Comprehensive Description
(
anglais
)
fourni par North American Flora
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 cm. 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, leaf y-bracted ; petioles glabrous or pruinose, 1-2 cm. 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 bottom and on the sides of the hypanthium.
Type locality: Mountains of Kern County, California. Distribution: Mountains of southern California (to Nevada?).
- citation bibliographique
- Per Axel Rydberg. 1918. ROSACEAE (conclusio). North American flora. vol 22(6). New York Botanical Garden, New York, NY