Rosa carolina subsp. carolina

Rosa texarkana Rydberg, sp. nov
Stems terete, 1 m. high, slender, armed with slender, terete, straight prickles, which are 5-8 mm. long, as well as conspicuously bristly; stipules adnate, about 1 cm. long, rather narrow, glabrous, densely dentate on the margin, the teeth ending in stipitate glands, the free portion lanceolate and more or less spreading; petiole and rachis copiously glandular-hispid and somewhat prickly; leaflets subcoriaceous, 1-4 cm. long, elliptic or oval, acute at both ends, sharply serrate, glabrous on both sides, or puberulent beneath, dark and shining above, paler beneath; flowers corymbose; pedicels 1-1.5 cm. long, sparingly glandular-hispid; hypanthium globose or slightly depressed, in fruit 10-12 mm. thick, sparingly glandular; sepals lanceolate, glandular on the back, caudate-attenuate, soon deciduous; achenes inserted in the bottom of the hypanthium.
Type collected on railroad north of Texarkana, Arkansas, July 24, 1896, H. Eggert (herb. Mo. Bot. Gard.).
Distribution: Arkansas and northern Mississippi.

Rosa obovata Raf. Ann. Gen. Sci. Phys. 5: 217. 1820
Rosa Carolina « Ait. Hort. Kew. ed. 2. 3: 260. 1811.
Rosa laxa Lindl. Ros. Monog. 18. 1820. Not Rosa laxa Retz. 1803.
Rosa Lindleyi Spreng. Syst. 2: 547. 1825. Not Rosa Lindleyana Tratt. 1823.
Rosa humilis grandiflora Baker; Willm. Gen. Rosa 1: 207. 1911. Noti?. grandiflora Salisb. 1796.
Stem slender, terete, about 1 m. high, glabrous, armed with slender, short, terete, mostly straight prickles 5-18 mm. long; stipules adnate to the petioles, 1-2 cm. long, mostly narrow and entire, sometimes glandular, the free portion lanceolate; petioles and rachis mostly glabrous, often armed with small prickles, sometimes glandular; leaflets mostly 7, obovate or broadly oval, 1.5-4 cm. long, acute or often rounded at the apex, coarsely serrate except the cuneate base, glabrous on both sides, rather dull and somewhat glaucescent; flowers mostly solitary or 2-4 together; pedicels more or less glandular-hispid; hypanthium more or less glandular-hispid, globose or depressed-globose, rounded at the base, in fruit about 12 mm. in diameter; sepals lanceolate, caudate-attenuate, 15-20 mm. long, glandular-hispid on the back, tomentose within, more or less lobed, after anthesis reflexed and deciduous in fruit; petals about 3 cm. long, obcordate, rose-colored; styles distinct, persistent, not exserted; achenes attached mainly in the bottom of the hypanthium.
Type locality : Mountains of the Highlands and Catskills, New York. Distribution: Maine to Delaware, Missouri, and Michigan.

Rosa serrulata Raf. Ann. Gen. Sci. Phys. 5: 218. 1820
Rosa parvi flora glandulosa Crepin, Bull. Soc. Bot. Belg. 15: 68. 1876.
Rosa parviflora setigera Crepin, Bull. Soc. Bot. Belg. 15: 68. 1876.
Rosa mexicana S. Wats. Proc. Am. Acad. 17: 354. 1882. Not R. mexicana Willd. 1825.
Stem slender, terete, glabrous, 3-10 dm. high, bristly, especially the young shoots, armed with slender infrastipular prickles, which are straight, terete, 4-8 mm. long; stipules adnate, about 1 cm. long, narrow, glabrous or slightly pubescent, strongly glandular-ciliate on the margins and often glandular on the back; petioles and rachis glandular-hispid, otherwise glabrous or nearly so, the free portion of the petioles 3-10 mm. long; leaflets usually 5, rarely 3 or 7, lance-elliptic or rarely oval, 1-4 cm. long, acute at both ends, light-green, glabrous or nearly so and somewhat shining above, often paler, glabrous or slightly pubescent on the veins and sometimes glandular beneath, sharply serrate with gland-tipped teeth, some of which are often denticulate or glandular-ciliate; flowers solitary; peduncles 1-3 cm. long, more or less glandular-hispid; hypanthium globose or slightly depressed, glandular-hispid, in fruit 8-12 mm. broad; sepals lanceolate, glandular-hispid on the back, tomentose within, caudateacuminate, 1.5-2.5 cm. long, some of them usually with lanceolate or subulate appendages, after anthesis reflexed and soon deciduous; petals rose-colored, 1.5-2.5 cm. long; styles distinct, persistent, not exserted; achenes inserted in the bottom of the hypanthium.
Type locality: Highlands and Catskills, New York.
Distribution: Massachusetts to Ontario, Iowa, Texas, and Florida; Coahuila and Nuevo Leon.

Rosa palmeri Rydberg, sp. nov
Stem 5 dm. high or more, rather densely bristly and weakly prickly, especially on the young shoots, somewhat glandular; prickles slender, terete, somewhat reflexed; floral branches less armed; stipules 1.5-2 cm. long, more or less puberulent, entire, the free portion lanceolate; petioles and rachis more or less glandular-hispid; leaflets on the young shoots mostly 9 and the floral branches mostly 5, dark-green and glabrous above, paler and mostly pubescent on the veins beneath, 2-4 cm. long, regularly serrate, oblong-lanceolate or lanceolate, or on the floral branches oblanceolate; flowers solitary, or few in a corymb; peduncles 1-2 cm. long, glandularhispid; hypanthium globose, glandular-hispid, in fruit about 12 mm. thick; sepals 2-2.5 cm. long, glandular-hispid, caudate-attenuate, reflexed in fruit; petals obcordate, about 2 cm. long; styles persistent, not exserted.
Type collected at Carthage, Missouri, August 13, 1911, E. J. Palmer 3428 (Gray Herb.). Distribution: Missouri, Oklahoma, and Texas.