Trees, Shrubs and Vines 



36. Large-flowered Syringa. (Philadelphus inodorus, var. 

 grandiflorus.) 



LEAF: s'-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 f -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-i5 

 high. 



39. Dwarf Thorn. (Crataegus parvifolia.) 



LEAF : J^'-i^', simple, alternate, round-toothed, obovate with 

 long, narrow base, thick, glossy above when mature. FLOWER : 

 p., white, i-3-clustered ; May ; fruit yellowish. New Jersey and 

 south ; 3-6 high ; thorny. (PI. III.) 



40. Sloe. Black Thorn. (Prunus spinosa.) 

 LEAF : i' 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, with a bloom. 

 Maine to Pennsylvania ; thorny. 



41. White Thorn. (Cratsegus spathulata.) 

 LEAF : 2'-3', simple, alternate, round-toothed toward apex, oc- 

 casionally lobed, long-obovate, base tapering, thickish, glossy. 

 FLOWER: p., white, in large clusters; May; fruit red. Vir- 

 ginia ; io-i5 high ; thorny. 



42. White Thorn. (Cratsegus apiifolia.) 

 LEAF : 2'-3', simple, alternate, serrate, 5-7-dkr//j>-lobed, 

 roundish. FLOWER: as in 41; March, April. Virginia ; thorny. 



260 



