524 NORTH AMERICAN FLORA [VOLUME 22 
103. Rosa gratissima Greene, Fl. Fran. 73. 1891. 
Stem erect, much branched, 1-2 m. high, dark-brown, densely armed with straight prickles 
and bristles of various sizes, the largest often infrastipular, often 1 cm. long, terete or nearly so; 
floral branches 1-2 dm. long, usually less prickly, rarely unarmed; stipules adnate, short, 
about 1 em. long, puberulent on the back, but not glandular, entire or dentate, the upper 
dilated, the free portion ovate, somewhat divergent; petiole and rachis puberulent, or pruinose, 
sometimes with a few prickles; leaflets 5—7, oval, acutish, 1-3 cm. long, serrate, glabrous above, 
finely puberulent beneath; flowers corymbose, leafy-bracted; petioles glabrous or pruinose, 
1-2 em. long; hypanthium glabrous, globose, in fruit about 8 mm. thick; sepals lanceolate, 
caudate-attenuate, 1—-1.5 cm. long, glabrous on the back, tomentose on the margins and within; 
petals 1-1.5 cm. long; styles distinct, persistent, not exserted; achenes inserted both in the bot- 
tom and on the sides of the hypanthium. 
TYPE LOCALITY: Mountains of Kern County, California. 
DISTRIBUTION: Mountains of southern California (to Nevada?). 
104. Rosa praetincta Cockerell, Proc. Acad. Phila. 56: 110. 1904. 
Rosa aciculata Rydb. FI. Colo. 191, in part. 1906. Not R. aciculata Cockerell, 1904. 
Stem about 1.5 m. high, dark-brown, armed with rather numerous often bristle-like prickles, 
on the young stem usually scattered, on the branches often infrastipular, terete, 5-8 mm. 
long; floral branches about 1 dm. long, somewhat prickly; stipules adnate, slightly puberulent 
or glabrate, often more or less toothed, 1-1.5 cm. long, the lower narrow, the upper dilated, the 
free portion lanceolate or semilunar; rachis and petiole finely puberulent, usually with a few 
bristle-like prickles; leaflets obovate or rarely oval, very thin, 1-3 em. long, sharply serrate 
with somewhat incurved teeth, acute or cuneate and short-petioluled at the base, green on 
both sides, glabrous above, finely puberulent on the veins and pruinose beneath; flowers 1-3 
together, often leafy-bracted; pedicels glabrous, 1-2 cm. long; hypanthium glabrous, globose; 
sepals lanceolate, caudate-acuminate, glabrous on the back, tomentose and with a few bristles 
on the margins, about 1.5 cm. long, in fruit erect; petals about 2 cm. long, broadly obcordate; 
styles distinct, persistent, not exserted. 
TYPE LOCALITY: [Not given, but by inference] Pecos, New Mexico. 
DISTRIBUTION: Colorado and New Mexico. 
105. Rosa terrens Lunell, Am. Midl. Nat. 2: 155. 1912. 
Stems 1-1.5 m. high, mahogany-brown, copiously armed with mostly straight, strong, 
and more or less flattened prickles, these even better developed on the new shoots (in the 
related species the new shoots are merely bristly); stipules adnate, dilated, glandular-serrate, 
otherwise glabrous or glabrate; petiole and rachis tomentulose, occasionally prickly; leaflets 
5-11, usually 7, dark-green, obovate or oval, obtuse, cuneate at the base, serrate above, 2-3 
cm. long, petiolulate, softly pubescent beneath, glabrous above; flowers solitary, or few, 
corymbose; pedicels short; sepals lanceolate, entire or somewhat lobed, caudate-attenuate, 
glandular-hispid on the back and persistent, erect; fruit globose, 1 em. in diameter; styles not 
exserted. 
TYPE LOCALITY: Plains at Pleasant Lake, Benson County, North Dakota. 
DISTRIBUTION: Known only from the type locality. 
106. Rosa pecosensis Cockerell, Proc. Acad. Phila. 56: 110. 1904. 
Stem usually tall, 1-2 m. high, dark-brown, terete, branched, armed with scattered 
prickles, occasionally infrastipular, 5-8 mm. long; floral branches about 1 dm. long, sparingly 
prickly; stipules adnate, 1-2 cm. long, pubescent, but not glandular on the back, often glandular- 
denticulate, the free portion lanceolate or ovate, often spreading; rachis and petioles puberulent; 
leaflets 5—9, usually 7, broadly obovate, 2—4 cm. long, distinctly petiolulate, coarsely serrate, 
green on both sides, glabrous above, finely and densely puberulent beneath; flowers solitary 
or in pairs; pedicels glabrous, about 2 cm. long; hypanthium globose, glabrous, in fruit about 
