PRUXTS 



PRUMS 



2x33 



under such names as Persica vulgaris flore albo-plena, 

 flore roseo-plena, flore sattguima plena representing 

 different colors of double-fld. peach, and P. vulgaris 

 foliis purpureis representing the purple- or blood-lvd. 

 peach. One of the best of these fancy forms is var. 

 camelliaeflora, Hort., with its subvar. plena, the former 

 with von- large carmine fls. and the latter with double 

 fls. (Fig.' 2789). There are forms, (var. versicolor) with 

 different colors of fls. on different branches of the same 

 tree; also compact or dwarf, pyramidal, weeping, and 

 purple-lvd. forms. See Peach. 



Yar. nucipersica, Schneid. (Amygdalus Persica var. 

 nucipergica, Linn. Persica nucipersica, Borkh. Persica 

 Ixris, DC. Pritnus Persica var. Ixris, Gray. Amygda- 



- 



3229. Prunus pumila. Sand cherry (XI -2). No. 35. 



ectarina, Ait. Prunus Persica var. necturina, 

 Maxim.). NECTARINE. Fig. 2453, p. 2116. Fr. smooth, 

 usually smaller: Ivs. usually more strongly serrate. 

 The nectarine is said to have sprung from the peach, 

 both through seed- and bud-variation. There are 2 

 types, as in the peach: clingstones or brugnons (Persica 

 ten-is, Risso), and freestones (Persica rudacea, Risso). 

 The nectarine is not generally cult, in this country, 

 although it is popular in Calif. 



Var. platycarpa, Bailey (Persica platycdrpa, Decne.). 

 FLAT PEACH. Fr. much flattened endwise, and scarcely 

 thicker in that direction than the length of the pit 

 or stone, with a calyx-like eye or broken cavity at 

 the top; stone small, flat, compressed, rough, and 

 irregular. China. R.H. 1870:111. Trans. Hort. Soc., 

 Lond. 4:512. Grown in the southern states, where 

 it has given rise to various globular peaches. The 

 Peen-to is a form or variety (Fig. 2784, p. 2493) 

 originated in 1869 with P. J. Berckmans, Augusta, Ga., 

 from seeds sent from Austral., where it was probably 

 intro. from China; on account of its very early bloom- 

 ing, this variety is not grown commercially in any of the 

 regular peach sections of the U. S., as it is very likely 

 to be caught by frosts, nor is the quality superior; for 

 S. Fla. and the tropics, it is of value; the fr. is of 

 medium size, strongly flattened on the ends, greenish, 

 with red cheek, flesh light yellow and of good flavor 

 but with a slight bitter-almond taste, cling, the stone 

 small and flat. 



34. Davidiana, Franch. (Persica Davidiana, Carr. 

 Prunus Persica var. Davidiana, Maxim.). Fig. 3228. 

 Slender willow-like tree: Ivs. narrower and smaller 

 than those of the peach, tapering from near the base 

 into very long acuminate points, very sharp-serrate, 

 light green, willow-like: fls. appearing very early, 1 in. 

 or more across, blush or light pink, solitary, the sepals 

 glabrous: fr. nearly globular, the suture prominent, 

 about 1 in. diam., pubescent, grayish or yellowish; 

 stone small and nearlv spherical, ruminated, free from 

 the whitish dry flesh. China. R.H. 1872, p. 75. G.F. 

 10:503. Gt. 44:1412. G.C. III. 11:529. Var. alba, 

 Bean (var. albiflora, Schneid. Persica Davidiana var. 

 alba, Carr.). Fls. white. Gn. 50, p. 165. G. 28:5. 

 Somewhat grown as an ornamental subject. Hardy in 

 the North, but the fl.-buds are usually killed. It 

 blooms very early, much in advance of peaches. It is 



said to be used in China as stock for many stone-fruits, 

 and tests (particularly as a peach stock) are now under 

 way in this country. 



Subgenus III. CERASUS. Cherries. 



Fr. globular or oblong, not sulcate, glabrous and 

 usually not glaucous, the stone turgid (usually nearly 

 globular), and rarely conspicuously longer than broad 

 and smooth: fls. in umbel-like fascicles (mostly solitary 

 in P. tomentosa), commonly with or immediately pre- 

 ceding the Ivs. 



A. Fls. arising from 2 lateral buds (the central one usually 



a If. -bud or branch-bud) on the previous season's 

 growth, usually appearing in advance of the Ivs., 

 the pedicels having no common peduncle outside or 

 beyond the bud-scales: petiole usually very short: 

 plant dwarf. (Microcerasus.) 



B. Sepals or calyx-lobes reflexed: fls. pediceUed and umbel- 



late, 4 or less (sometimes only 1). 



c. Lvs. entire at base or below the middle, very shaUou-ly 

 serrate toward the apex: fr. black at maturity. 



35. pumila, Li'nn. SAND CHERRY. DWARF CHERRY. 

 Fig. 3229. Decumbent or prostrate at the base when 

 old. but the young growth strictly erect and often 

 reaching 5-8 ft. in height, the slender twiggy growth 

 reddish and glabrous: Ivs. narrowly oblanceolate, 

 acuminate, short-pointed or nearly obtuse, the margins 

 above very closely serrate, dull green above and whitish 

 green beneath: fls. small, in 2-5-fld. umbels, the pedicels 

 slender: fr. nearly globular, purple-black, on slender sts. 

 On sandy and rocky inland shores from E. Que. to 

 Man. and south to the District of Columbia; common on 

 sand-dunes along the Great Lakes. The fr. is small and 

 usually scarcely edible, the flesh being astringent. The 

 species is common on dunes of the Great Lakes. It is 

 in cult, as an ornamental plant, for which it is worthy, 

 although it is much attacked by the twig-blight (caused 

 by the fungus Monilia). There are reputed crosses 

 between this species and native plums. 



36. cuneata, Raf. (P. pumila var. cuneata, Bailey). 

 Fig. 3230. Erect, 1-4 ft.: Ivs. thin, oval, short-obovate 

 or spatulate, strongly toothed, especially at apex: fls. 

 larger. Bogs and cool woods and about lakes in the 

 northern states, and in the mountains as far south as N. 

 C. Not in the trade, so far as known, and not promising 

 horticulturally. 



37. Besseyi, Bailey (P. pumila var. Besseyi, Waugh. 

 P. Rosebudii, Reagan. P. prunella, Daniels). WESTERN 

 SAND CHERRY. Figs. 



3231,3232. Known from 

 P. pumila by its more 

 prostrate habit, Ivs. 

 spreading (more erect in 

 P. pumila), broad and 

 thick, usually elliptic, 

 elliptic-oval, or elliptic- 

 lanceolate: stipules on 

 strong shoots, large and 

 green, serrate: fr. nearly 

 or quite twice larger, on 

 short stalks, usually 

 sweet, in certain selected 

 forms as much as %in. 

 diam. This is the sand 

 cherry of the Plains and 

 the W., ranging from 

 Kans. to Man., and west to Wyo. and Colo. B.M. 8156. 

 The original of the Improved Rocky Mountain cherry, 

 a plant grown for its large sweet fr. Large-fruited 

 forms of this species are much prized on the Plains for 

 pies and other cookery, and the species is promising 

 horticulturally. Many hybrids with other species of 

 Prunus have been secured by Hansen. The species is 

 useful as a stock for certain other cherries, plums, and 



3230. Prunus cuneata (XJi). 

 Xo. 36. 



