2834 



PRUNUS 



PRUNUS 



even peaches for cold countries where the trees must 

 be protected. See Hansen, Bull. No. 87, S. Dak. 

 Exp. Sta. (1904), and subsequent bulletins. 



cc. Lvs. usually serrate or crenate to the base, sometimes 

 double-serrate: fr. red. Nos. 39 and 40 are the 

 dwarf or "flowering" cherries of gardens, often 

 confused with the flowering almond (P. triloba) 

 but distinguished by the longer pedicellate fls. 

 which usually are not solitary from the bud. 



38. utahensis, Dieck. UTAH HYBRID CHERRY. 

 Apparently a hybrid of P. angustifolia var. Watsonii 

 and P. Besseyi. A small tree-like bush: Ivs. lance- 

 elliptic to oblong-oval, short-pointed or nearly blunt, 

 finely serrate, slightly conduplicate, glossy above and 

 much reticulated beneath: fr. cherry-like, somewhat 

 larger than that of P. Besseyi (about % or %in. diam.), 

 of deep mahogany-color, with a thin plum-like bloom, 

 a thin flesh and a relatively large cherry-like stone. 

 Appears to have been raised about 50-60 years ago 

 from seed of P. Besseyi (P. Watsonii grew near) by 

 J. E. Johnson, in Nebr. Mr. Johnson subsequently 

 moved to Utah, whence the fr. was distributed. It has 

 little value as a fr.-plant, but it is an attractive orna- 

 mental subject, both in fl. and fr. 



39. jap6nica,Thunb. (P.rwina,Hort.,inpart. P.sinen- 

 sis, Hort., of Amer. gardens). Fig. 3233. Bushy plant, 



rarely over 5 ft. high: Ivs. 

 ovate, ovate-orbicular, or other- 

 wise on the broad order (rarely 

 as narrow as ovate-lanceolate) 

 acuminate or even caudate, 

 not at all inclined to be lobed, 

 coarsely double-serrate or cre- 

 nate, glabrous beneath or short- 

 hairy on midrib and nerves: 

 fls. in 2's and 3's, rose-colored 

 or blush, stalked (the stalks 

 lengthening), appearing with 

 the Ivs. : fr. globular or short- 

 oblong, Hin. diam., smooth 

 and shining, wine-red. Cult, 

 from Japan, but probably 

 native to China. To what 

 extent this species is cult, in 

 this country is yet to be deter- 

 mined. It runs into several 

 well-marked forms. Var. 

 eujap6nica, Koehne. Branches 

 erect and virgate: Ivs. short- 

 and broad-acuminate, the pri- 

 mary teeth short and obtuse 

 but not truly triangular; blade 

 beneath glabrous at maturity 

 or lightly hairy on rib and 

 nerves, rounded at base: fls. 

 simple (not double). Var. 

 gracfllima, Koehne. Branches 

 wide-spreading, the branchlets 

 very slender and somewhat 

 deflexed: Ivs long- and nar- 

 row-caudate, mostly cordate 

 at base, the primary teeth longer and more acute, 

 and exactly triangular: fls. simple (not double), 

 white or rose. Var. Thunbergii, Koehne. Mature Ivs. 

 glabrous beneath: Ivs. long- and narrow-acuminate, the 

 teeth truly triangular: fls. pale rose, on pedicels about 

 Kin- long; petals Kin. long, the stamens shorter; style 

 sparsely pilose at base. Var. Engleri, Koehne. Differs 

 from var. Thunbergii in the mature Ivs. being short- 

 hairy and the midrib and nerves beneath and pedicels 

 twice or more as long (becoming %in. long in fr.): 

 petals Kin. or more long, pale flesh-color; stamens 

 %-%in. long; style glabrous or hairy at base. Var. 

 Kerii, Koehne. Fls. semi-double, the petals numerous; 

 ovaries usually 2: Ivs. glabrous beneath. B.R. 27 and 



3231. Prunus Besseyi 

 No. 37. 



