Cerasus.] ROSACEA. 



167 



acuminatis 



■Linn, Sp, 



PL p. 534. Mick, Am. v. I, p. 265. Fursk, M. Am. v. 1. p. 308. Torrey, Fl. ofUn. St 

 V, I, p. Ml, De Caiid, Prodr, v, 2. p, 518. 



Hab. Canada. Piirsh. 



Ord. XXIX. ROSACEA. Juss, 

 Trie, I. AMYGDALEiE. Juss, 



1. PRUNUS. Toum. 



I 



Drupa ovata aut ohlonga carnosa glaberriTna, polline cacsio tecta, putamine compresso, 

 utrinque acuto, ad marglnes subsulcato, caeterum laevi. — ^oXm ]\\\\\i}Xi\. convulutiva, Florum 

 pedicelli scepius umhellato-fasciculati \-Jiori, ante aut post folia evoluti, DC, 



1. P. spinosa; ramis spinosis, pedunciilis solitariis, calycibus campanulatis, Ioi)is obtusis 

 tubo longioribus, foliis obovato-ullipticis vel ovatis subtus pubescciitibus argute dupllcatoque 

 dentatis, fructibus globosis. DC, — Linn, Sp, PL p. 681. EngL Bot, t, 842. Purshy Fl, Am, 

 V. 1. p, 333. De Cand, Prodr. v. 2. p, 532. 



Hab, In hedges : introduced from Europe. 



2. CERASUS. Juss. 



Drupa globosa aut basi umbilicata carnosa glaberrinia, polline caesio destituta nucleo 

 subgloboso laevi. — Folia juniora conduplicata. Flores nunc pedicellis \-Jloris e gemma squa- 

 mosa plurimis umhellato-fasciculatis insidentes, et tunc foliis prcecociores, mmc ramosi ter- 

 minales et post folia evoluti. DC, 



Sect, I. Cerasophora. DC. Flores umbellati, pedicellis unijioris e gemmts ortis, 



1, C, pumila; striata, ramis vu-gatis, florlbus subumbellatis pedunculatis, calycibus cam- 

 panulatis brevibus, foliis obovato-oblongis erectis subtus glaucis vix serrulatis glabris, fructu 

 ovato nigro, De Cand. Prodr. v. 2, p. 537. (non Mich, fide Scringe.) — Prunus pumila. 

 Linn. Mant. p, 73. '' MilL Ic. t. 89./ 2." Pursh, FL Am. v. 1. p, 331. Torrey, Fl. ofUn. 

 St V. 1./). 469. 



Hab. Canada. {De Cand.)— As a native of Canada, I am unacquainted with this plant, unless, as 1 sus- 

 pect, it be the same as the Cerasus depressa. My specimens from the Garden of the Horticultural Society, 

 and one from M. Seringe, who prepared the specific characters of the genus in De Candolle's iVodromus 

 Syst Veget., are identical with what I here consider the true depressa. The List-mentioned author roferg 

 the C. pumila of Michaux to C. depressa, and says that it is not the same as the Prunus pumila of Linn.; 

 yet he quotes it under both. He describes the fruit as black, while Torrey and Pursh say it is red. This 

 plant is compared, by some authors, in its general habit, to Amygdalus nanny and such a comparison is 

 equally applicable to C. depressa. The difficulties attending the American spetu-s of this genus can only be 

 removed by carefully studying the plants in a living state, both during the season of the blosiiom :uid the 



fruit. 



2. C. nigra; inermis, umbellis sessilibus paucifloris, lobis calyciuis obtusis, foliis ovatis 

 acuminatis, petiolis biglaudulosis. DC.—'' LoiseL in Duham, ed, nov. v, 3. p, 32." De Cand, 

 Prodr. V. 2. p. 538.— Prunus nigra. Ait, Hort. Kew. v. 2, p. 165. ed, 2. v. 3. p. 198. Sims 

 in Bot. Mag. t. HIT. Torrey, FL of Un. St v. I. p. 469. 



