Rosa engelmanni

Rosa engelmanni S. Wats. Garden & Forest 2: 376. 1889
Rosa acicularis Engelmanni Cr6pin; L. H. Bailey, Cycl. Am. Hort. 1555. 1902.
Stem low, 3-5 dm. high, densely bristly but rarely prickly; floral branches usually also bristly; stipules adnate, rather narrow or the upper more or less dilated, rarely pubescent, but conspicuously glandular-granuliferous and glandular-ciliate, 1-2 cm. long, the free portion usually ovate; petioles and rachis more or less glandular; leaflets 5 or 7, oval, 1-3 cm. long, usually obtuse at the base and acute at the apex, more or less doubly glandular-serrate, shining above, paler beneath, glabrous on both sides, glandular-granuliferous beneath ; flowers usually solitary; pedicels glabrous, 1-2.5 cm. long; hypanthium decidedly ellipsoid or pear-shaped, in fruit 8-10 mm. thick and 12-15 mm. long, with a distinct neck, and tapering at the base; sepals lanceolate, caudate-attenuate, entire, nearly 2 cm. long; tomentose within and on the margins, slightly if at all glandular, in fruit erect and persistent; petals broadly obcordate, about 2.5 cm. long; styles persistent, distinct, not exserted; achenes inserted in the bottom and on the sides of the hypanthium.
Type locality: Empire City, Colorado.
Distribution: North Dakota and southern Montana to Colorado.