468 ICOSANDRIA. MONOGYNIA. prunes. 



II. p. 986. Ejusd. Arh. 239. t. 5. f. 2. Pursh FL I. p. 

 330. Elliott <$•/<:. I. p. 551. 



A large tree, much resembling the preceding in its bark and 

 wood. Leaves broad-oval, sometimes obovate, slightly cordate 

 and unequal at the base, thin and membranaceous, with very 

 acute and generally double serratures ; the serratures almost 

 subulate ; petioles with 2, or rarely 4 glands near the lamina, 

 in front. Flowers in long simple racemes; pedicels 2 — 3 lines 

 long. Calyx smooth, with 5 small teeth. Petals nearly or- 

 bicular. Fruii dark red, rather bitter and astringent. 



Hab. In woods j particularly in mountainous situations. June. 



Choke-cherry . 

 This and the preceding species have been confounded by 

 Mi c hauxy and probably by many other Botanists. They 

 are incorrectly d'^scribed both by M^i lldenow and Purs h. 

 In tiie latter species, which has the midrib of the leaves beard- 

 ed, the sesraliires are very acutely and d-jubly serrate ; while 

 they are described in the- bnf)ks as simply serrate ; and, in the 

 former, with the midrib siaked, I have have always found the 

 leaves simply serrate instead of " doubly toothed." 



3. P. cayiadensis L. : flowers in racemes ; leaves decidu- 

 ous, without giands, broad-lanceolate, rugose, pubescent on 

 both sides. Sp. pL 678. Pursh FL I. p. 330. Pluk. 

 Aim. t. 58. f. 5. (fide IVilld.) 



^ranches smooth and even. Leaves without glands on the pe- 

 tiole, acutely serrate, green on both sides, attenuated at the 

 base. Lin. 



Hab. In Pennsylvania. Mu h le n b erg. -\~ 



Tois is a doubtful species, and is supposed by Pursh to 

 be nothing more than P. hiemalis of Mi c hau x. 



* * Peduncles subumbellate or solitary,, 



4. P. pennsylvanica -^ it„: flowers subcorymbed ; pedi- 

 cels elongated; leaves oval-oblong, acuminate, erosely denti- 

 culate, smooth ; petioles with 2 glands ; branches punctate; 

 fruit subobovate, -^it. Kew. II. p. 16,5. IVilld. Spec. IL 

 p. 929. Pursh FL I. p. 331. Cerasus borealis Mich. 

 FL I. p. 286. M ich. f. Arb. II. p. 212. t. 90. Prun, 

 horealis Pursh FLl.cJ VAanceolcUa V/ilUL Jrb. 24.0, 

 t. 3 f. 3. 



A handsome tree from 20 — 25 feet high; branches punctate with 

 whit(? dots. Leaves about 3 inches long, membranaceous, often 

 ovate, erosely serrate, 'slightly pubescent when young, but 

 smooth when old. Corymbs 6 — S-flowered, sessile, sometimes 

 a little elongated, and then appearing racemose ; pedicels an 

 inch and a half or more in length, smooth. Segments of the 

 e^/i/jT ovate lanceolate, obtuse. Petals roundirJu /'V-wzY slightly 

 ovate, red, scarcely edible. 



