540 



ROSACEAE 



lA. Styles connate above, usually exserted from the calyx-tube. 



2A. Stipules pectinate; leaflets usually pubescent beneath 1. R. miiltiflora 



2B, Stipules entire or toothed; leaflets usually glabrous, rarely pubescent on nerves beneath; styles usually hairy. 



3A. Leaflets 5-7, the terminal one often larger than the others, acute to caudately acuminate, ovate to ovate-elliptic or broadly lanceo- 

 late, 2—10 cm. long; stipules entire or nearly so. 



4A. Leaflets 5-10 cm. long; stipules entire; flowers 4-5 cm. across; calyx-segments 12-20 mm. long 2. R. sambucina 



4B. Leaflets 1-4 cm. rarely to 5 cm. long; stipules often with few teeth; flowers 2-3 cm. across; calyx-segments 5-12 mm. long. 



3.R. luciae 

 SB. Leaflets 5-9, nearly uniform in size, elliptic to obovate-orbicular, obtuse to rounded or acute, lustrous and deep green above; 



stipules toothed 4. i?. wichuraiana 



IB. Styles free. 



5A. Calyx-tube without prickles; leaflets 5-9. 



6A. Branches and prickles hairy; leaves rugose or minutely bullate above, glandular-dotted beneath 5. R. rugosa 



6B. Branches and prickles nearly or entirely glabrous. 



7A. Branches with flat stipular prickles; leaflets glandular-dotted beneath; calyx-tube globose 6. R. davurica 



7B. Branches without stipular prickles; leaflets not glandular-dotted; calyx-tube fusiform T. R. aclcularis 



5B. Calyx-tube densely prickly; leaves 9- to 17-foliolate 8. i?. hirtula 



1. Rosa multiflora Thunb. R. polyantha Sieb. & Zucc; 

 R. wichurae C. Koch; R. multiflora var. tkunbergiana Thory 



^No-iBARA. Erect branching shrub with prickles on the 



spreading rather stout usually glabrous branches and petioles; 

 stipules green, membranous, short-pubescent and glandular- 

 pilose, the free portion filiform at apex; leaflets 5-7, rather 

 membranous, ovate, obovate or oblong, green, 2-4 cm. long, 

 obtuse to acute, dull, nearly glabrous on upper side, paler and 

 usually with short soft pubescence beneath, the petioles short- 

 pubescent; panicles many-flowered, erect; flowers white, 2-3 



cm. across, the pedicels often with short stipitate glands. 



May-June. Hokkaido, Honshu, Shikoku; common. 



Var. adenochaeta (Koidz.) Ohwi. R. adenochaeta Koidz.; 



R. polyantha var. adenochaeta (Koidz.) Nakai Tsukushi- 



IBARA. Leaflets large, 3-7 cm. long, subcoriaceous, less 

 prominently pubescent beneath; inflorescence with prominent 

 stipitate glands 1-2 mm. long; flowers rose, 3-4 cm. across. 

 ^Kyushu (Higo, Satsuma, and Hyuga Prov.). 



Rosa pulcherrima Koidz. is an alleged hybrid of No. 1 

 and No. 3. 



2. Rosa sambucina Koidz. R. moschata sensu auct. Ja- 



pon., non Mill. Yama-ibasa. Shrub; branches glabrous 



with recurved flat prickles; stipules membranous, entire, 

 slightly glandular on margin, the free portion linear; leaflets 

 5, subcoriaceous, broadly lanceolate to narrowly ovate-oblong, 

 (3-) 5-10 cm. long, 1-2.5 cm. wide, long-acuminate, glabrous, 

 pale beneath; flowers 5-20, in corymbs or flat-topped panicles, 

 white, 4-5 cm. across, the pedicels 3-5 cm. long, loosely short- 

 glandular-pilose; calyx-tube loosely glandular-pilose, the styles 



hairy. May-June. Honshu (s. part of centr. distr. and 



western Kinki Distr.), Shikoku, Kyushu; rare. 



