Jan., 1915.] 
The Roses of Ohio. 
429 
17. Rosa. Rose. 
Erect or climbing shrubs, usually with prickly stems; leaves 
odd-pinnate; stipules adnate to the leaves; flowers showy, bisporan- 
giate; hypanthium urn-shaped, becoming fleshy in the fruit; 
ovularies hairy, ripening into bony achenes. 
1. Leaflets mostly 3; styles united in a slender exserted column; prickles 
very stout, almost as broad at the base as long. R. setigera. (6). 
1. Leaflets 5-9; styles distinct; prickles recurved or straight and slender, 
not nearly so broad as long. 2. 
2. Leaflets small, in- long, orbicular to ovate, pale beneath and 
very glandular. R. rubiginosa. (4). 
2. Leaflets larger, in. long, ovate to narrowly oblong, not glandular. 4. 
3. Leaflets ovate, rounded at the base, doubly and glandular serrate; 
flowers deep pink to crimson, 2-3 in. broad. R. gallica. (5). 
3. Leaflets oblong, acute at the base, not prominently glandular, serrate; 
flowers pink, 1-2 in. broad. 4. 
4. Stems smooth or with very few weak prickles; flowers on smooth 
peduncles; sepals erect on the fruit, not deciduous. R. blanda. (1). 
4. Stems with straight prickles, usually in pairs; sepals spreading, decid¬ 
uous. 5. 
5. Prickles stout and recurved; leaflets finely serrate; stipules convolute; 
hypanthium bristly. R. Carolina. (2). 
5. Prickles slender and straight; leaflets coarsely dentate; stipules flat. 
R. virginiana. (3). 
1 . Rosa blanda Ait. Smooth Rose. Stems 1-5 ft. high, 
usually without prickles; leaflets 5-7, ovate or oblong-lanceolate, 
thin; flowers pink, about 2 in. broad. Lorain, Mercer, Clermont, 
Erie, Clinton, Williams, Lake. 
2. Rosa Carolina L. Swamp Rose. Stems I-8J/2 ft. tall 
with stout, straight or curved prickles; leaflets 5-9, usually 
7, dark green, narrowly oblong, finely serrate, usually pubescent 
beneath; flowers pink, 1 R> in. broad, corymbose or rarely solitary. 
Franklin, Holmes, Trumbull, Hocking, Stark, Logan. Defiance, 
Gallia, Crawford, Shelby, Monroe, Ottawa, Huron, Lake, Ash¬ 
tabula, Auglaize, Cuyahoga, Tuscarawas, Fairfield, Geauga, 
Clarke, Medina, Licking, Miami, Knox, Fulton, Williams, Lorain, 
Summit, Brown. 
3. Rosa virginiana Mill. Virginia Rose. Stems L 2-6 ft. 
high, densely set with long, straight prickles; leaflets 5-7, small, 
obovate, sharply serrate; flowers pink. General. 
4. Rosa rubiginosa L. Sweetbrier (Rose). Stems 3-6ft. 
high, with stout, recurved prickles; leaflets 5-7, ovate or oval, 
doubly serrate, very glandular beneath; fruit oval, glandular. 
Ottawa, Lorain, Highland, Ashtabula, Madison, Hancock, Brown, 
Preble, Jefferson, Morrow, Monroe, Morgan, Licking, Miami, 
Greene, Wayne, Ross, Montgomery, Williams, Warren, Coshoc¬ 
ton, Noble, Guernsey, Knox. 
