102 OKDER 41.- ROSACES. 



g PRUNUS. Dnipe smooth, more or less glaucous with a bloom. Stone smooth, mo 

 or less flattened. Leaves mostly convolute (rolled) in vernation. PLUMS. . .(a; 



a Umbels 2-5-flowered. Leaves conspicuously acuminate No. 1 



a Umbel? 2-6-flowered. Leaves acute or obtuse v Nos. 2, 3, 4 



a Umbels 1-2-flowered. Leaves acute, obovate, or oval Nos. 5, 6 



{ CERASUS. Drupe smooth, without bloom. Stone smooth, globular. 

 Leaves conduplicate (folded 254) in vernation. CHERRIES. . .(6) 



b Flowers in lateral leafless umbels. Drupes small. Native Nos. 7, 8 



ft Flowers in lateral leafless umbels. Drupes large. Exotic Nos. 9, 10 



b Flowers in racemes c terminating the leafy branches Nos. 11, 12 



c in the axils of the evergreen leaves No. 13 



ABMENIACA. Drupe soft-velvety. Stone smooth, compressed. Lvs. 



convolute in bnd, expanding after the flowers. APRICOTS Nos. 14, 15 



| AMYGDALUB. Drupe tomentous or smooth. Stone rugous-furrowed, 

 compressed. Leaves conduplicate in vernation. . .(d) 



d Fruit with a soft juicy pulp. Small trees. PEACH, &c No. 16 



d Fruit with a hard dry pulp. Trees or low shrubs. ALMOND. . .Nos, 17, 18, 19 



1 P. Americana Marsh. Red Plum. Yellow Plum. Somewhat thorny ; Ivs. oblong- 



oval and obovate, abruptly and strongly acuminate, doubly serrate ; drupes roundish 

 oval, reddish orange, with a tough skin. Low woods. 10 15f. May. t 



2 P. maritima Wang. Beach Plum. Lvs. oval or obovate, slightly acuminate, 



sharply serrate ; petioles with 2 glands ; umbels few-flowered ; ped. short, pubescent ; 

 fruit nearly round. Sea beach, Me. to Va. 3 4f. Fruit size of a grape. May. 



3 P. umbellata Ell. Lvs. lanceolate or lance-oval, acute or barely acuminate, ob- 



scurely serrulate ; petioles glandless ; umbels 3-5-flowered, precocious ; fruit oval, 

 small, glaucous, red. Dry soils, South. 10 15f. Fruit pleasant. May. 



4 P. Chicasa MX. Chickaxaiv Plum. Branches spinous; Ivs. oblong-lanceolate or 



oblanceolat". glandular serrulate, not at all acuminate; pedicels short, smooth ; drupe 

 globous. Thickets. South. 6 12f. Fruit red or yellowish. April. 



it P. splnoaa L. ft. iiitititta. Bullace Plum. Branches thorny ; Ivs. pubescent 

 beneath; obovate-elliptical, varying to ovate, sharply and doubly dentate; umbels 

 1-2-flowered ; fruit globular, black, glaucous. Roadsides. 15 20f. 



6 P. DOMESTICA L. Common Garden Plum. Damson Plum. Branches unarmed ; Ivs. 



oval or ovate-lanceolate, acute ; pedicels nearly solitary ; drupe globons, oval, ovoid, 

 and obovoid. Long cultivated. 15f. Italy. 



7 P. puinlla L. Sand Cherry. Lvs. oblanceolate or obovate, acute, snbserrati, 



smooth, paler beneath ; umbels few-flowered, sessile : drupe ovoid. Shrub trailing in 

 sandy soils. 1 2f. Fruit small, dark red, pleasant. May. 



8 P. Peiinsylvanlca L. Wild Bed Cherry. Lvs. oblong-ovate, acuminate, hnely 



serrate, thin, smooth ; umbels corymbous, with elongated pedicels ; drupe small, 

 ovoid-subglobous. Woods. N. 25f. Bark red-brown. May. 



!) P. AVIUM L. Ox-heart. English Cherry. Branches erect or ascending ; Ivs. oblong- 

 obovate, acuminate, hairy beneath ; umbels sessile, with rather long pedicels ; drupe 

 ovoid-globous, subcordate at base. Gardens, parks. 30 50f. t 



lO P. CERASUS L. Sour Cherry. Large Red. MoreUo, &c. Branches spreading; Ivs. 

 ovate-lanceolate, acute at apex, narrowed at base, nearly smooth ; fls. with short pedi- 

 cels ; drapes giobous. Tree 15 20f. t 



IIP. sc rot in a Ehr. Black or Wild Cherry. Lvs. firm, oval-oblong or elliptic, acu- 

 minate, smooth, shining above, unequally glandular-serrate ; petioles with 2 4 glands ; 

 raceme long ; drupes black. Woods. 50 80f. Bark black. May. 



12 P. Vlrginlaiia L. Choke Cherry. Lvs. smooth, oval or obovate, short-pointed, 

 thin, not shining, with sharp, subulate serratures, veins bearded at base : petiole* 

 with 2 glands ; raceme short. Thickets. 5 20f. Fruit blackish, astringent. May. 



ISP. Carolliilana Ait. Cherry Laurel. Lvs. oblong-oblanceolate, acuminate, on 

 short petioles, entire, coriaceous ; fls. small, in numerous, dense racemes shorter than 

 the leave? : dnijiof persistent, uoisonous. Banks. S. 30 BOf. April. + 



