(1907)  Page(s) 510.  
 
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 short-stalked....

(1907)  Page(s) 500.  
 
John Kunkel Small
26. Rosa serrulata Raf. Ann. Gén. Sci. Phys. 5: 218. 1820.
Rosa parviflora glandulosa Crépin, Bull. Soc. Bot. Belg. 15: 68. 1876. 
Rosa parviflora setigera Crépin, 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, caudate-acuminate, 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 León.