Rydberg: Notes on Rosaceae 71 



called it R. californica Petersiana* Crepin changed the varietal 

 name to glandulosa.t He also gave R. Asdiersoniana Crepin as a 

 synonym. Rosa Aldersonii was described from a specimen, not 

 quite of the usual form, having small, more rounded leaflets, short 

 prickles and congested inflorescence. Rosa Breweri Greene| is, 

 in my opinion, only a stunted and somewhat abnormal form of 

 this species, with densely glandular pedicels and more hairy 

 leaves. R. Aldersonii is, besides, very variable, usually with a 

 subglobose hypanthium, with a distinct neck, but sometimes with 

 a somewhat ellipsoid hypanthium. It also varies in having larger 

 or smaller leaflets and with numerous or few flowers. Sometimes 

 the styles are more or less exserted. It is fully as common as the 

 preceding throughout California. 



7. Rosa Greenei Rydberg, sp. nov. 



Stem rather slender, i m. or so high, purplish, glabrous, armed 

 with curved infrastipular prickles, which are more or less flattened, 

 3-6 mm. long; leaves five- to seven-foliolate; stipules narrow, 1-1.5 

 cm. long, densely glandular-puberulent; petiole and rachis glandu- 

 lar-puberulent and somewhat prickly; leaflets elliptic, acute at both 

 ends, 2-4 cm. long, glandular-double-toothed, puberulent above, 

 glandular-puberulent and slightly pilose beneath; inflorescence 

 corymbiform or paniculate; pedicels 1-2 cm. long, glandular- 

 puberulent; hypanthium elongate-ellipsoid, with a distinct neck, 

 in fruit 2 cm. long and i cm. in diameter; sepals lanceolate, caudate- 

 acuminate, about 2 cm. long, glandular-hispid on the back, to- 

 mentose within, in fruit persistent and erect; petals about 15 mm. 

 long, rose-colored; styles distinct, persistent, not exserted. 



This is related to R. Aldersonii, but differs in the narrower 

 leaflets and the decidedly ellipsoid hypanthium, with a long neck. 



California: Santa Cruz Island, July and August, 1886, E. L. 

 Greene (type, in the United States National Herbarium) ; appar- 

 ently also San Mateo, Heller 8582. 



8. Rosa brachycarpa Rydberg, sp, nov. 



Stem apparently tall, stout, purple, armed with curved flat- 

 tened infrastipular prickles, which are about 5 mm. long; leaves 

 mostly seven-foliolate ; stipules not strongly dilated, 1-1.5 cm. long, 



*Zintr. 19. 1848. 



t Bull. Soc. Bot. Belg. 15: 52. 1876. 



J Leaflets 2: 262. 1912. 



