19G ROSACEiE. Cerasos. 



2. Cerasus Pennsylvanica, Loisel. Wild Red Cherry, or Bi7d Cherry. 



Leaves oval or oblong-lanceolate, acuminate, finely and sharply serrate, smooth and shining 

 when old ; umbels somewhat pedunculate and corymbose, many-flowered ; pedicels rather 

 long and slender ; drupe small, ovoid-globose. — Seringe in DC. prodr. 2. p. 529 ; Hook. ft. 

 Bor.-Am. 1. p. 168 ; Torr. ^- Gr. fl. N. Am. 1. p. 409. C. borealis, Michx. ft. I. p. 286 ; 

 Michx.f. sylv. 2. p. 96. t. 90 ; Seringe, I. c. Prunus Pennsylvanica, Linn, suppl. p. 252 ; 

 Ait. Kew. (ed. 1.) 2. p. 165 ; Willd. sp. 2. p. 992 ; Pursh, fl. 2. p. 331 ; Torr.fl. \.p. 168. 

 P. lanceolala, Willd. arh. t. 3./. 1. P. borealis, Pursh, I. c. ; Bigel. fl. Bost. p. 193. 



A tree seldom exceeding 20 or 25 feet in height and 5 or 6 inches in diameter ; the bark 

 reddish, and marked with white dots. Leaves 2-4 inches in diameter, rather thin, acute at 

 the base, often with 2 small glands on the petiole or near the base of the lamina ; the serratures 

 glandular and incurved. Umbels 3 - 6-flowered ; the pedicels about an inch long. Calyx 

 smooth ; segments semiovate, obtuse. Petals obovate. Fruit the size of a large pea, red, 

 austere, scarcely eatable. 



Rocky woods ; rather common throughout the State, except below the Highlands, where 

 it is rare. Fl. May. Fr. July. 



^ 2. Padus, Torr. & Gr. Flowers in racemes terminating leafy branches, appearing after the 



evolution of the leaves : leaves deciduous. 



3. Cerasus Virginiana, DC. Choke Cherry. 



Leaves broadly oval or somewhat obovate, with a short abrupt acumination, very sharply 

 serrate with subulate teeth, mostly hairy in the axils of tiie veins underneath ; racemes short, 

 erect or spreading ; petals orbicular ; drupes subglobose, dark red. — Seringe in DC. prodr. 

 2. p. 539 (excl. syn. Michx.) ; Torr. <^ Gr. fl. N. Am. 1. p. 410. C. serolina, Hook. fl. 

 Bor.-Am. 1. p. 169. C. obovata, Beck, hot. p. 97. Prunus Virginiana, Linn. sp. 1. p. 473 

 (excl. syn ); Willd. sp. 2. p. 896, and arh. t. 5./. 1 ; " Guimp. Gilo <J- Hayne, holz. t. 36." 

 P. rubra, Ait. Kew. {ed. 1.) 2. p. 163. P. serotina, Pursh, I. c. ; Torr.fl. 1. p. 468. P. 

 obovata, Bigel. fl. Bost. j>. 192. 



A shrub or small tree. Leaves 2-4 inches long, membranaceous, the serratures sometimes 

 double, cominonly with several small glands on the upper part of the petiole. Racemes 2-3 

 inches long. Calyx hemispherical ; the teeth very short, obtuse and ciliale. Fruit about the 

 size of a pea, bitter and astringent, scarcely eatable. 



Rocky hill-sides ; rather common north and west of the Highlands. Fl. May. Fr. July 

 - August. 



4. Cerasus serotina, DC. Wild Cherry. Black Cherry. 

 Leaves oval-oblong or lanceolate-oblong, rather coriaceous, acuminate, smooth or bearded 