3. Rosa luciae Fr. & Rochebr. R. luciae var. oligantha 

 Fr. & Sav.; R. oligantha (Fr. & Sav.) Koidz.; R. jranchetii 

 Koidz. O-Fuji-iBARA. Nearly glabrous shrub with elon- 

 gate branching stems with rather flat prickles; stipules mem- 

 branous, entire, slightly glandular on margin, the free portion 

 short, filiform; leaflets 5, sometimes 7, rather thin, slightly 

 lustrous on upper side, paler beneath, the terminal ones ovate 

 to narrowly so, 2-4 cm. long, 1-2 cm. wide, acuminate to 

 long-acuminate, the lateral ones acute to acuminate, the lowest 

 pair often smaller; inflorescence a corymb, usually eglandular, 

 the pedicels 6-10 mm. long; flowers few, 2-3 cm. across, 



usually white. May-June. Thickets in low mountains; 



Honshu (Kanto and Tokaido Distr.) . 



Var. onoei (Makino) Momiyama. R. onoei Makino; R. 

 ha\onensis var. onoei (Makino) Koidz.; R. si\ohiana Koidz.; 



(?) R. fujisanensis var. setifera Koidz.; (?) R. ya\ualpina Na- 

 kai & Momiyama Nioi-ibara. Resembles the typical phase, 



the leaflets beneath and leaf-rachis pubescent. Honshu 



(centr. distr. and westw.), Shikoku, Kyushu. 



Var. hakonensis Fr. & Sav. R. jasminoides Koidz.; R. 



oligantha var. jasminoides (Koidz.) Koidz. Mori-ibara. 



Leaflets thin, glabrous, whitish beneath, the terminal ones 

 ovate to broadly so, acute to abruptly acuminate; flowers 1 or 

 2. May-June. Honshu (Kanto Distr. and westw.), Shi- 

 koku, Kyushu. 



Var. fujisanensis Makino. R. fujisanensis (Makino) Ma- 

 kino Fuji-ibara. Leaflets (5-)7, paler beneath, glabrous 



or nearly so, the lateral ones slightly smaller, the terminal one 

 subcoriaceous, ovate to elliptic-ovate, 1.5-2.5 cm. long, 1-1.5 



cm. wide, acute or subacute; flowers few. June-July. 



Honshu (Sagami, Suruga, and Kai Provs. and westw.), Shi- 

 koku. 



Var. paniculigera (Makino) Momiyama. R. paniculigera 



Makino; R. franchetii var. paniculigera (Makino) Koidz. 



Miyako-ibara. Stipules nearly entire, glandular on margin, 

 membranous, the free portion broadly lanceolate, acuminate; 

 leaflets 5-9, nearly equal, 1-2.5 cm. long, 7-15 mm. wide, 

 slightly or scarcely lustrous above, glabrous, whitish beneath, 

 the terminal ones elliptic to obovate-elliptic or oblong-ovate, 

 obtuse to abruptly acuminate, the lateral ones obtuse to 

 rounded; inflorescence usually panicled, glabrous or more 

 often glandular-pilose, few- to many-flowered; flowers white, 



2-3 cm. across. May-June. Honshu (centr. distr. and 



westw.), Shikoku, Kyushu. 



4. Rosa wichuraiana Crep. R. luciae sensu auct. Ja- 

 pon., pro parte; R, tsusimensis Nakai; R. luciae var. yo\o- 

 scensis Fr. & Sav.; R. yoI{pscensis (Fr. & Sav.) Koidz.; R. 

 ampullicarpa Koidz.; R. wichuraiana var. ampullicarpa 

 (Koidz.) Honda Teri-ha-no-ibara. Shrub with elon- 

 gate, rather stout, prostrate, prickly branches; stipules green, 

 toothed, loosely glandular-pilose, the free portion broadly 

 lanceolate, acuminate; leaflets 5-9, coriaceous, nearly equal, 

 obovate-orbicular, elliptic or broadly ovate, 1-2 cm. long, 8-15 

 mm. wide, obtuse or sometimes subacute, lustrous above, paler 

 beneath, glabrous on both sides; inflorescence a short, gla- 

 brous, few- to many-flowered panicle; flowers white, about 3 



cm. across. May-June. Thickets in lowlands and low 



mountains, especially abundant near seashores; Honshu, Shi- 

 koku, Kyushu. Ryukyus, Formosa, Korea, and China. 



5. Rosa rugosa Thunb. R. ferox Lawrance; R. \amtscha- 

 tica var. ferox (Lawrance) Geel; R. rugosa var. thunbergiana 



