN WILD PLUM (Prunus Americana). 

 k2 Bluntly serrate; stems with glands near blade. 



CANADA PLUM (Prunus nigra) . 

 j2 iy 2 -3 in. long, thick and firm; fr. blue-black or purple with 



bloom; leaves with 

 k Rounded or obtuse b.; fr. % in. or less, dark purple. 



ALLEGHANY SLOE (Prunus A lleghaniensis ) . 

 k 2 Cuneate b., wrinkled; fr. %-l in., blue with bloom. 



GARDEN PLUM (Prunus domestica). 

 h2 Pit turgid (nearly subglobose) marginless; leaves 



1 Lance-oblong (occasionally wider) rounded or obtuse b. acuminate 

 j Membranaceous; cherries small, translucent, red, in clusters, and 



very tart PIGEON CHERRY (Prunus Pennsylvania ) . 



j 2 Firm, with glandular incurved teeth; cherries purple-black, in 

 racemes and of pleasant vinous flavor. 



BLACK CHERRY (Prunus serotina). 

 12 Obovate-oblong, rounded or obtuse b. 



j Bluntly and unevenly serrate; fr. single or few in cluster; 

 k Leaves thin and drooping; fr. sweet. 



SWEET CHERRY (Prunus Avium) . 

 k 2 Leaves thickish and little if at all drooping; fr. tart. 



SOUR CHERRY (Prunus Cerasus) . 

 j2 Sharply and evenly serrate; fr. in racemes, about y 4 in. and 



astringent CHOKE CHERRY (Prunus Virginiana) . 



g2 Pit horny and yielding, flat; flesh blackish and sweet; Ivs. opposite, 



finely and sharply serrate. 

 h Acute or obtuse a., tapering b., 

 i Smooth bn.; petioles not winged. 



BLACK HAW (Viburnum prunifolium). 

 12 With rufous hairs bn. on midrib and principal veins; petioles little 



if at all winged RTSTY NANNYBERRY (Viburnum rufidulum). 



h2 Acuminate, rounded b., bl-'^'-Hottrd beneath; petioles slightly winged. 



NORTHERN NANNYBERRY (Viburnum Lentago). 



