504 NORTH AMERICAN FLORA [VoLuME 22 
long, rather broad, glabrous and glaucous, glandular-denticulate on the margins, the free por- 
tion ovate or lanceolate, acute, ascending; rachis and petiole glabrous, sometimes glandular; 
leaflets 7-9, obovate, rounded at the apex, acute at the base, short-petioluled, coarsely serrate, 
glabrous and glaucescent on both sides, 2-4 cm. long; flowers corymbose at the end of the 
annual stem and of its branches; pedicels glabrous, 1-3 cm. long, glabrous; hypanthium. 
globose, glabrous, in fruit 12-15 mm. thick; sepals lanceolate, caudate-acuminate, about 2 cm. 
long, sparingly glandular on the back, tomentose on the margins and within, in fruit erect 
and persistent; petals about 2 cm. long, obcordate; styles persistent, distinct, non-exserted; 
achenes inserted both in the bottom and on the sides of the hypanthium. 
Type collected six miles east of Battle River, Saskatchewan, August 15, 1906, Macoun & 
Herriot 70943 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Saskatchewan (and Iowa?). 
39. Rosa arkansana Porter; Porter & Coult. Syn. Fl. Colo. 38. 
1874. 
Rosa blanda arkansana Best, Bull. Torrey Club 17: 145. 1890. 
Rosa Rydbergii Greene, Leaflets 2: 133. 1911. 
Stem erect, 2-4 dm. high, from a rootstock or short caudex, copiously bristly, mostly 
simple, killed back to near the root; stipules adnate, dilated, 1-2.5 cm. long, glabrous or 
nearly so, glandular-toothed and ciliate, sometimes glandular-granuliferous on the back; 
rachis and petiole glabrous or sparingly pilose, sometimes glandular; leaflets 9 or 11, elliptic, 
acute at both ends, 1.5—6 cm. long, glabrous and shining above, wholly glabrous beneath or 
sparingly pilose on the veins, coarsely and sharply serrate; inflorescence corymbose at the 
end of the stem; peduncles 1-3 cm. long, glabrous; hypanthium subglobose, glabrous, without 
a neck, in fruit 12-15 mm. broad; sepals lanceolate, caudate-acuminate, 1—-1.5 em. long, some- 
what glandular on the back, in fruit ascending or erect, persistent; petals obcordate, 2—2.5 cm. 
long; styles persistent, distinct, not exserted; achenes inserted on the bottom and sides of 
the hypanthium. 
TYPE LOCALITY: Banks of the Arkansas near Cafion City, Colorado. 
DISTRIBUTION: Wisconsin and Minnesota to Kansas and Colorado. 
40. Rosa Lunellii Greene, Leaflets 2: 132. 1911. 
Stem erect, simple, 1-3 dm. high, densely bristly, glabrous, terete; sepals adnate, 1—2 cm. 
long, the lower mostly narrow, the upper broad, glabrous or nearly so, sometimes glandular, 
entire or gland-toothed on the margins; petioles and rachis glabrous or sparingly puberulent, 
sometimes glandular; leaflets 7—9, elliptic or oval, serrate, 1—2.5 cm. long, glabrous on both sides 
or sparingly pubescent on the veins beneath, obtuse at the apex, acute at the base; flowers 1-3; 
pedicels 1-2 cm. long, glabrous; hypanthium globose, glabrous, in fruit orange-red and 10—12 
mm. thick; sepals about 15 mm. long, lanceolate, caudate-acuminate, glandular on the back, 
tomentose on the margin and within, in fruit erect and persistent; petals rarely 2 cm. long, 
obcordate; styles persistent, distinct, not exserted; achenes inserted both in the bottom and 
on the sides of the hypanthium. 
TYPE LOCALITY: Border of Devil’s Lake, North Dakota. 
DISTRIBUTION: Manitoba and North Dakota to northern Nebraska. 
41. Rosa suffulta Greene, Pittonia 4: 12. 1899. 
Rosa stricta 8 Borrer; Hook. Fl. Bor. Am. 1: 200. 1832. 
Rosa blanda setigera Crépin, Bull. Soc. Bot. Belg. 15: 33, in part. 1876. 
Rosa arkansana S. Wats. Proc. Am. Acad. 20: 341. 1885. Not R. arkansana Porter. 1874. 
Rosa blanda arkansana Best, Bull. Torrey Club 17: 145, in part. 1890. 
Rosa virginiana arkansana MacM. Metasp. Minn. Valley 304. 1892. 
Rosa pratincola Greene, Pittonia 4:13. 1899. Not R. pratincola A. Br. 1888. 
Rosa arkansana suffulta Cockerell, Bull. Torrey Club 27: 88. 1900. 
Rosa pratincola {. alba Rehder, Mitt. Deuts. Dendr. Ges. 19: 252. 1910. 
Rosa heliophila Greene, Leaflets 2: 132. 1911. 
Rosa pratincola angustiarum Cockerell; Daniels, Univ. Missouri Stud. Sci. 2?: 148. 1911. 
Rosa pratincola setulosa Cockerell; Daniels, Univ. Missouri Stud. Sci. 2?: 148. 1911. 
Rosa heliophila foliosissima Lunell, Am. Midl. Nat. 2: 157. 1912. 
Rosa dulcissima Lunell, Am. Midl. Nat. 2: 287. 1912. 
