Trees, Shrubs and Vines 
in Large-flowered Syringa. (Philadelphus inodorus, var. 
grandiflorus.) 
LEAF: 3'-4', as in 35, but somewhat hairy. FLOWER: as in 
35, but larger, and calyx-lobes longer and tapering. Virginia ; 
cultivated. 
37. Rough-leaved Dogwood. (Cornus asperifolia.) 
LEAF: 2'-4', simple, opposite, entire, ovate, apex pointed, 
quite rough above, downy beneath, branchlets rough. FLOWER : 
p., white, small (petals 4), in broad flat clusters ; May, June. 
Illinois, dry soil. 
38. Stiff Cornel. (Cornus stricta.) 
LEAF: 2'-4', simple, opposite, entire, ovate or long-ovate, 
apex quite tapering, base pointed, smooth. FLOWER: p., white, 
small (petals 4), in loose flat clusters. Virginia, swamps ; 8°-15° 
high. 
39. Dwarf Thorn. (Cratezgus parvifolia.) 
LEAF: %4’-114’, simple, alternate, round-toothed, obovate with 
long, narrow base, thick, glossy above when mature. FLOWER: 
p., white, 1-3-clustered ; May; fruit yellowish. New Jersey and 
south; 3°-6° high; thorny. (PI. III.) 
40. Sloe. Black Thorn. (Prunus spinosa.) 
LEAF: 1'-3', simple, alternate, serrate, long-ovate or elliptical. 
FLOWER: p., white (petals 5, stamens rather numerous), few- 
clustered, before or with leaves ; fruit small, black, witha bloom. 
Maine to Pennsylvania ; thorny. 
41. White Thorn. (Cratzgus spathulata.) 
LEAF: 2'-3', simple, alternate, xound-toothed toward apex, oc- 
casionally lobed, long-obovate, base tapering, thickish, glossy. 
FLOWER: p., white, in large clusters; May ; fruit red. Vir- 
ginia ; 10°-15° high; thorny. 
42. White Thorn. (Cratzegus apiifolia.) 
LEAF: 2'-3', simple, alternate, serrate, 5—7-deeply-lobed, 
roundish. FLOWER: as in41; March, April. Virginia ; thorny. 
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