Trees, Shrubs and Vines 



36. 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. (Comus 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. (Comus 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 : %'-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. (Crataegus 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. (Crataegus apiifolia.) 

 Leaf: 2-3', simple, alternate, serrate, 5-7-i/«^/K-lobed, 

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

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