70 RYDBERG: NOTES ON ROSACEAE 
4. Rosa Brownii Rydberg, sp. nov. 
Stem slender, terete, glabrous, green or brownish, armed with 
slender straight prickles which are 5-8 mm. long, terete except the 
expanded depressed base; leaves five- to seven-foliolate; stipules 
ovate, acute; petiole and rachis finely'’pilose and more or less glandu- 
lar; leaflets thin, 1-3 cm. long, serrate withsome of the'teeth double, 
broadly oval, acute at the apex, glabrate above, paler, pilose and 
slightly glandular-muricate beneath; flowers mostly solitary; 
pedicels 1-2 cm. long, glabrous; hypanthium globose, glabrous, in 
fruit about 12 mm. in diameter; sepals lanceolate, caudate-acu- 
minate, usually with foliaceous tips, about 2 cm. long, glabrate on 
the back, tomentose and slightly glandular-hispid around the 
margins, and tomentose within; petals broadly obovate, rose- 
colored, 1.5-2 cm. long; styles distinct, persistent, not exserted; 
achenes — both on the inside and in the bottom of the 
hypanthiu 
This species resembles somewhat R. nutkana, but the prickles 
are weak, not at all flattened, and the petioles, rachis and lower 
surface of the leaflets decidedly pilose. Much of the Californian 
material determined as R. nutkana belongs here. 
CaLiForNIA: North side of Mt. Shasta, 1897, H. E. Brown 349 
(type, in the herbarium of the New York Botanical Garden); Hum- 
boldt Bay, 1901, Chandler 1198; Mendecino, 1903, McMurphy 270. 
5. Rosa CALIFORNICA Cham. & Schlecht. Linnaea 2: 35. 1827 
The original R. californica is characterized by its stout, flat, 
usually curved prickles, corymbose flowers, and its leaflets which 
are villous on both sides, usually simple-toothed and rarely 
slightly, if at all, glandular. The hypanthiumis usually ovoid with 
a distinct neck. It is not uncommon throughout California, and 
two specimens have been seen from Lower California. 
LOWER CALIFORNIA: San Ysidro Ranch, Mearns 3865 (peculiar 
form); between Tio Juana River and Laguna, Mearns 3504. 
6. Rosa ALDERSONTI Greene, Pittonia 5: 110. 1903 
This species differs from R. californica in the doubly serrate 
leaflets which are conspicuously glandular-granuliferous and only 
slightly, if at all, pubescent beneath. The first one to recognize 
it as different from the typical R. californica was C. A. Meyer, who 
