410 ROSACEiE. Cerascs. 



— This species is wholly unknov/n to us. Elliott compares it with C. 

 Pennsylvanica, whence we suppose it to be a Cerasus. 



4. C. emarginata (Dougl.) : leaves oval or obovate, serrulate, obtuse and 

 often emar^inate, nearly glabrous, biglandular at the base ; corymbs few- 

 flowered, glabrous; segments of the calyx ovate, obtuse, reflexed; drupes 

 globose. — Dougl. ! in Hook. I. c. 



Upper part of the Oregon River, Douglas! Nuttall! — Shrub 4-10 feet 

 high. Fruit somewhat resembling the Garden Cherry {Nutt.), but bitter 

 and astringent. 



5. C. mollis (Dougl.) : leaves oblong or obovate-oblong, mostly obtuse, 

 tomentose-pubescent beneath, serrulate ; corymbs somewhat racemed, 6-6- 

 flowered, tomentose ; segments of the calyx very obtuse, reflexed, shorter 

 than the pubescent tube;" drupes ovoid. — Dougl. ! m Hook. fi. Bor.-Am. 1. 

 p. 169. 



Oregon, common, Menzies ! Douglas! Mr. Tolmie ! Nuttall! — Tree 

 15-25 feet high, with brownish or purplish branches; the younger ones 

 down}^ 



§ 2. Flowers in racemes terminating leafy branches, appearing after the 

 evolution of the leaves : leaves deciduous. — Padus. 



C. C. Virginiana (DC.) : leaves broadly oval or somewhat obovate, with 

 a short abrupt acumination, often subcordate at the base, very sharjily and 

 often doubly serrate with subulate teeth, mostly hairy in the axils of the 

 veins beneath ; petioles with 2 or more glands ; racemes short, erect or 

 spreading; petals orbicular; drupes subglobose, dark red. — Serin ge, in 

 DC. ! prodr. 2. p. 539 (excl. syn. Micfix.) ; Spach ! suite Buff. C. densi- 

 flora & fimbriata, 6jMc/i .' I. c. C. serotina, Lois. ? I. c. ; Hook. ! fl. Bor.- 

 Am. 1. p. 169. C. obovata. Beck. hot. p. 97. Prunus Virginiana, Linn. I 

 spec. 1. p. 473 (r^xcl. syn.) ; Willd. ! spec. 2. p. 986, Sf arh. t. 5, /. 1 ; 

 Gidmp. Otto, Sf Hayne, holz. t. 36. P. rubra. Ait. Kew. {ed. 1.) 2. p. 163. 

 P. serotina, Pursh ! I. c. ; Torr. ! fl. I. p. 468. P. obovata, Bigel. ! fi. 

 Bost. ed. 2. p. 192. P. hirsutus. Ell. sk. 1. p. 541 ? 



p. low; flowers smaller. — P. nana, Du Roi ; Pott! (v. sp. in herb. 

 Willd.) Cerasus micrantha, Spach ! I. c. 



Canada ! and Newfoundland, Hudson's Bay, and near Great Slave Lake, 

 lat. 62° {Richardson !) and Northern States! to Louisiana! April-May. — 

 A small tree or low sbrnb, with grayish bark. Leaves membranaceous, 

 2-3 inches long when full-grown. Fruit about as large as in C. serotina, 

 dark red when' fully ripe, edible but very astringent.— C/^o/t-e-C/ierr?/.— This 

 and the succeeding species are perfectly distinct, and are well characterized 

 by Ehrhart, who first distinguished them. The confusion respecting them 

 has resulted from an error of some of the older authors, and the subsequent 

 transposition of the specific names. The Prunus Virginiana of Linnseus 

 was founded on the present species (the Choke-Cherry), as appeffrs from his 

 description and herbarium : but the synonym adduced from Grono%-ius 

 relates to the succeeding species, that of Plukenet (omitted in ed. 2,) to Ilea 

 Virginica ! and that of Catesby (which Avas aftei-M^ards erased by Linnajus 

 in his own copy of the Species Plantarum) to Cerasus Caroliniana. Mi- 

 chaux having taken the following for the Linnrean species, the present ])lant 

 came to be erroneously called P. serotina by American botanists, applying 

 to it, as if to increase the confusion, the character of WiUdenow's P. sero- 

 tina. It is this species which is so nearly allied to C. Padus of Europe. 



■' 7. C. serotina (DC.) : leaves (rather coriaceous) oval, oblong, or lanceolate- 



