498 ROSACEAE (ROSE FAMILY) 



taper-pointed, serrate with incurved short and callous teeth, thickisli, shining 

 above ; racemes elongated ; petals obovate ; fruit purplish-black. — Woods, N. S. 

 to Fla., w. to Dak. and Ariz. — Fruit slightly bitter, but with a pleasant vinous 

 flavor. 



2. P. virginiana L. (Choke C.) A tall shrub or small tree, with grayish 

 J)arh-, the inner layers loith a rank disagreeable odor; leaves oval, oblong, or 

 obovate, abruptly pointed, very sharply (often doiibly) serrate icith slender 

 teeth, thin ; petals roundish ; fruit red turning to dark crimson, austere and 

 astringent ; stone smooth. — Nfd. to Ga., and westw. Var. leucocarpa Wats., 

 with short dense racemes and sweeter yellowish fruit, has been found at 

 Dedham, Mass. 



§2. PRUN6PH0RA (Neck.) Endl. Drupe smooth; the stone smooth or 

 somewhat rugged ; floivers (usually white) from separate lateral scaly buds 

 in early spring, preceding or developing loith the leaves; pedicels few or 

 several in simple umbel-like clusters. 



3. P. pennsylvanica L. f. (Wild Red, Bird, Fire or Pin C.) Tree, 0-10 

 m. high, with light red-browai bark ; leaves oblong-lanceolate, 'pointed, finely and 

 sharply serrate, shining^ green and smooth both sides; flowers many in a cluster, 

 on long pedicels ; fruit globose, light red, very small, with thin and sour flesh ; 

 stone globular. — Rocky woods and recent clearings, Lab. to B. C, s. to Pa., 

 Great L. region, centr. la., and along the mts. to N. C, Tenn., and Col. 



4. P. alleghaniensis Porter. (Sloe.) A low straggling shrub or small tree 

 (1-5 m. high), seldom thorny; leaves lanceolate to oblong-ovate, often long- 

 acuminate, finely and sharply serrate, softly pubescent when young, glabrate 

 with age ; fruit globose-ovoid, very dark purple, with a bloom, less than 12 mm. 

 in diameter J stone turgid, a shallow groove on one side and a broad flat ridge 

 on the otlier. — Thickets, s. Ct. (Fames, Graves') to the Allegheny Mts. of Pa. 



5. P. ixsTiTiTiA L. (Bullace P.) Somcwhat thorny ; leaves obovate, 

 mostly obtusish at the apex and narrowed at base, sharply and somewhat 

 doubly serrate, soft-pubescent beneath ; fruit small, globular, black, with a 

 bloom. (P, spinosa, var. Gray.) — Roadsides and waste places, N. E. and 

 perhaps occasionally in the Middle States. (Adv. from Eurasia.) 



6. P. maritima Wang. (Beach P.) Low and straggling (3-15 dm. high); 

 leaves ovate or oval, finely serrate, softly pubescent underneath ; pedicels short, 

 pubescent ; fruit globular, purple or crimson (rarely paler), with a bloom, 13-25 

 mm. in diameter ; the stone very turgid, acute on one edge, rounded and minutely 

 grooved on the other. — Sea-beaches, dunes, etc., s. Me. to Va. 



7. P. angustifblia Marsh. (Chickasaw P.) Scarcely thorny, 2-5 m. high ; 

 leaves membranaceous, elliptic-lanceolate, finely serrulate, glabrous ; fruit glob- 

 ular, red, nearly destitute of bloom, thin-skinned, 12-16 mm. in diameter ; 

 the ovoid stone almost as thick as wide, rounded at both sutures, one of them 

 minutely grooved. (P. Chicasa Michx. ) — Del. to Fla., and westw. to Tex. 

 and Kan. 



Var. Watsbni (Sarg.) Waugh. (Sand P.) Dwarf (1-1.3 m. high); stems 

 much branched and somewhat rigid ; leaves smaller and rather firm in texture ; 

 fruit small, red, thick-skinned. (P. Watsoni Sarg.) — Kan. and Neb. 



8. P. MXhaleb L. (Perfumed C.) Shrub or small tree (7 m. high), 

 glabrous or nearly so ; leaves ovate-orbicular, short-pointed or obtuse, slender- 

 l)etioled, crenulate-denticulate, glandular between the teeth ; flowers corymbose ; 

 fruit ovoid to subglobose, black or nearly so, 7-10 mm. long. — Roadsides, river- 

 banks, open woods, etc., spreading from cultivation, Ct. to Del., and westw. 

 (Introd. from s. Eu.) 



9. P. Gravesii Small. Unarmed shrub, 1-1.3 m. high; leaves obovate- 

 orbicular, finely pubescent on both surfaces, serrate-dentate, rounded or even 

 refuse at the apex, 2-3 cm. in diameter; flowers 1-3 in a fascicle, the pedicels 

 pubescent ; fruit globo.se, bluish-black, 12-15 mm. in diameter ; stone about 9 

 mm. long, subglobose but loith one sharp edge. — Gravelly ridge, Groton, Ct. 

 ( Graves. ) 



10. P. cuneata Raf. Low erect shrub, obscurely puberulent to entirely 



