2996 



ROSA 



ROSA 



Section 11. SERICE.E. Three Asiatic species. Erect shrubs 

 with the prickles in pairs: stipules narrow, with erect 

 dilated auricles: fls. solitary, without bracts; sepals 

 entire, persistent, and upright; petals usually 4! styles 

 somewhat exserted. 



A. Lfts. generally ovate or obovate, 7-11: 



fr. slender-stalked 53. sericea 



AA. Lfts. generally oblong, 9-17: fr. on a 



thickened fleshy stalk y z in. long .... 54. omeiensis 



53. sericea, Lindl. (R. tetrapetala, Royle). Attain- 

 ing 12 ft., with prickly and often bristly branches: Ifts. 

 7-11, oval or obovate, serrate, 

 glandular or silky pubescent 

 beneath, )i-Min. long: fls. 

 white, lJ^-2 in. across; petals 

 usually 4, rarely 5 : fr. globose or 

 turbinate. May, June. Himal- 

 ayas. B.M. 5200. R.H. 1897, 

 pp. 444, 445. J.H. III. 43:7. 

 W.R. 52. 



54. omeiensis, Rolfe. Fig. 

 3456. Shrub, to 10 

 ft. : the young shoots 

 densely bristly: Ifts. 

 9-17, oblong or 

 elliptic-oblong, 

 acutish, cuneate at 

 the base, serrate, 

 glabrous, }i-%in. 

 long: fls. white, over 

 1 in. across; petals 

 usually 4: fr. ellip- 

 soid, M~Min. long, 

 red, borne on a yel- 

 low or red thickened 

 stalk of about equal 

 length. May, June: 

 fr. in July, Aug. W. 

 China. B.M. 8471. 

 A graceful shrub 

 with handsome 

 fern-like foliage, early white fls. and especially attractive 

 in summer on account of the contrasting color of the 

 red fr. and its yellow or red fleshy stalk, a feature 

 which distinguishes it at once from any other cult. rose. 

 Has proved hardy in Mass., while R. sericea is tender. 

 Var. pteracantha, Rehd. & Wilson (R. sericea var. 

 pteracdntha, Franch.). Prickles much enlarged at the 

 base, decurrent and often confluent, forming wide wings, 

 red and translucent on the young shoots. B.M. 8218. 

 G.C. III. 38:260, 261. Gn. 69:300. J.H.S. 27:491. 

 The large wing-like prickles, which are red and translu- 

 cent while young, make this rose a conspicuous and 

 striking object. 



Section 12. MINUTIFOLLE. Three American species. Low 

 shrubs with slender, scattered prickles: Ifts. small, 

 incised-serrate: stipules with dilated and divergent 

 auricles: fls. solitary, without bracts; sepals erect, per- 

 sistent, the outer ones pinnate: fr. prickly. 



A. Lfts. cuneate-obovate: fls. ly^-Sin. 



across. 



B. Branches glabrous: Ifts. usually 5 . . .55. mirifica 

 BB. Branches stellate-pubescent: Ifts. 



usually 3 56. stellata 



AA. Lfts. ovate to oblong: fls. about 1 in. 



across 57. minutif olia 



55. mirifica, Greene. Upright shrub, 3-4 ft.: st. 

 green, glabrous, with slender yellowish white prickles 

 and numerous bristles: Ifts. usually broadly cuneate- 

 obovate, incisely or crenately dentate, the teeth some- 

 times glandular-serrulate, slightly pubescent on both 

 sides or nearly glabrous, light green, yi~%m. long: fls- 

 solitary, deep rose-purple, 1^3 in. across: fr. irregu- 

 larly and broadly turbinate, wrinkled, dull red, prickly, 



3456. Rosa omeiensis. ( X K) 



}^-%m. across. April, May. New Mex., White and 

 Sacramento Mts. This is one of the most beautiful 

 and the most strikingly distinct of the American roses. 

 The fact that it flowers in its native habitat, accord- 

 ing to the writer's observation on the Sacramento 

 Mts., New Mex., freely a second time in Aug. indi- 

 cates a horticulturally valuable trait. Not hardy N. 



56. stellata, Wooton. Upright shrub to 2 ft.: sts. 

 with whitish prickles, densely stellate-pubescent while 

 young: Ifts. usually 3, broadly cuneate-obovate, incisely 

 dentate, pubescent on both sides, somewhat rough 

 above, M~H m - long: fls. solitary, deep rose-purple, 

 1%-2J4 m - across: fr. turbinate, prickly. April, May. 

 New Mex., Organ and San Andreas Mts. J.H.S. 

 27:457. W.R. 103. Not hardy N. 



57. minutifdlia, Engelm. Fig. 3457. Dense shrub, 

 to 4 ft. high: branchlets pubescent with slender brown 

 prickles: Ifts. 5-7, ovate to oblong, incisely dentate, 

 pubescent, J^-J^in. long: fls. short-pediceled, pink or 

 white, about 1 in. across: fr. subglobose, hispid. April, 

 May. Calif. G.F. 1:102 (adapted in Fig. 3457). 

 J.H.S. 27:456. Tender. 



Section 13. BRACTEAT^E. Two Asiatic species. Shrubs 

 with erect or sarmentose and tomentose or pubescent 

 sts.; prickles in pairs: stipules slightly adnate and pec- 

 tinate: infl. with large bracts; sepals reflexed after 

 flowering, entire; receptacle tomentose. 



58. bracteata, Wendl. (R. Macdrtnea, Dum.). 

 MACARTNEY ROSE. Sts. usually procumbent or sar- 

 mentose, villous-tomentose, with stout hooked prick- 

 les: Ifts. 5-9, oval to obovate, crenately serrulate, 

 bright green above and somewhat shining, almost 

 glabrous beneath, Y^-2 in. long: fls. 1 or few, short- 

 stalked, white, 2-2% m - across; sepals and receptacle 

 densely tomentose. June Oct. S. China, Formosa; 

 naturalized in Fla. and La. B.M. 1377. B.B. (ed. 2) 

 2:268. Gn. 70, p. 192. Handsome half-evergreen 

 climber, not hardy N. There is a double-fld. form. 



Section 14. LJEVIGAT^E. One Asiatic species. Climbing 

 shrub, with scattered hooked prickles: Ifts. generally 3; 

 stipules almost free: fls. solitary, without bracts, large, 

 white; sepals erect, entire, persistent. 



59. laevigata, Michx. (R. sinica, Murr. R. chero- 

 kensis, Donn. R. ternata, Poir. R. nivea, DC. R. 

 Camellia, Hort.). CHEROKEE ROSE. Figs. 3458, 3459. 

 High climbing shrub, with slender green prickly 

 branches: Ifts. 3, rarely 5, elliptic-ovate to ovate- 

 lanceolate, sharply serrate, shining and glabrous, 



2 J/2 in. long: fls. solitary, white, rarely rose, 

 in. across, fragrant; pedicels and receptacle densely 

 bristly: fr. large, obovate, bristly. June. China, 

 Formosa, Japan; naturalized in the southern states. 

 B.M. 2847. B.R. 1922. G.C. III. 6:497. Gn. 53, p. 

 207; 60, p. 29; 64, p. 95; 68, p. 206; 71, p. 225. F.S.R. 

 1:294. G. 34:447. M.D.G. 1906:397. Handsome 

 climbing rose, but not hardy N. A hybrid with R. 



3457. Rosa minutifolia. ( X Yi) 



