2984 



ROSA 



c. Branches glabrous: Ifts. 3-5, stipules entire 



or denticulate. 



D. Fls. small, umbellate, yellow or white: 

 pedicels and receptacle smooth: stipules 

 subulate, caducous. 

 Section 4. BANKSIAN^E. Species Nos. 15, 16 



DD. Fls. large, solitary, white: pedicels and 

 receptacle bristly: stipules denticulate. 



Section 14. L^EVIGATJE. Species No. 59 

 cc. Branches tomentose or pubescent: Ifts. 7-9; 

 stipules pectinate: fls. 1 or few, white, with 

 large bracts at the base of the short pedicel: 

 receptacle tomentose. 



Section 13. BRACTEAT*:. Species No. 58 

 BB. Stipules adnate more than one-half of their 



length, 

 c. Receptacle smooth or hispid. 



D. Lvs. of flowering branchlets 3-5-foliolate, 

 large and firm: sts. usually with prickles 

 and bristles: fls. upright, on long pedicels; 

 receptacle bristly; sepals usually pinnate, 

 reflexed after flowering, caducous. 



Section 5. GALLIC*:. Species Nos. 17-21 



DD. Lvs. of flowering branchlets 5-11-foliolate 

 (rarely 8-foliplate, the fls. then short- 

 pedicelled, with smooth receptacle). 

 E. Fls. usually corymbose: if solitary, pedi- 

 cels with 1 or more bracts. 

 F. Sts. with only one kind of prickles, 

 sometimes mixed with glandular 

 bristles: prickles usually hooked, 

 stout, scattered: outer sepals usually 

 pinnate. 

 Section 6. CANINE. Species Nos. 22-27 



FF. Sts., at least at the base, with usually 

 straight often slender prickles and 

 numerous bristles gradually passing 

 into prickles. 



G. Sepals after flowering spreading, 

 usually entire, caducous: infl. 

 usually glandular-hispid: fr. 

 usually hispid, with the achenes 

 only at the bottom. (See Fig. 

 3432, c.) 

 Section 7. CAROLINA. 



Species Nos. 28-32 

 GO. Sepals after flowering upright, 

 usually entire, rarely caducous: 

 fr. usually smooth, with the 

 achenes at the bottom and wall. 

 (See Fig. 3432, a, b.) 

 Section 8. CINNAMOME*;. 



Species Nos. 33-48 



EE. Fls. solitary, without bracts, only occa- 

 sionally corymbose; sepals erect, per- 

 sistent: Ifts. small. 

 F. Petals 5; styles not exserted. 



G. Lfts. usually 9 on the flowering 

 branchlets: prickles straight, 

 usually mixed with bristles and 

 slender: fls. white, pink or yellow; 

 sepals entire. 

 Section 9. PIMPINELLIFOLI*;. 



Species Nos. 49, 50 



GG. Lfts. 5-7 on the flowering branch- 

 lets: prickles usually hooked, 

 rather stout: fls. yellow; sepals 

 pinnate, rarely entire. 

 Section 10. LUTE*;. Species Nos. 51, 52 

 FF. Petals 4, only occasionally 5, white; 

 styles somewhat exserted: Ifts. 7-17. 

 Section 11. SERICE*;. Species Nos. 53, 54 

 cc. Receptacle prickly. 



D. Lvs. on flowering branchlets 3-7-foliolate; 

 Ifts. cuneate-obovate, indsely dentate. 

 Section 12. MINUTIFOLI*;. Species Nos. 55-57 

 DD. Lvs. of flowering branchlets 7-15-foliolate; 

 Ifts. elliptic or elliptic-oblong, sharply 

 serrate. 



Section 15. MICROPHYLL*:. Species No. 60 



Section 1. 

 Section 2. 

 Section 

 Section 

 Section 

 Section 

 Section 

 Section 

 Section 

 Section 10. 

 Section 11. 

 Section 12. 

 Section 13. 

 Section 14. 

 Section 15. 



SUMMARY OF SECTIONS. 



SIMPLICIFOLI*: Species No. 1 



SYSTYL*: Species Nos. 2-10 



INDICJE Species Nos. 11-14 



BANKSIAN*: Species Nos. 15, 16 



GALLIC*; Species Nos. 17-21 



CANINE Species Nos. 22-27 



CAROLINA Species Nos. 28-32 



CINNAMOME*; Species Nos. 33-48 



PIMPINELLIFOLI*: Species Nos. 49, 50 



LUTE*; Species Nos. 51, 52 



SERICE*J Species Nos. 53, 54 



MINUTIFOLI*; Species Nos. 55-57 



BRACTEAT*: Species No. 58 



L*:VIGAT*: Species No. 59 



MICROPHYLL*: Species No. 60 



3434. Section of rose flowers. To show two 

 forms of styles. ( X 1 A) 



Subgenus HULTHEMIA. 



Section 1. SIMPLICIFOLLE. Only one Asiatic species, dis- 

 tinguished from all other roses by the simple exstipu- 

 late Ivs. 



1. persica, Michx. (R. simpUcifdlia, Salisb. R. bcr- 

 berifolia, Pall. Lowea berberifolia, Lindl.). Low 

 straggling shrub, 2 ft. high, with slender, prickly 

 branches: Ivs. short-petioled, oval to oblong, acute at 

 both ends, serrate, bluish green, pubescent, %-lK in- 

 long: fls. solitary, yellow, with red eye, about 1 in. 

 across: fr. prickly. June. N. Persia to Siberia. B.M. 

 7096. B.R. 1261. G.C. III. 6:8, 9, 78. W.R. 1. This 



peculiar rose is 

 very rare in 

 cult., since it 

 is very difficult 

 to grow. It has 

 been success- 

 fully cult, in 

 a cool green- 

 house, exposed 

 to the full sun, 

 kept moist dur- 

 ing summer and dry from October to March. The only 

 way to prop, it seems to be by suckers; seeds are occa- 

 sionally intro. from its native country. A hybrid of 

 this species with R. involucrata is R. Hdrdii, Gels., with 

 5-7-foliolate Ivs. and large yellowish white fls., with a 

 deep orange eye. G.C. II. 24:469. Gn. 19, p. 473. 

 P.M. 10:195. W.R. 2. 



Subgenus EUROSA. 



Section 2. SYSTYL*:. A group of about 12 species (one of 

 them American), well nMrked by the styles being con- 

 nate into a slender exserted column. Sts. sarmentose 

 or climbing, with hooked prickles: fls. in corymbs, few 

 or many; outer sepals pinnate, rarely entire, reflexed 

 after flowering, caducous. 

 A. Stipules pectinate: prickles usually in 



pairs 2. multiflora 



AA. Stipules entire or denticulate: prickles 



scattered. 

 B. Habit more or less upright with 



usually arching branches. 

 c. Lvs. of flowering branchlets 3-5- 

 foliolate, pubescent beneath. 

 D. Fls. small, %in. across: Ifts. 



linear-lanceolate 3. Watsoniana 



DD. Fls. 2 in. across: Ifts. generally 



ovate-oblong 4. setigera 



cc. Lvs. of flowering branchlets 5-9- 



foliolate. 



D. Lfts. usually 5-7: corymb panic- 

 ulate: fr. less than Y^in. long, 

 subglobose. 

 E. Under side of Ifts. pubescent: 



prickles hooked 5. Brunonii 



EE. Under side of Ifts. glabrous or 

 a few hairs on the midrib: 

 prickles straight or nearly 



so 6. moschata 



DD. Lfts. usually 7-9: corymb um- 

 bellate: fr. more than Y^in. 

 long, ovoid 7. Helena 



