122 ROSACE^E. (ROSE FAMILY.) 



10. R. cimeifolius, Pursh. (SAND BLACKBERRY.) Shrubby (l-3 

 high), upright, armed with stout recurved prickles ; branchlets and lower surface of 

 the leaves whitish-woolly ; leaflets 3-5, wedge-obovate, thickish, serrate above ; 

 peduncles 2-4-flowered ; petals large. Sandy woods, S. New York to Virginia 

 and southward. May- July ; ripening its well-flavored black fruit in August. 



11. R. tlivialis, Michx. (Low BUSH-BLACKBERRY.) Shrubby, procum- 

 bent, bristly and prickly ; leaves evergreen, coriaceous, nearly glabrous ; leaflets 3 (or 

 pedately 5), ovate-oblong or lanceolate, sharply serrate; peduncles 1-3-flow- 

 ered ; petals large. Sandy soil, Virginia and southward. March - May. 



15. ROSA, Tourn. ROSE. 



Calyx-tube nra-shaped, contracted at the mouth, becoming fleshy in fruit. 

 Petals 5, obovate or obcordate, inserted, with the many stamens, into the edge 

 of the hollow thin disk that lines the calyx-tube and bears the numerous pistils 

 over its inner surface. Ovaries hairy, becoming bony achenia in fruit. Shrub- 

 by and prickly, with odd-pinnate leaves, and stipules cohering with the petiole 

 stalks, foliage, &c. often bearing aromatic glands. (The ancient Latin name.) 

 * Styles cohering in a column, as long as the stamens. 



1. R. SCtigera, Michx. (CLIMBING or PRAIRIE ROSE.) Stems climb- 

 ing, armed with stout nearly straight prickles, not bristly ; leaflets 3-5, ovate, acute, 

 sharply serrate, smooth or downy beneath ; stalks and calyx glandular ; flowers 

 corymbed ; sepals pointed ; petals deep rose-color changing to white ; fruit (hip) 

 globular. Borders of prairies and thickets, Ohio to Illinois and southward. 

 July. A fine species, the only American climbing Rose ; the strong shoots 

 growing 10 -20 in a season. 



* * Styles separate, nearly included in the calyx-tube : petals rose-color. 



2. R. Carolina, L. (SWAMP ROSE.) Stems tall (4 -7 high), armed 

 with stout hooked prickles, not bristly ; leaflets 5-9, elliptical, often acute, dull 

 above and pale beneath ; stipules narrow ; flowers numerous, in cory m bs ; calyx and 

 peduncles glandular-bristly, the former with leaf-like appendages ; fruit (hip) 

 depressed-globular, somewhat bristly. Low grounds, common. June - Sept. 



3. R. lucida, EhrhVrt. (DWARF WILD-ROSE.) Stems (l-2 high), 

 armed with unequal bristly prickles, which are mostly deciduous, the stouter per- 

 sistent ones nearly straight, slender; leaflets 5-9, elliptical or oblong-lanceolate, 

 shining above, sharply serrate ; stipules broad ; peduncles 1 - 3-flowered, and with 

 the appendaged calyx-lobes glandular-bristly ; fruit depressed-globular, smooth 

 when ripe. Common in dry soil, or along the borders of swamps. May - 

 July. R. nitida, Willd., is a smooth and narrow-leaved form. 



4. R. blcilitla, Ait. (EARLY WILD-ROSE.) Nearly unarmed, or with 

 scattered straight deciduous prickles (l-3 high) ; leaflets 5-7, oval or oblong, 

 obtuse, pale on both sides and minutely downy or hoary beneath, serrate ; stipules 

 large ; flowers 1-3, the peduncles and calyx-tube smooth and glaucous ; fruit glo- 

 bose, crowned with the persistent erect and connivcnt entire calyx -lobes. 

 Rocks and banks, Vermont to Penn. and Wisconsin, chiefly northward. May, 

 June. Petals light rose-color. 