3232. Western sand cherry. Prunus 

 Besseyi (XH). No. 37. 



R.H. 1852: 301 (both as P . japonica) . B.M. 2176 (as 

 Amygdalus pumila). 



40. glanduldsa, Thunb. Fig. 3227. Long confused 

 with P. japonica, but differing markedly in the foliage: 

 Ivs. ovate-oblong, oblong, oblong-lanceolate, or other- 

 wise on the narrow order, little or not at all acuminate 



but gradually taper- 

 ing, widest at or 

 below the middle, 

 closely serrulate or 

 crenate-serrate,some- 

 times in part some- 

 what doubly serrate, 

 glabrous beneath or 

 slightly hairy along 

 the midrib: fls. about 

 2 from the bud, slen- 

 der-stalked (pedicels 

 about ^in- long at 

 anthesis), blush, pink 

 or white. China. B. 

 M. 8260 (as P. japon- 

 ica). P. glandulosa, 

 Torr. & Gray (Amyg- 

 dalus glandulosa, Hook.), the "wild peach," a very dif- 

 ferent plant on prairies in Texas, promising, must take 

 the name P. texana, Dietr. (P. Hookeri, Schneid.). The 

 P. glandulosa, Thunb., assumes many forms. Var. gla- 

 bra, Koehne. Fls. simple or double, white or rose, with 

 glabrous pedicel and style: stipules persistent: If .-blade 

 glabrous both sides or hairy in the axils of veins beneath: 

 young branchlets pulverulent at base. B.R. 1801, (as P. 

 japonica, white-fld.). I.H. 5:183 (as P. japonica flore 

 albo- plena). Var. Purdomii, Koehne, probably not 

 cult.: differs from var. glabra in petioles and pedicels 

 being puberulent: fls. simple; style glabrous. Var. 

 trichostyla, Koehne. Fls. single or double, white or 

 rose, the pedicels glabrous or puberulent, style pilose 

 at base: stipules persistent: young branchlets glabrous 

 or pulverulent: fls. white, about %in. across. Frequent 

 in cult.; it has been described under such names as 

 Prunus sinensis, P. japonica flore-pleno, and Cerasus 

 japonica. The growth is wiry and erect, the branches 

 glossy and purple-brown. Var. salicifolia, Koehne. 

 Stipules deciduous: fls. mostly only 1 from a bud: 

 branches erect and yirgate, to 3 ft. high, glabrous: lf.- 

 blade narrow, or linear-elliptic, acuminate or acute, 

 simply or doubly serrate. Liao-tung Peninsula; proba- 

 bly not cult. P. glandulosa is a common "flowering 

 almond" of American gardens. It is cult, chiefly in two 

 forms, the double white (var. glabra forma albiplena, 

 Koehne), and the double pink 

 (var. trichostyla forma sinensis, 

 Koehne). What other botanical /^/ / 



forms may be in cult, as flowering n\ 



almond needs to be determined. 



41. hum ili s, Bunge. Erect 

 shrub, 1-4 ft. high, with slender 

 dark brown branches: Ivs. 2 in. 

 or less long, elliptic-ovate, some- 

 what acute, short-petioled, ser- 

 rulate, bright green above, lighter 

 colored beneath, the linear stip- 

 ules glandular-ciliate: fls. solitary 

 or in pairs, broadest above the 

 middle, short - peduncled and 

 short-pedicelled, white with red- 

 based petals, Kin. diam., appear- 

 ing with the Ivs.; calyx-lobes 

 oblong, obtuse, and ciliate, as 

 long as the tube; petals twice 

 exceeding calyx-lobes or sepals, 

 orbicular and crenulate: fr. Kin. 



long, ovoid - globose, red. N. 3233. Leaf of Prunus 



China. B.M. 7335. 



japonica (XI). No. 39. 



