168 



ROSACEA. [Cerastts. 



Hab. Canada. Alton. From Fort -William, iu lat. 48°, to the Saskatchawan. Dr.Jlichardson. Drummond. 

 Lake Huron. Dr. I'odd, — Newfoundland. Sir Alexander Cochrane. These specimens entirely agree with 

 those I have received from Mr. Sering-e. The fruit is as larg-e as a moderately sized cherry, and apparently 

 red, hence verj- nearly resembling the Prtams Americana of Marshall and Dr. Darlington, in Ann, of Lye. 

 ofN. H. of N.York, but that has no glands to the petioles. The flowers are considerably larger than in the 

 following species, and the leaves, when the fruit is ripe, more than three inches long. 



3. C Pennsylvanica ; floribus subcorymbosis, pcdicellis longiusculis, foliis ovali-oblongis 

 acuminatis membranaceis glabris quasi eroso-denticulatis basi biglandulosis, fructibus sub- 

 ovatis pusillis rubris carne dulci. De Cand. Prodr, v. 2. p, 539. — Prunus Pennsylvanica. 

 Linn. SuppL p. 252. Pursh^ FL Am, v. 1. p. 331. Rich, in Frankl, \st Journ, ed, 2. p, 18. 

 Torrey^ FL of Un, St, v. I, p, 468. — Cerasus borealis. Mich, Am, v, 1. p, 286. De Carid, 

 Prodr, V, 2. p, 539. — Prunus borealis. Pursh, Fl, Am. v. \, p, 330. Bigel, Fl, Bost ed, 2. 

 p, 193.—" P. lanceolata. Willd. Arb. p. 240, t. 3. / 3." 



Hab. Throughout Canada, as far as the Saskatchawan, and from Newfoundland, (Dr. Morrison,) to 

 Edmonton House in the Rocky Mountains. — Dr. Torrey is surely correct in uniting Cerasus borealis of 

 Michaux with the Prunus Pennsylvanica of Linn. Suppl. Indeed Michaux does not appeal' to have been 

 aware of a P. Pennst/hanica having been published, for he takes no notice of it in his Fl. Bor. Amer. 

 In De Candolle's Prodromus, the C. Pennsylvanica is placed in the division "Jiorihus racemosis" but the 

 flowers are umbellate, as in C. borealis, Mich. 



4. C. depressa; ramis angulatis depresso-prostratis, umbellis paucifloris sessilibus af^ore- 

 gatis, foliis cuneato-lanceolatis rariter serratis glabris subtus glaucis, fructibus ovatis, De 

 Cand, Prodr, v, 2, p, 538.— Pnmus depressa. Pursh, FL Am, v, I, p. 332. BigeL FL Bost. 

 ed, 2. p, 192. Torrey, Fl. of Un, St. v,\,p. 470.— Cerasus pumila. Mich, Am. v.l.p. 332. 

 (non Prunus pumila. Linn.?) — Prunus Susquelianse. Willd, Enum. 519 (fide Seringe,) 



Hab. 



shrub, according 



spreading branches, and growing in sandy ground. The fruit beai-s the name of Sand- Cherries. (Ph.) 



5. C, hyemalis; floribus umbellatis glabris, calycis laciniis lanceolatis, foliis oblongo- 

 ovalibus obovatisve abrupte acuminatis, fructibus subovatis. De Cand. Prodr. v. 2. p, 538. 



Prunus hyemalis. Mich, Am, v. I. p. 284. Pursh, FL Am. v. I. p. 3Sl, Elliott, CaroL 

 V. \. p, 542. 



Hab. Canada. Mich. La Grande Chaudiere. PursJi. MSS.—T\\\s species is unknown to me. The fruit 

 is described as black, astringent, eatable only in winter, and called Black Choke-Cherry. But Dr. Darling- 

 ton doubts if any American Plum is a winter fruit; and he is inclined to think that the P. hyemalis of Mr. 

 Elliott at least is the P. nigra of authors, his P. Americana. 



6. C. Chicasa; ramis subspinescentibus glaberrimis, floribus subgeminis, pedimculis bre- 

 vissimis, calycibus glabris laciniis brevissimis, foliis oblongo-ovalibus acutis acuminatisve, 

 fructibus subglobosis parvis luteis. DC— Mich. Am. v. I. p. 284. De Cand. Prodr, v, 2. 

 p. 538.— Prunus Chicasa. Pursh, FL Am, v.l.p. 332.— P. Insititia. Walt, CaroL 



Hab. La Grande Chaudiere, according to a MSS. Catalogue of Jfr. Pursh, communicated to me by Mrs. 

 Percival. But it is not included in Bigelow's or Torrey's Flora, and seems to be a southern species. Tlie 

 fruit IS said to be yellow, and kno^Ti under the name of Chicasaw Plum. (Ph.)— A plant 1 have received 

 from Dr. Schweinitz under this name, appears to me not diff"erent from C. borealis. 



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