PART 6, 1918] ROSACEAE 523 
leaflets mostly 7, oval, 1-4 cm. long, serrate with broad teeth, acutish at the apex, rounded at 
the base, short-petioluled, glabrous and green above, finely and densely puberulent beneath; 
flowers corymbose, conspicuously leafy-bracted; pedicels glabrous, slender, 1-2 cm. long; 
hypanthium glabrous, globose, sometimes with a short neck, in fruit about 8 mm. thick; sepals 
lanceolate, caudate-attenuate, often with foliaceous tips, about 1.5 cm. long, glandular-hispid 
on the back, tomentose on the margin and within; petals obcordate, about 15 mm. long; 
styles distinct, persistent, not exserted; achenes inserted both in the bottom and on the sides 
of the hypanthium. 
TYPE LOCALITY: Oregon. 
DISTRIBUTION: British Columbia to Idaho and California. 
ILLUSTRATIONS: Bot. Mag. pl. 6857; Willm. Gen. Rosa pl. on 227. 
Rosa Eastwoodiae X pisocarpa. Resembles R. pisocarpa in habit, but the sepals are broader 
and the hypanthium has a more distinct neck. Sisson, California, August 26, 1907, J. G. Jack. 
Rosa gymnocarpa X pisocarpa. ‘This has the habit of R. gymnocarpa and the fruit of R. piso- 
carpa; the leaves resemble those of the former, but are puberulent beneath. Siskiyou Mountains, 
Oregon, 1904, Rehder. 
Rosa nutkana X pisocarpa. See under R. nutkana. 
Rosa pisocarpa X Spaldingii. See under R. Spaldingii. 
101.. Rosa salictorum Rydb. Bull. Torrey Club 44: 77. 1917. 
Stem slender, 3-5 m. high or in open places lower, unarmed or nearly so except the new 
shoots, which are bristly at the base; infrastipular prickles seldom present; leaves 5—7-foliolate; 
stipules adnate to the petioles, 1.5—-2 cm. long, the upper dilated, more or less toothed, finely 
puberulent; petioles and rachis unarmed, puberulent; leaflets broadly oval, coarsely and evenly 
serrate, thin, equally green on both sides, glabrous above, finely puberulent beneath, rounded 
or acute at both ends, 2—4 cm. long; flowers corymbose, conspicuously leafy-bracted; pedicels 
glabrous; hypanthium glabrous, globose, contracted above, in fruit about 1 cm. broad; sepals 
lanceolate, caudate-acuminate, about 15 mm. long, glabrous on the back, tomentose within 
and on the margins, erect and persistent in fruit; petals pink, about 15 mm. long; styles distinct, 
persistent, not exserted. 
TYPE LOCALITY: Among willows, on Gold Creek, Nevada. 
DISTRIBUTION: Idaho and Nevada. 
102. Rosa ultramontana (S. Wats.) A. Heller, Muhlenbergia 1: 107. 
1904. 
Rosa blanda S. Wats. Bot. King’s Expl. 91, in part. 1871. Not R. blanda Ait. 1789. 
Rosa californica ultramoniana S. Wats.; Brewer & Wats. Bot. Calif. 1: 187. 1876. 
Stem tall, 1-3 m. high, according to Watson even 5 m. high, chestnut-brown, terete, armed 
with straight prickles 5-7 mm. long, somewhat flattened at the base; floral branches 1-2 dm. 
long, often unarmed, often overtopped by long sterile branches; stipules adnate, 1-1.5 cm. 
long, puberulent and often pruinose on the back, usually denticulate, the lower narrow, the 
upper dilated, the free portion lanceolate or ovate, somewhat spreading; leaflets usually 7, oval, 
usually rounded at both ends, serrate with broad teeth, 2—4 cm. long, green and dull on both 
sides, rather firm, glabrous above, puberulent and often also pruinose beneath; flowers corym- 
bose, usually several; bracts foliaceous; pedicels glabrous, 1-2 cm. long; hypanthium globose, 
glabrous, in fruit 8-10 mm. thick; sepals lanceolate, caudate-attenuate, about 1.5 cm. long, 
glabrous or slightly puberulent, but not glandular on the back, tomentose on the margins 
and inside, erect and persistent in fruit; petals obcordate, 1.5 cm. long or a little more; styles 
distinct, persistent, not exserted; achenes inserted both in the bottom and on the sides of the 
hypanthium. 
TYPE LOCALITY: Eastern side of Sierra Nevada. 
; DISTRIBUTION: Montana to British Columbia, northern California, and Nevada, mostly in the 
interior. 
Rosa MacDougali X ultramontana. ‘This resembles R. ultyramontana in inflorescence and leaf- 
form, but the fruit is bristly and the sepals are glandular-hispid on the back. 
