ROSE FAMILY 459 



prickles. Stipules glandular-ciliate ; rachis of the leaves pubescent and glandular and often 

 sparsely prickly; leaflets 5-7, usually doubly serrate, densely glandular-pubescent and resinous 

 beneath, very aromatic ; flowers pink to white ; hypanthium smooth or often with a few prickles ; 

 sepals lanceolate, usually laciniately lobed, spreading, deciduous; fruit ovoid, 12-18 mm. long. 



Pastures and waste places; western Washington to northwestern California, especially abundant in western 

 Oregon. Naturalized from Europe. The Eglantine of Chaucer and Shakespeare. May-July. 



2. Rosa nutkana Presl. Nootka Rose. Fig. 2503. 



Rosa nutkana Presl, Epimel. Bot. 203. 1851. 



Rosa anacantha Greene, Leaflets Bot. Obs. 2: 265. 1912. 



Rosa columbiana Rydb. N. Amer. Fl. 22: 514. 1918. 



Stems stout, erect, 0.5-1.5 m. high, usually armed with large paired straight or somewhat 

 curved prickles, the floral branches glabrous or nearly so. Stipules 1-2 cm. long, more or less 

 glandular-dentate ; petioles and rachis more or less puberulent or short-pubescent and often with 

 interspersed stalked glands; leaflets usually 7, 1.5-5 cm. long, broadly ovate, rounded at both 

 ends or acute at apex, doubly serrate, with glandular teeth, dark green and glabrous above, 

 paler and somewhat glandular-puberulent or slightly pubescent on the veins beneath; flowers 

 usually solitary; pedicels glabrous or sometimes glandular-hispid; hypanthium glabrous; sepals 

 lanceolate, 2-3 cm. long, cordate-acuminate, often with foliaceous entire appendages, glabrous 

 or rarely glandular on the back ; petals 25-35 mm. long, broadly obcordate ; hypanthium globose, 

 15-18 mm. broad in fruit. 



Canadian and Transition Zones; Alaska to Wyoming and northern California. Type locality: Nootka Sound, 

 British Columbia. May-July. 



Rosa nutkana var. muriculata (Greene) G. N. Jones, Madrono 3: 128. 1935. Leaflets oval, 15-30 mm. 

 long, doubly serrate, the lower surface with muriculate glands interspersed with the pilose pubescence. Mostly 

 near the coast, Humid Transition and Canadian Zones; British Columbia to Mendocino County, California. 



3. Rosa pinetorum Heller. Pine Rose. Fig. 2504. 



Rosa pinetorum Heller, Muhlenbergia 1 : 53. 1904. 



Rosa Brownii Rydb. Bull. Torrey Club 44: 70. 1917. 



Rosa gymnocarpa var. pinetorum Jepson, Man. Fl. PI. Calif. 500. 1925. 



Stems erect, slender, 0.5-1 m. high, armed with straight usually terete prickles, the sterile 

 shoots also often bristly. Leaves 5-7-foliolate; stipules pilose and glandular on the back; rachis 

 and petioles glandular and pilose ; leaflets broadly oval, 1-3 cm. long, pilose and glandular be- 

 neath, doubly serrate with gland-tipped teeth ; pedicels glabrous ; petals broadly obovate, about 

 2-3 cm. long ; fruit about 12 mm. in diameter. 



Open woods, Transition Zone; Shasta County to Monterey County, and central Sierra Nevada, California. 

 Type locality: Monterey, California. May-July. 



Rosa Durandii Crepin, Bull. Soc. Bot. Fr. 22: 19. 1875. Stems erect, 2-3 m. high, brown, with stout flat 

 curved prickles, about 15 mm. long, the branches pubescent and densely glandular-hispid. Leaves 5-9-foliolate; 

 petioles unarmed, pubescent and very glandular; leaflets broadly oval, glabrous above, densely glandular-granu- 

 liferous beneath, double-toothed with gland-tipped teeth; hypanthium glabrous or glandular at base, globose, in 

 fruit 12—15 mm. broad- sepals broadly lanceolate, caudate-attenuate, entire, glandular on the back. A little- 

 known species, Queen Charlotte Island, Davidson 8144, and Oregon, Elihu Hall 146. Type locality: Oregon, 

 without definite locality. 



4. Rosa myriadenia Greene. Glandular Rose. Fig. 2505. 



Rosa myriadenia Greene, Leaflets Bot. Obs. 2: 263. 1912. 



Stems low, with spreading branches, armed with slender terete distinctly curved infrastipular 

 prickles. Leaves 5-foliolate; stipules broad, densely glandular and slightly prickly; leaflets oval, 

 1-2 cm. long, doubly serrate, with gland-tipped teeth, dark green and glabrous above, densely 

 pilose beneath and glandular on the veins ; flowers 1-3 ; pedicels glabrous ; hypanthium globose, 

 with a short neck; sepals caudate-attenuate, glandular-hispid and sometimes prickly on the back. 



Transition Zone; southern Oregon, west of the Cascade Mountains. Type locality: Huckleberry Mountain, 

 Jackson County, Oregon. May-July. 



5. Rosa Spaldingii Crepin. Spalding's Rose. Fig. 2506. 



Rosa macrocarpa Raf. Med. Fl. 2: 258. 1830. Not Merat, 1812. 

 Rosa Spaldingii Crepin, Bull. Soc. Bot. Belg. 12: 420. 1876. 



Stems erect, about 1 m. high, brown, usually with straight infrastipular prickles, 5-10 mm. 

 long, young shoots usually bristly, flowering branches glabrous, sparsely prickly. Leaves 5-7- 

 foliolate; petioles and rachis puberulent and sometimes slightly glandular; leaflets oval or 

 broadly oval, 1.5-5 cm. long, coarsely toothed, the teeth seldom double and scarcely glandular, 

 light green and glabrous above, pale and puberulent beneath ; flowers usually solitary ; pedicels 

 glabrous; hypanthium glabrous; sepals lanceolate, caudate-attenuate, entire, sometimes with 

 foliaceous tips, glabrous or very rarely glandular on the back; fruiting hypanthium globose, 

 12-18 mm. broad. 



British Columbia to eastern Oregon, Wyoming, and Utah. Type locality: Clearwater, Idaho. May- July. 



Rosa yainacensis Greene, Pittonia 5: 109. 1903. Stems low and depressed, armed, often densely so, with 

 long straight prickles. Leaves usually 7-foliolate; stipules densely glandular-denticulate; petioles and rachis 

 with numerous short-stalked glands and a few prickles; leaflets oval to obovate, rarely 2 cm. long, doubly toothed, 

 glabrous and dark green above, pale and puberulent beneath; flowers usually solitary; pedicels densely glandular- 

 hispid; hypanthium globose, glabrous; sepals often with foliaceous tips, sparingly glandular-hispid and prickly. 



Upper Sonoran and Arid Transition Zones; southern Oregon east of the Cascades, also adjacent California. 

 Type locality: hills of the Yainax Indian Reservation, Oregon. May-July. 



