508 NORTH AMERICAN FLORA [ VoLUME 22 
nearly sessile, more or less double-serrate with glandular teeth, thin, glabrous or nearly so 
above, paler, slightly pubescent, and glandular-granuliferous beneath; flowers usually solitary, 
rarely 2 or 3; pedicels 1-3 cm. long, glabrous; hypanthium subglobose or rounded-elliptic, 
glabrous, in fruit 12-15 mm. broad, with very short neck; sepals lanceolate, caudate-acuminate, 
about 2 cm. long, tomentose within and on the margin, slightly if at all glandular, after anthesis 
erect, connivent, and persistent; petals broadly obcordate, 2—2.5 cm. long, rose-colored; styles 
distinct, persistent, not exserted; achenes inserted in the bottom and on the sides of the 
hypanthium. 
. 
TYPE LOCALITY: Basin of Saskatchewan. 
DISTRIBUTION: Ontario to Colorado, Montana, and Mackenzie. 
ILLUSTRATIONS: Britt. & Brown, Ill. Fl. f. 1967; ed. 2. f. 2309 (as R. acicularis); Cycl. Am. 
Hort. f. 2161; Stand. Cycl. Hort. f. 3453; Clements, Rocky Mt. Fl. pl. 25, f. 1 (in part, round fruit, 
as R. acicularis). 
Rosa Bourgeauiana X Fendleri. See under R. Fendleri. 
Rosa Bourgeauiana X Macounii. See under R. Macounii. 
Rosa Bourgeauiana X melina. See under R. melina. 
Rosa Bourgeauiana X nutkana. ‘This resembles R. Bourgeauiana in the numerous bristles or 
rather week prickles, but the prickles are stronger than in that species and many of them have 
broadened bases; the leaves are also firmer and conspicuously double-toothed as in R. nutkana. 
South Judith River, Montana, September 1, 1896, J. H. Flodman 613, and elsewhere in Montana 
51. Rosa acicularioides Schuette, Proc. Am. Assoc. Adv. Sci. 46: 
279. 1898. 
Stem perhaps 5 dm. high, densely bristly, especially the young shoots; floral branches 
sparingly so or unarmed; stipules 1.5—2 cm. long, usually broad, especially those of the upper 
leaves, puberulent and glandular on the back, glandular-ciliate on the margins, the free portion 
ovate; petiole and rachis puberulent and glandular; leaflets 7—9, elliptic, obtuse or acutish, 
1.5—3 em. long, mostly glandular double-serrate, finely puberulent above, pale and villous be- 
neath; flowers corymbose; bracts conspicuous, ovate, puberulent and glandular; hypanthium 
subglobose, glabrous, with a short neck, in fruit about 1 cm. in diameter; sepals about 1.5 em. 
long, caudate-attenuate, entire, densely glandular on the back, in age erect and persistent; 
styles distinct, scarcely exserted; achenes inserted on the sides as well as in the bottom of the 
hypanthium. 
TYPE LOCALITY: [According to label in Gray Herbarium, Lily Bay, Door County,] Wisconsin. 
DISTRIBUTION: Type locality and vicinity. 
Rosa acicularioides X carolina. Resembles R. acicularioides in habit, pubescence, and leaves, 
but is perhaps more prickly, with glandular-hispid hypanthium and pedicels, and with more decid- 
uous sepals. Lily Bay, Door County, Wisconsin, Schuette. 
52. Rosa rugosa Thunb. Fl. Jap. 213. 1784. 
Stem 1-2 m. high, densely covered with bristles and prickles; branches and even bristles 
and prickles pubescent, often almost tomentose; stipules adnate, usually dilated, densely 
villous-tomentose and somewhat glandular, the free portion ovate; petioles and rachis tomen- 
tose-villous and more or less prickly; leaflets 5—9, oval, 1.5—5 cm. long, thick, rugose, strongly 
veined and reticulate beneath, shining and dark green above, densely grayish-pubescent 
beneath, mostly acute at the apex, rounded at the base, serrate with broad, rather blunt 
teeth; flowers solitary or a few together; sepals lanceolate, gradually caudate-attenuate, 
2.5—3 em. long, in fruit erect; petals purple or white, 2.5—-3 cm. long; hypanthium globose or 
depressed-globose, 2—2.5 em. in diameter; styles distinct, not exserted; achenes inserted on 
the inner walls as well as in the bottom of the hypanthium. 
TYPE LOCALITY: Japan. 
DISTRIBUTION: Cultivated and occasionally escaped; established in Connecticut and on Nan- 
tucket Island; native of China and Japan. 
ILLUSTRATIONS: Lindl. Ros. Monog. pl. 19; Sieb. & Zucc. Fl. Jap. pl. 28; Bot. Reg. 5: pl. 420; 
Cycl. Am. Hort. f. 2148a, 2162, 2163, 2164; Gartenflora 30: pl. 1049; 42: f. 108; Gard. Chron. II, 
14: f. 72; Garden 55: 434; Am. Gard. 13: 342. f. 1; 344, f. 3; Willm. Gen. Rosa pl. opp. 181; Stand. 
Cycl. Hort. f. 3447, 3448. 
