ROSACEAE 195 



PRINSEPIA— con^/wM^^ 



P. utilis. 12. March-April. D. Spines up to 2 long. Ls. ov., lane, 4, toothed, 

 hairless. Fls. \, white, fragrant, in short racemes. Berry |, cylindrical, 

 purple. Himalaya. (Fig. 93 D.) 



PRUNUS. Buds with numerous scales. Ls. alternate or in clusters, simple, 

 toothed, stipulate; leaf-scars broad. Fls. white, pink, or red, K5, C5, A go, Gi. 

 Fruit fleshy, containing one hard stone. 



{a) Fls. in elongated racemes 2 inches or more in 

 length (Laurel Section) 



P. Laurocerasiis. Cherry Laurel. 20. April. E. Ls. oblong, lane, 6, leathery, 

 dark glossy green, finely and distantly toothed, tapering base, hairless, 

 margins slightly recurved. Fls. |, white, in short erect racemes. Fruit \, 

 egg-shaped, black. East Europe, Orient. (Fig. 90 A.) 

 Variety magnoliaefolia. Ls. up to 12x4. 



P. lusitanica. Portugal Laurel. 20. June. E. Branchlets hairless. Ls. oblong, 

 ov., 5, rounded base, dark glossy green above, finely toothed, margins 

 wavy, stalk usually red. Fls. i, white, in long erect racemes. Fruit ^, 

 egg-shaped, dark purple. Spain and Portugal. (Fig. 90 b.) 



P. Padus. Bird Cherry. 50. May. D. Ls. ov., 5, shining green above, 



rounded or broadly tapering base, finely toothed, l.-stalk with glands. 



Fls. I, white, in long drooping racemes with leafy stalks. Fruit ^, round, 



black, calyx deciduous. Europe (including Britain), Asia. (Fig. 90 c.) 



According to Messrs. Stewart & Sons, Wimborne, there are two 



forms, long-racemed and short-racemed. 



P. serotina. Rum Cherry. 100. May. D. Branchlets hairless. Ls. ov., lane, 

 5, glossy above, teeth minute and incurved, often hairy along midrib 

 below. Fls. \, white, in cylindrical racemes up to 6 long. Fruit \, black, 

 calyx persistent. U.S.A. (Fig. 90 e.) 



{h) Fls. in clusters, or short racemes 2 inches or less 



in length 



(i) Fruit without groove or furrow (Cherry Section) 



P. angustifolia. Mountain Cherry, Chickasaw Plum. 10. March- April. D. 

 Branchlets thin, zigzagged, reddish. Ls. lane, i|,. finely and sharply 

 toothed, glossy above, strongly keeled. Fls. \, white, short-stalked, in 

 few-flowered clusters; sepals upright or spreading, hairless. Fruit |, 

 round, red or yellow. North America. (Fig. 91 E.) 



P. Avium {Cerasus Avium, C. sylvestris). Gean, Mazzard, Wild Cherry. 60. 

 May. D. Ls, oblong, ov., 6, unevenly toothed, slender-pointed, hairy 

 on midrib and veins below, stalk with red glands. Fls. i, white, in droop- 

 ing clusters. Fruit f, round, blackish red, sweet. Europe (including 

 Britain), (Fig. 91 a.) 



Variety flore pleno. Double-flowered Cherry. 



P. Cerasus {Cerasus vulgaris). Wild Dwarf Cherry. 20. May. D. Young 

 branchlets hairless. Ls. ov., 3, short-pointed, firm, finely and often 

 doubly toothed, hairless. Fls. i, white, long-stalked, in erect or semi- 



