618 NORTH AMERICAN FLORA [ VoLUME 22 
the back, tomentose on the margins and within, caudate-attenuate, in fruit erect and persistent; 
petals obcordate, about 1.5 cm. long; styles distinct, persistent, not exserted; achenes inserted 
both in the bottom and on the sides of the hypanthium. 
‘Type collected west of Holbrook, Arizona, July 10, 1896, Myrtle Zuck (in herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Arizona and western New Mexico. 7 
83. Rosa manca Greene, Pittonia 4: 11. 1899. 
Stem low, 2-10 dm. high, reddish-brown, terete, armed with rather few, curved prickles 
3-5 mm. long and flattened at the base; stipules adnate, usually narrow, about 1.5 cm. long, 
glandular-denticulate on the margins; petiole and rachis more or less glandular; leaflets mostly 
7, rarely 2 cm. long, oval or obovate, thin, more or less double-toothed with gland-tipped 
teeth, glabrous on both sides; flowers solitary, 1-3 cm. long, glabrous; hypanthium glabrous, 
globose, in fruit about 1 cm. thick; sepals ovate-lanceolate, caudate-attenuate, about 1.5 cm. 
long, glabrous or sparingly glandular, tomentose on the margins, often with lateral lobes, in 
fruit erect and persistent; petals rose-colored, 1.5—2 cm. long; styles persistent, distinct, not 
exserted; achenes inserted both in the bottom and on the sides of the hypanthium. 
TYPE LOCALITY: West Mancos Canyon, Colorado. , 
DISTRIBUTION: Colorado, eastern Utah, and northeastern Arizona. 
84. Rosa pinetorum A. Heller, Muhlenbergia 1: 53. 1904. 
Stems slender, erect, sparingly branched, 6-8 dm. high, usually armed with numerous 
bristles and weak prickles, especially below, and stouter infrastipular prickles, which are often 
1 em. long, straight, terete or slightly flattened below; floral branches about 1 dm. long, prickly 
but rarely bristly; stipules short, adnate, about 1 cm. long, mostly dilated, more or less glandular 
on the back, conspicuously glandular-ciliolate; rachis and petiole glandular-hispid and some- 
times prickly, reddish; leaflets 5—7, orbicular or round-oval, 1-3 cm. long, glabrous or nearly 
so above, slightly pubescent and sparingly glandular on the veins, more or less double-serrate 
with gland-tipped teeth; flowers commonly solitary; petioles glabrous, about 2 cm. long; 
hypanthium globose, glabrous; sepals lanceolate, caudate-attenuate, about 2 cm. long, purplish, 
glabrous or slightly glandular on the back, villous on the margins and tomentose within; 
petals deep rose-colored, about 2 cm. long, obcordate; styles distinct, persistent, not exserted. 
TYPE LOCALITY: Pacific Grove, California. 
DISTRIBUTION: Vicinity of Monterey Bay, California. 
85. Rosa calvaria Greene, Leaflets 2: 257. 1912. 
Stem rather tall, slender, loosely branched, armed with straight, slender, infrastipular 
prickles 3-8 mm. long, terete or slightly flattened below; branches purple, with a bloom; 
leaves usually 7-foliolate; stipules small and narrow, about 1 cm. long, densely glandular, 
free lobes lanceolate, or subulate, more or less spreading, entire; petioles and rachis glandular- 
puberulent and with a few week prickles; leaflets broadly rounded-obovate or suborbicular; 
double-toothed, with gland-tipped teeth, 1-2.5 cm. long, minutely soft-puberulent and con- 
spicuously glandular-puberulent on both sides, paler beneath; flowers corymbose; hypanthium 
glabrous, globose; sepals linear-lanceolate, caudate-attenuate, about 15 mm. long, glandular- 
puberulent without, tomentose within; petals obovate, about 1 cm. long. 
TYPE LOCALITY: Calaveras Big Tree Grove, California. 
DISTRIBUTION: Southern Sierra Nevada, California. 
86. Rosa bidenticulata Rydberg, sp. nov. 
A slender shrub; branches greenish-brown, armed with small weak straight infrastipular 
prickles 3-4 mm. long, or sometimes unarmed; stipules short, adnate, glandular-pruinose and 
glandular-ciliate, the free portion ovate; rachis and petiole glandular-pruinose; leaflets mostly 
5, rounded-oval, sessile, rounded at the apex, glabrous above, glandular-pruinose, but not 
pubescent, and paler beneath, glandular double-dentate, the primary teeth very broadly ovate; 
flowers solitary; hypanthium subglobose, acutish at the base, with a short neck, glabrous, in 
