136 ROSE FAMILY 



Rosa setigera, M i c h a u x 1803 Prairie Rose 



Vines with canes 2-6 m. long, armed with stout, hooked, infra-stipular 

 prickles, 6-8 mm. long, about the same width at the base; leaves with 

 three large leaflets, often with an additional much smaller basal pair, 

 leaflets ovate, sharply double serrate to the base, smooth, glossy, dark 

 green above, paler and smooth or soft pubescent beneath, tip acute, base 

 rounded, upper leaflets 4-7 cm. long, 2.5-4 cm. wide, petiole and rachis 

 prickly, glandular, stipules narrow with sharply acute auricles the pair 

 only about 3 mm. wide, entire except for a row of small glands along 

 the margin ; flowers borne in many-flowered corymbs with narrow lanceo- 

 late bracts, pedicels, receptacles and calyx glandular, sepals 1-1.7 cm. long, 

 the outer ones usually with narrow linear lateral lobes, petals deep pink, 

 changing to nearly white, styles long, cohering in a projecting column, 

 flowers 3-5 cm. across, nearly scentless, calyx deciduous after flowering, 

 fruit globular, about 1 cm. in diameter, achenes pale, angular about 4 mm. 

 long : setigera, prickle bearing. 



Native of the eastern United States, from the gulf states north to 

 Nebraska, Wisconsin, and southern Ontario. Not native of Minnesota. 

 Cultivated occasionally in its typical form and in the double flowered 

 form "Prairie Queen." The canes winter kill in the vicinity of Minne- 

 apolis unless laid on the ground and given a light protection of straw. 

 Flowers in July. 



Rosa multiflora T hun b e r g 1784 Rambler Rose 



Vine with canes up to 3 m. in length, armed with stout curved, infra- 

 stipular prickles about 5 mm. long; leaves with 7-9 leaflets, leaflets lance- 

 olate, simple and sharply serrate, bright green and smooth above, paler 

 and soft pubescent beneath, tip acute, wedge-shaped, base wedge-shaped, 

 upper leaflets 2.5-3 cm. long, about 1.5 wide, rachis and petiole prickly 

 and soft pubescent, stipules narrow, glandular, conspicuously and strongly 

 fringed ; flowers in many-flowered corymbs with lanceolate fringed bracts, 

 the pedicels glandular, receptacle nearly or quite smooth, sepals 5-7 mm. 

 long, glandular, the outer with narrow lateral lobes, petals white or pale 

 pink, styles long and cohering in a column, flowers about 2 cm. across, 

 nearly scentless; sepals deciduous in fruit, fruit globose about 5 mm. in 

 diameter, achenes pale, angular, about 3.5 mm. long : multiflora, 

 many flowered. 



Native of China and Japan. Several double-flowered hybrids of this 

 species are commonly cultivated, the commonest being the "Crimson 



