326 



AMYGDALACEAE. 



VOL. II. 



9. Prunus insititia L. Bullace. Fig. 2417. 



Prunus insititia L. Sp. PI. 475. 1753. 



A much-branched shrub with thorny branches, 

 5-i5 high. Leaves mostly obovate, obtuse at the 

 apex, narrowed or rounded at the base, serrate, 

 nearly glabrous above when mature, pubescent be- 

 neath ; flowers white, about 4"-6" broad, appearing 

 before the leaves, the lateral clusters usually only 

 i-2-flowered ; pedicels i'-i' long ; drupe globose, 

 nearly black with a bloom 6"-io" in diameter ; stone 

 little flattened, acute on one edge, ridged and 

 grooved on the other. 



Along roadsides and waste grounds, New York to 

 Massachusetts. Naturalized or adventive from Europe. 

 April-May. Has been mistaken for P. spinosa L. 



Prunus domestica L., the Garden Plum, a small 

 tree, with larger fruit, flowers and leaves, has locally 

 escaped from cultivation. 



10. Prunus pumila L. Sand or Dwarf 

 Cherry. Fig. 2418. 



Prunus pumila L. Mant. PI. i : 75. 1767. 



Prostrate and spreading or ascending, much 

 branched from the base, sometimes bushy, 6'-6 

 high. Leaves mostly oblanceolate or spatulate, 

 acute or acutish at the apex, narrowed at the 

 base, serrate, especially toward the apex, usually 

 pale beneath and deep green above, glabrous or 

 very nearly so on both sides when mature; flow- 

 ers white, 4"-s" broad, appearing with the leaves 

 in sessile lateral umbels ; clusters few-flowered ; 

 drupe 4"-6" in diameter, dark red or nearly black 

 when mature without bloom ; flesh thin, acid. 



On sandy or gravelly shores, New Brunswick to 

 Manitoba, Maine, New Jersey, Indiana and Wisconsin. 

 April-May. Fruit ripe in August. Beach-plum. 



ii. Prunus cuneata Raf. Appalachian 



Cherry. Fig. 2419, 

 Prunus cuneata Raf. Ann. Nat. n. 1820. 



An erect shrub, i-4 high, the branches often 

 strict, light colored, glabrous or puberulent. 

 Leaves oval, oblong or obovate, obtuse or some- 

 times acute at the apex, narrowed or wedge- 

 shaped at the base, more or less serrate with 

 rather appressed teeth, rather thin, i'-3' long, 

 sometimes nearly i' wide; petioles 4"-io" long; 

 flowers in umbels, appearing with the leaves, 

 about 5" broad ; drupe globose, nearly black and 

 4"-S" in diameter when mature; pedicels i' long 

 or less. 



In wet soil, or among rocks, Maine and New 

 Hampshire to Minnesota, North Carolina and Wis- 

 consin. 



