2844 



PRUNUS 



PRUNUS 



the most popular broad-lvd. evergreen plants in Eu., 

 and somewhat planted in the southern states. It is 

 also grown in tubs and used for house-decoration. 

 Some of the forms will stand as far north as Washing- 

 ton, and var. schipkaensis is hardy in Cent. N. Y. 

 When grown in the open, the cherry-laurel should be 

 allowed to ripen its wood thoroughly before winter sets 

 in. Protection from severe winds is always desirable. 

 The plant may be prop, by means of long cuttings of 

 ripe wood; also by layers. Named varieties are worked 

 on common stocks. The cherry-laurel is very variable. 

 Some of the many horticultural forms are as follows: 

 Var. angustifolia, Nichols., Ivs. very long and narrow, 

 and plant hardy as far north as Washington; var. 

 Bertinii, with very broad Ivs.; var. camelliaefolia, 

 Nichols., with recurved Ivs.; var. caucasica, Hort., and 

 var. colchica, Hort., with slender twigs and dark 

 foliage which is gray-green beneath, also hardy; var. 

 japdnica, Hort., a narrow-lvd. form, like var. angusti- 

 folia; var. latifolia, Hort., with broad Ivs., hardy at 

 Washington; var. versaillensis, Hort., also with broad 

 foliage; var. microphylla, Hort., with small, narrow Ivs., 

 only 4-5 in. long; var. rotundifolia, Nichols., with 

 short-oblong blunt Ivs. (Gn. 28, p. 405) ; var. parvifdlia, 

 Nichols., Ivs. only 1% in. long and ^in. broad, coarsely 

 serrate: shrub; var. schipkaensis, Spaeth, with small 

 nearly or completely entire Ivs. dark green above and 

 very light green beneath, shrubby, hardy in N. Y. 

 (R.H. 1905. p. 409. G.W. 5, p. 177, var. schipkaensis 

 /abeliana); var. variegata, Nichols., Ivs. marbled or 

 blotched with dull white. 



79. caroliniana, Ait. (Prunus sempervirens, Willd. 

 Cerasus caroliniana, Michx. Padus caroliniana, Mill. 

 Laurocerasus caroliniana, Roem. WILD ORANGE. 

 MOCK ORANGE of the S. Tree, 20^40 ft. : Ivs. oblpng- 

 lanceolate-acuminate, usually entire but sometimes 

 remotely spinose-serrulate, thick, dark green and 

 shining above, the margins usually somewhat revolute: 

 fls. cream-colored, in short rather close racemes, the 

 calyx-lobes with undulate margins: fr. Hin. long, 

 oblong-pointed, black, and shining, persisting for a 

 year. S. C. to Fla. and Texas, in stream-valleys and 

 near the coast. S.S. 4:160. A handsome evergreen, 

 prized for planting in the S. Blooms from Feb. to 

 April. 



80. sphaerocarpa, Swartz (Laurocerasus sphaerocdrpa, 

 Roem.). Small glabrous tree, 30-40 ft.: Ivs. elliptic, 

 2-4 in. long, acuminate, shining, entire, the petioles 

 slender but less than }^in. long: racemes rather dense, 

 shorter than the Ivs., the slender pedicels subtended 

 by deciduous bracts; sepals or calyx-lobes laciniate and 

 acute, deciduous, much smaller than the reflexed white 

 petals which are yellow near base within: fr. nearly 

 globular, pointed at apex, ^-^in. diam., orange. S. 

 Fla., W. Indies, Brazil. 



cc. Calyx-lobes entire. 



81. ilicifdUa, Walp. (Cerasus ilicifolia, Nutt. Lauro- 

 cerasus ilicifolia, Roem.). ISLAY. WILD CHERRY. 

 EVERGREEN CHERRY. MOUNTAIN HOLLY. Evergreen 

 bush or small tree, rarely becoming 30 ft. tall, with a 

 dense crown: Ivs. holly-like, ovate to ovate-lanceolate, 

 obtuse, acute, or sometimes even acuminate, mostly 

 broad and sometimes rounded at the base, the margins 

 coarsely spiny-toothed, the blade thick and shining: 

 fls. white, in slender racemes less than 2 in. long in 

 spring, about ^in. across: fr. rather large (sometimes 

 %in. long), nearly globose, purple or nearly black; 

 stone ovate. San Francisco to Low. Calif. Gn. 3, p. 

