516 NORTH AMERICAN FLORA [ VOLUME 22 
floral branches 1-3 dm. long, usually prickly; stipules adnate, narrow or those of the upper 
leaves dilated, more or less villous, glandular-dentate; petiole and rachis villous, prickly, and 
sometimes somewhat glandular; petioles 0.5—2 cm. long; leaflets 5-7, rarely 3 or 9, oval, 1-2 
em. long, usually simply serrate, with triangular-lanceolate, not glandular teeth, dull and 
more or less appressed-pubescent above, villous, but rarely slightly glandular beneath, usually 
rounded or obtuse at both ends; inflorescence usually corymbiform, leafy-bracted, 1—10- 
flowered; pedicels short, glabrous or somewhat villous; hypanthium glabrous, globose or sub- 
globose, with a distinct neck, in fruit 10-15 mm. broad; sepals lanceolate, caudate-attenuate, 
about 15 mm. long, entire, villous and rarely glandular on the margins, tomentose within; 
petals obcordate, 1.5—2.5 cm. long, rose-colored; styles free, not exserted. 
TYPE LOCALITY: San Francisco, California. 
DISTRIBUTION: Oregon to northern Lower California. 
ILLUSTRATIONS: Willm. Gen. Rosa pl. opp. 223; Armstrong, Field Book W. Wild FI. 221, f. 
76. Rosa palustriformis Rydberg, sp. nov. 
A shrub, 5 dm. high or more, with the habit of R. palustris; stem armed with curved 
prickles 5-10 mm. long and more or less flattened; stipules 2.5-3.5 cm. long, puberulent, more 
or less dentate, those of the upper leaves broad, the free portion lanceolate; petiole and rachis 
puberulent and sometimes with a few small prickles; leaflets lanceolate or oblanceolate, acute 
at each end, 3-5 cm. long, finely serrate, dark-green and glabrous above, finely puberulent and 
paler beneath; flowers corymbose; bracts conspicuous; hypanthium round-ellipsoid, in fruit 
about 12 mm. broad and 15 mm. long, glabrous; sepals 2.5-3 cm. long, caudate-attenuate, 
tomentose within, puberulent without, with a few glands on the margins, in fruit erect and 
persistent; petals obcordate, about 2 cm. long; styles distinct, scarcely exserted; achenes in- 
serted on the sides as well as in the bottom of the hypanthium. 
Type collected at Green Bay, Wisconsin, June, 1895, Schuette (in flower); also August, 1899 
(in fruit, both in Gray Herb.). Distributed under a manuscript name, which however is preoccupied. 
77. Rosa neomexicana Cockerell, Entom. News 12: 41. 1901. 
Stem 1-2 m. high, light-brown, or the young shoots reddish, terete, armed with usually 
paired infrastipular prickles, which are 5-10 mm. long, more or less recurved; stipules about 
1 cm. long, adnate, rather narrow, or the upper dilated, glabrous or finely pubescent, somewhat 
glandular-dentate on the margins; rachis puberulent and sometimes glandular; leaflets 5-7, 
obovate or on the young shoots elliptic, 1-3.5 cm. long, puberulent or nearly glabrous, glandu- 
lar-pruinose beneath, rather pale beneath, toothed with ovate teeth; flowers solitary or 2 or 3 
together; pedicels 1—2 cm. long, glabrous; hypanthium ellipsoid, tapering at the base, glabrous, 
in fruit 8-10 mm. thick, 15 mm. long, and purple; sepals lanceolate, caudate-attenuate, 10-15 
mm. long, glabrous without, except the tomentose margins, in fruit erect and rather persistent; 
petals 1.5—2 cm. long, obcordate; styles persistent, distinct, not exserted; achenes inserted both 
in the bottom and on the sides of the hypanthium. 
TYPE LocALiIty: Cloudcroft, New Mexico. 
DISTRIBUTION: Arizona, New Mexico, southern Colorado, and Utah. 
ILLUSTRATIONS: Armstrong, Field Book W. Wild Fl. 221, f. (as R. Fendler7). 
78. Rosa arizonica Rydberg, sp. noy. 
Stem low, 1 m. high or less, much branched, armed with small curved prickles 3-5 mm. 
long, bark in age becoming almost white and peeling off; floral branches 1 dm. long or less, 
often unarmed; stipules adnate, short, less than 1 cm. long, the upper dilated, finely puberulent; 
rachis and petioles finely puberulent; leaflets usually 5, rarely 7, broadly oval, coarsely toothed, 
2 cm. long or less, light-green, glabrous above, finely puberulent beneath; flowers mostly soli- 
tary; pedicels glabrous, about 1 cm. long; hypanthium globose, glabrous, in fruit 7-8 mm. 
broad; sepals broadly lanceolate, caudate-attenuate, 1—-1.5 cm. long, tomentose on the margins, 
glabrate on the back; petals obovate, dark rose-colored, 2 cm. long or less; styles distinct, 
persistent, not exserted. 
Type collected in the vicinity of Flagstaff, Arizona, June 15, 1898, D. T. MacDougal 110 (herb. 
N. Y Bot. Gard.) 
DISTRIBUTION: New Mexico and Arizona. 
