PaRT 6, 1918] ROSACEAE 495 
14. Rosa canina L. Sp. Pl. 491. 1753. 
Rosa flexuosa Raf. Préc. Dec. 35. 1814. 
Rosa Rafinesquiana Tratt. Ros. Monog. 2: 234. 1823. 
Stems branched, upright, terete, 2-3 m. high, armed with uniform, stout, curved, flattened 
prickles 5-10 mm. long; leaves 5—7-foliolate; stipules adnate, mostly dilated, 2-3 cm. long, 
mostly glabrous beneath, glandular-dentate on the margins; petiole and rachis often glandular- 
hispid, otherwise glabrous; leaflets 1-4 cm. long, oval or ovate, acute at the apex, glabrous on 
both sides, shining above, not at all glandular beneath except rarely so on the midrib, sharply 
serrate, occasionally with double teeth; flowers 1—3 together; pedicels glabrous. 1—3 cm. long; 
hypanthium ellipsoid, acute at both ends, glabrous, in fruit orange, red or scarlet, 10-15 mm. 
thick, 15-20 mm. long; sepals lanceolate, caudate-attenuate, 15-20 mm. long, glabrous on the 
back, tomentose within, entire or with linear lobes, in fruit reflexed and deciduous; petals 
about 2 cm. long, pink, obcordate; styles distinct, hairy, persistent, at last slightly exserted; 
achenes inserted both in the bottom and on the sides of the receptacle. 
TYPE LOCALITY: Europe. 
DISTRIBUTION: Roadsides, from Massachusetts to District of Columbia and Tennessee; natu- 
ralized from Europe. 
ILLUSTRATIONS: Fl. Dan. pl. 555; pl. 1695; Engl. Bot. pl. 992; Sv. Bot. pl. 29; Hayne, Arzn. 
Gew. 11: pl. 32; Nouv. Duham. 7: 1. 11; Britt. & Brown, Ill. Fl. f. 1973; ed. 2. f. 2312; Willm. Gen. 
Rosa pl. opp. 379; pl. on 381; A. Dietr. Fl. Boruss. pl. 861. 
15. Rosa Montezumae Humb. & Bonpl.; Redouté, Roses 1: 55. 
1817. 
Rosa canina Montezumae Seringe (Mus. Helv. 1: 22. 1818); DC. Prodr. 2: 614. 1825. 
Bene Tere ona Willd.; (Spreng. Syst. 2: 555, as synonym. 1825) Crépin, Bull. Soc. Bot. Belg. 11: 
Rosa canina Crépin, Bull. Soc. Bot. Belg. 15: 75. 1876. Not R. canina lL. 1762. 
Stem branched, terete, usually unarmed. 1—2 m. high; stipules adnate, 1-1.5 cm. long, 
rather dilated, slightly pubescent, glandular-ciliate; petiole and rachis somewhat pubescent, 
occasionally armed with small hooked prickles; leaves 3—7-foliolate; leaflets oval, acute, slightly 
pubescent or glabrous, acute or short-acuminate, at the apex, more or less doubly serrate, 
1—2 cm. long; flower solitary or few; pedicels short, 1 cm. long, glabrous; hypanthium ellipsoid, 
glabrous; sepals about 15 mm. long, caudate-acuminate, glabrous on the back, tomentose 
within, often lobed; petals pink, 15-18 mm. long; styles distinct, persistent, hairy, scarcely 
exserted; achenes inserted both in the bottom and on the sides of the hypanthium. 
TYPE LocALIty: Mountains bordering the valley of Mexico. 
DISTRIBUTION: Central Mexico. 
ILLUSTRATION: Redouté, Roses 1: pl. opp. 55. 
VII. Carolinae. Upright low species; new shoots usually covered with bristles, older 
stems with paired infrastipular prickles; stipules adnate, the upper often dilated; leaflets 
5-11, usually rather thin; flowers solitary or in few-flowered corymbs; pedicels and hypanthium 
usually more or less glandular-hispid; sepals entire or lobed, reflexed after anthesis, soon 
deciduous; achenes inserted in the bottom of the hypanthium only; styles distinct, barely 
protruding through the mouth of the hypanthium. Native species. 
16. Rosa palustris Marsh. Arbust. 135. 1785. 
Rosa carolina L,. Sp. Pl. ed. 2. 703. 1762. Not R. carolina. 1753. 
Rosa corymbosa Ehrh. Beitr. 4:21. 1789. 
Rosa fragrans Salisb. Prodr. 358. 1796. 
Rosa pennsylvanica Michx. Fl. Bor. Am. 1: 296. 1803. 
Rosa caroliniana Bigel. Fl. Bost. 121. 1814 
Rosa enneaphylla Raf. Préc. Dec. 35. 1814. 
Rosa hudsoniana Thory; Redouté, Ros. 1:95. 1817. 
? Rosa glandulosa Raf. Ann. Gén. Sci. Phys. 5: 214. 1820. 
Rosa elegans Raf. Ann. Gén. Sci. Phys. 5: 214. 1820. Not R. elegans Salisb. 1799. 
Rosa salicifolia Redouté, Roses 3: 121. 1823. 
? Rosa Sprengeliana 'Tratt. Ros. Monog. 2: 163. 1823. 
Rosa elongata Roessig; Steud. Nom. Bot. ed. 2. 2: 468. 1841. 
Rosa hispidocarpa Chabert; Cariot, Etude Fl. Bot. ed. 4. 2: 677. 1865. 