 131. S.S. 4:162. G.F. 5:475 (tree). A most worthy 

 garden-plant. 



82. Lyonii, Sarg. (Laurocerasus Lyonii, Eastw. 

 Prunus occidentalis, Lyon, not Swartz. P. ilicifolia 

 var. occidentalis, Brandeg. P. integrifdlia, Sarg., not 

 Walp. P. ilicifolia var. integrifdlia, Sudw.). ISLANDS 



CHERRY. Lvs. longer and more acuminate, usually 

 entire: fr. larger. Islands off the coast of S. Calif. 

 (Santa Cruz and Santa Catalina). S.S. 4:163. Con- 

 sidered to be more desirable as a garden-plant than 

 No. 81. It grows rapidly under cult., making a com- 

 pact very dark green crown. Useful also in pots 

 and tubs. P. occidentalis, Swartz, a different plant, 

 grows from Cuba to Trinidad. It is not in the trade. 

 Grisebach describes it as a high tree: Ivs. oblong or 

 ovate-oblong, rounded at the base, bluntish, with 2 

 glandular spots at the base beneath: racemes lateral, 

 puberulous or glabrous: fr. ovoid, slightly apiculate, 

 nearly 1 in. long, purple. The fr. is said to be "of very 

 fine flavor." 



P. bicolor, Koehne. Allied to P. Padus. Tree, to 40 ft. : branch- 

 lets finely velutinous: Ivs. obovate-oblong, acuminate, subcordate 

 or rounded at base, serrulate, glabrous and whitish beneath, 2-4 in. 

 long: fruiting raceme to 5 in. long: fr. globose, Y&XL. across. W. 

 China. P. conadenia, Koehne. Allied to P. Maximowiczii. Tree, 

 to 30 ft.: Ivs. obovate, acuminate, usually rounded at base, doubly 

 serrate, finally glabrous, \Yr-^>Yi in. long: fls. white, about J^in. 

 across, in 5-8-fld. racemes: fr. ovoid, red. W. China. P. condnna, 

 Koehne (P. Zappeyana, Koehne). Allied to P. lobulata (and has been 

 cult, as P. subhirtella). Shrub, to 15 ft. : Ivs. rhombic-oblong to obo- 

 vate-oblong, acuminate, rounded at the base, doubly incised-serrate, 

 nearly glabrous, 1-3 in. long: fls. white, 1-2, precocious, about Jiin. 

 across; pedicels and calyx glabrous: fr. dark red or black. Cent. 

 China. P. consociifldra, Schneid.=P. salicina. P. cycldmina, 

 Koehne (subgen. Cerasus). Tree, to 25 ft.: Ivs. obovate-oblong, 

 acuminate, rounded at base, sharply simply or doubly serrate, at 

 first sparingly pubescent on the veins, 2-4 in. long: fls. umbellate, 

 3-4, pink, \Ys in. across; sepals reflexed: fr. subglobose, red, Jiin. 

 across. Cent. China. P. dehtscens, Koehne (subgen. Amygdalus). 

 Spiny shrub, to 12 ft.: Ivs. usually fascicled, oblong to oblanceolate, 

 acute or obtuse, cuneate at the base, crenulate, glabrous, Y^-\ Ys in. 

 long: fls. subsessile; sepals roundish: fr. roundish, slightly com- 

 pressed, about Jiin. across, greenish, densely tomentose, finally 

 dehiscent; stone slightly compressed, keeled, slightly rugose. W. 

 China. P. Dielsidna, Schneid. (subgen. Cerasus). Shrub or tree, to 

 30 ft.: Ivs. oblong, abruptly acuminate, cuneate or rounded at the 

 base, simply or doubly serrate, pubescent beneath, 3-6 in. long: fls. 

 umbellate, 3-5, with persistent involucre, white or pink, 1 Y\ in. 

 across; sepals reflexed, oblong to lanceolate: fr. globose, red, Yai. 

 across. Cent. China. P. discadenia, Koehne. Allied to P. Maxi- 

 mowiczii. Shrub or tree, to 35 ft. : Ivs. ovate or obovate, acuminate, 

 usually rounded or cordate at base, unequally serrate, glabrous, 

 2-4 in. long: fls. white, %in. across, in 3-9-fld. racemes: fr. subglo- 

 bose, %in. across. Cent. China. P. glyptocarya, Koehne. Allied 

 to P. lobulata. Tree, to 30 ft.: branchlets pubescent: Ivs. oblong to 

 obovate-oblong, acuminate, usually rounded at base, deeply doubly 

 serrate, pubescent beneath, 2-4 J^ in. long: fls. umbellate: fr. 

 globose, y^\n. across, dark red; stone reticulate and ribbed. W. 

