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 ) . 



j 2 Acute or apiculate, glandular serrate, infolded lengthwise; pit 



nearly smooth CHICKASAW PLUM (Prunus augustifolia ) . 



i 2 Lance-ovate, rounded or tapering b., long-acuminate, closely glandular 

 serrate, firm; mid-rib hairy bn. 



WILD GOOSE PLUM (Primus hortulana). 

 is Ovate-oblong, 



j 2,1/2-5 in., veins strongly impressed ab. and prominent bn.; rounded 



or obtuse b. 

 k Sharply and sometimes doubly serrate; stems mostly glandless. 



AMEBICAN WILD PLUM (Prunus Americana). 

 k 2 Bluntly serrate; stems with glands near blade. 



CANADA PLUM (Prunus nigra). 

 j- l l /2~3 in. long, thick and firm; fr. blue-black or purple with 



bloom; leaves with 

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



ALLEGHANY SLOE (Primus Alleghaniensis) . 

 k2 Cuneate b., wrinkled; fr. %-l in., blue with bloom. 



GARDEN PLUM (Prunus domestica). 

 h 2 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). 

 k2 Leaves thickish and little if at all drooping; fr. tart. 



SOUR CHERRY (Prunus Cerasus) . 

 j 2 Sharply and evenly serrate; fr. in racemes, about % in. and 



astringent CHOKE CHERRY (Prunus Virginia na } . 



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 ) . 

 i 2 With rufous hairs bn. on midrib and principal veins; petioles little 



if at all winged RUSTY NANNYBERRY (Viburnum rufidulum). 



h 2 Acuminate, rounded b., black-dotted beneath; petioles slightly winged. 



NORTHERN NANNYBERRY (Viburnum Lcntayo). 



