FOilACEAE. 179 



4a. EosA HUMiLis viLLOSA Best. M. p. 514. 



^MC^S— Point Pleasant, Dr. Geo. Best (Fr.). 



5. EosA CANiNA L. Dog Rose. M. p. 514. Eoadsides and waste places. 



Summer. 



6. EoSA RUBIGINOSA L. Sweetbrier, Eglantine. M. p. 514. Eoadsides and 



waste places. Early summer. 



EoSA SETiGERA Michx. Prairie Rose. M. p. 513. Escaped from 



cultivation. Early summer. 

 EosA ciNNAMOMEA L. Cin7iamo7i Rose. M. p. 514. Occasionally 



along roadsides. Summer. 



Family 12. POMACE AE L. Apple Family. 



Bipe carpels papery or leathery. 



Cavities of the ovary (carpels) as many as the styles. 



Flesh of the pome with grit-cells. 1. Pyrus. 



Flesh of the pome without grit-cells. 



Cymes simple ; trees. 2. Maltts. 



Cymes compound; shrubs. 3. Aronia. 



Cavities of the ovary becoming twice as many as the styles*. 



4. AmelancMer. 

 Ripe carpels bony. 5. Crataegus. 



1. PYEUS L. 

 1. Pyrus communis L. Pear. M. p. 515. Thickets and woods, escaped 

 from cultivation. Spring. 



2. MALUS Hill. Apple. 



Leaves glabrous when mature. 



Leaves oblong, lanceolate or oval, narrowed ait the base. 



1. M. angustifolia. 



Leaves ovate, cordate or rounded at the base. 2. M. coronaria. 



Leaves persistently pubescent or tomentose beneath. 3. M. Mahis. 



1. Malus angustifolia (Ait.) Michx. M. p. 516. In thickets. Spring. 



Cape May— Cold Spring, C. F. Manderson (Br.). 



2. Malus CORONARIA (L.) Mill. Crab Apple. M. p. 516. Thickets. Spring. 



PMadeip/iio— Wissahickon (Je.), West Philadelphia (Mac). Bucks— 

 Perkasie, Sellersville (Fr.). Delaware— Castle Eock (B. Sm.), Concord 

 (W. Tr.), Painters' Arboretum (Ke.). Chester — {P.). Lancaster — 

 (P.). Daiip/iiri— Harrisburg, Steelton (Wn.). 



Mercer— Trenton (C). /Somerset —Peapack (C). i?w;/<erdon— Hope- 

 well, Pittstown, Eosemont (C). 



New Castle — Stanton, Pencader. Scarce. 



3. MaIiUS Malus (L.) Britton. Apple. M. p. 516. Escaped from cultiva- 



tion. Spring. 



3. AEONIA Medic. Chokeberry. 



Cyme and lower surfaces of the leaves wooly. 1. A. arbutifolia. 



Chines and leaves glabrous or nearly eo ; fruit black or purplish. 



2. A. nigra. 



1. Aronia arbutifolia (L.) Medic. M. p. 517. Swamps and damp thick- 

 ets. Spring. 