 China. P. Jacquemontii, Hook. f. Allied to P. prostrata. Low 

 shrub, glabrous: Ivs. elliptic-oblong, acute or short-acuminate, 

 cuneate at base, serrate, light green beneath, %-\% in. long: fls. 

 1-3, short-stalked, pink, Hin.' across; calyx tubular: fr. ovoid, 

 J^in. long, dark purple. W. Himalayas. B.M. 6976. P. macro- 

 phyUa, Sieb. & Zucc. Allied to P. Laurocerasus. Evergreen 

 tree, to 30 ft.: Ivs. oblong, acuminate, broadly cuneate at base, 

 serrulate, glabrous, 4-7 in. long: fls. white, in dense racemes 

 \-\Yi in. long: fr. ovoid, Jiin. long. S. Japan. S.I.F. 1-29. P. 

 mira, Koehne. Allied to P. Persica. Tree, to 30 ft. : Ivs. lanceolate, 

 long-acuminate, rounded at base, crenulate-serrulate, villous 

 beneath along the midrib, otherwise glabrous, 2-4 in. long: fr. short- 

 stalked, subglobose, 1 Y in. across, tomentose, edible; stone ovate, 

 compressed, keeled, smooth. W. China. Differs from all peaches in 

 its smooth stone. Hardy at Arnold Arboretum. P. perulata, 

 Koehne (subgen. Padus). Tree, to 40 ft. : Ivs. elliptic to oblanceolate, 

 acuminate, rounded or broadly cuneate at base, serrulate, sparingly 

 pubescent beneath, lYr^Yi in. long: racemes 2-3 in. long, velutin- 

 ous, with a persistent involucre at base, leafless: fr. globose, Kin- 

 across; calyx persistent. W. China. P. pleiocerasus, Koehne. 

 Allied to P. Maximowiczii. Tree, to 25 ft.: Ivs. obovate-oblong, 

 caudate-acuminate, rounded or cuneate at base, unequally serrate, 

 glabrous or nearly so beneath, 1 %-3 1/2 in. long: fls. white, in 4-7- 

 fld. racemes: fr. globose, dark red or black. W. China. P. pleurop- 

 tera, Koehne. Allied to P. lobulata. Tree, to 30 ft.: branchlets 

 hairy: Ivs. obovate to rhombic-oblong, acuminate, usually cuneate 

 at base, incisely doubly serrate, pubescent beneath on the veins, 

 Ji-2J^ in. long: fr. usually solitary, subglobose, J^in. long, black; 

 stone sulcate and foveolate. W. China. P. polytricha, Koehne. 

 Allied to P. Maximowiczii. Tree, to 30 ft.: branchlets villous: Ivs. 

 obovate to obovate-oblong, caudate, usually rounded at base, 

 doubly serrate, pubescent on both sides, 1 ^-3 in. long: frs. 1-2 on 

 a bracted peduncle H-J^in. long, ovoid, red, J^in. long; pedicels 

 villous, about 1 in. long. Cent. China. P. pubigera, Koehne (P. 

 pubigera var. Potaninii, Koehne). Allied to P. Padus. Tree, to 60 

 ft.: branchlets minutely velutinous: Ivs. obovate-oblong, short- 

 acuminate, subcordate or cordate at the base, minutely serrulate, 

 glabrous and whitish beneath, \Yr-4 % in. long; petioles puberu- 

 lous: racemes 3-6 in. long: fr. about Min. across. W. China. Var. 

 Prdttii, Koehne. Lvs. cuneate or rounded at base; petioles gla- 

 brous. Var. obovata, Koehne. Lvs. obovate, rounded at base; 

 petioles glabrous. P. rufomicans, Koehne (subgen. Padus). Tree, 

 to 80 ft.: Ivs. of flowering branchlets lanceolate to oblong-lanceo- 

 late, about 2 in. long, of sterile branches usually obovate, 3^1 in. 



