Cascade Rose

Rosa yainacensis Greene, Pittonia 5: 109. 1903
Stem low, depressed, armed with straight, long, sometimes numerous prickles; stipules adnate, densely glandular-denticulate on the margins; petiole and rachis with numerous shortstalked glands and a few slender prickles; leaflets usually 7, rather approximate, oval or obovate,
subsessile, doubly serrate, glabrous and deep green above, pale and puberulent beneath, rarely
2 cm. long; flowers mostly solitary; pedicels densely glandular-hispid, especially so under the
hypanthium; hypanthium globose, glabrous; sepals lance-oblong, caudate-acuminate and
often with foliaceous tips, sparingly glandular-hispid and prickly; petals rose-colored, about
15 mm. long; styles distinct, not exserted, persistent.
Type: locality: Hills of the Yainax Indian Reservation, Oregon. Distribution: Southern Oregon and northern California.