112 DICOTYLEDONOUS PLANTS. 



** Leaves often incised or lobed. 



5. C. pyrjfolia Ait. : thorny or unarmed ; leaves ovate-elliptic, in- 

 cisely serrate, somewhat plicate and hairy ; calyx villous ; segments 

 linear-lanceolate, serrate ; flowers trigynous. 



HAB. Rocky woods. Penn. to Car. W. to Michigan. June. 

 1?. Leaves large, acute or acuminate at each end. Corymbt 

 many-flowered. Peduncles and calyx tomentose. 



6. C. glandulosa WUld. : thorny ; leaves obovate-wedgeform, smooth 

 and shining ; petioles, stipules and calyx glandular ; fruit oval, 5- 

 seeded. 



HAB. Can. and Alleghany mountains. May. J>. Fntit middle 

 sized, scarlet. 



7. C. coccinea Linn. : thorny ; leaves on long petioles, ovate, sub- 

 cordate, incisely lobed and serrate, glabrous ; petioles and calyx pubes- 

 cent and glandular ; flowers pentagynous ; petals orbicular. 



HAB. Woods. Can. to Car. May. >>. A large shrub. Learcs 

 on long petioles, often subcordate.. FUncers in corymbs, white. 

 Fruit large, red, eatable. Thorn-bush. 



8. C. cor data Ait. : thorny ; leaves cordate-ovate, pinnatifid, lobed 

 and angled, smooth ; petioles and calyx without glands ; flowers pen-: 

 tagynous ; fruit small, globose, depressed. C. pupvlifolia Pursh. 



HAB. Banks of streams. May, June. *?. A large shrub. 

 Leaves with 3, 5 or 7 lobes. Corymb compound. Fruit red. 



9. C. oxycantha Linn. : leaves obovate-wedgeform, nearly entire, 

 trifid or lacinate, glabrous or shining; flowers in corymbs, 1 3 gynous; 

 calyx without glands, acute. 



HAB. Roadsides, &c. N. S. June. *>. A shrub 810 feet 

 high. Flowers white. Fruit red, small. This thorn is prefer- 

 red in England for hedging. Introduced. Hawthorn. Quickset. 



2. AMELANCHIER. DeCand. 



Calyx 5-cleft. Petals lanceolate. Stamens many, rather 

 shorter than the calyx. Ovary with 10, or 5 bipartite, cells. 

 Styles 5, somewhat united at base. Fruit, when mature, 

 3 5-celled. 



1. A. botryapium De Cand. : unarmed; leaves cordate, oval, conspi- 

 cuously acuminate, pubescent when young, smooth when mature : 

 flowers in loose racemes, appearing before the leaves ; calyx pubes- 

 cent ; petals linear-lanceolate. Aronia botryapium Pers. Pyrus botry- 

 apium Linn. Pursh. MespUus canadcnsis var. cordata Mich. 



HAB. Rocky woods. Can. to Car. May. *>. A small tree. 

 Floicers large, white. Fruit dark purple. 



Service-berry. Shad-bush. 



2. A. ovalis De Cand. : leaves roundish-elliptical, acute, smooth 

 when mature ; flowers in compact racemes ; petals obovate ; germs 



