DICOTYLEDONS. 105 



[Most of the cultivated roses have many of the stamens 

 transformed into petals, forming what are known as double 

 flowers. A large portion of those commonly found in gar- 

 dens are hybrids of several Asiatic species.] 



1. R. SETiGKRA IMichx. Climijing Rose. Stem long, climbing 

 or reclining, somewhat prickly but not bristly ; leaflets o-5, ovate, 

 aciite» sharply serrate, smooth and shining above, stipules nan-ow ; 

 petioles and peduncles somewhat glandular-pubescent ; flowers in 

 terminal corymbs, red or piidv, 2-3 in. wide ; calyx glandular, 

 sepals finally deciduous ; styles cohering in a coluum ; fruit glo- 

 bose, smooth or sliglitly glandular. May-June. Borders of swamps. 

 Often cultivated. 



2. R. nuMiLis Marsh. Pasture Rose. Stem erect, branched, 

 usually armed with stout stipular prickles and with bristles, but 

 sometimes nearly smooth, 1-3 ft. tall ; leaves mostly 5-foliate, 

 stipules entire ; leaflets oblong-lanceolate or oval, shining above, 

 pale beneath, sharply serrate ; flowers solitary or 2-3 together, 2-3 

 in. broad, pink ; peduncles and calyx glandular-pubescent ; calyx 

 lobes foliaceous, spreading, finally deciduous ; styles distinct ; fruit 

 globose, hispid. I\Iay-June. On dry soil ; our most common wild 

 rose. 



3. R. uuiu(;iNOSA L. Sweetbkier. Stem erect or curving, 

 armed with stout recurved prickles ; leaves 5-7-foliate ; leaflets 

 broadly oval, coarsely serrate, glandular-hispid beneath, aromatic : 

 flowers usually solitary, white or pink ; sepals widely spreading, 

 deciduous ; fruit obovate, sliglitly hispid. May-June. Conunon in 

 cultivation. 



4. R. LAEVIGATA Michx. CnEROKEE RosE. Stem long, diffuse 

 or trailing, armed with very stout recurved prickles ; leaves mostly 

 3-foliate, persistent ; leaflets smooth and shiny, lanceolate, hispid 

 below along the mid-rib, stipules deciduous ; flowers solitary, large, 

 white ; calyx very bristly ; fruit globose. April-May. Conunon in 

 cultivation and alonir fences. 



57. pomace;e. applk family. 



Trees or shrubs ; leaves alternate, petiolate, stipulate, pin- 

 nately veined, or pinnately compound; flowers perfect, regu- 

 lar, solitary or clustered ; calyx 5-i)arted, its tube coherent 

 with the ovary; petals 5; stamens usually numerous, both 

 petals and stamens inserted on the tube of the calyx; styles 



