130 WEEDS AND USEFUL PLANTS. 



1, R, seti'gera, MX. Stems climbing, armed with stout nearly straight 

 prickles ; leaflets 3-5, ovate, acute ; flowers corymbed ; styles cohering 

 iu a column as long as the stamens. 



PRICKLY KOSA. Prairie Hose. Climbing Eose. 



Stem long and climbing, often growing from 10-20 feet in one season. Petioles glandu- 

 lar. Leaflets acute, sharply serrate, smooth or dowuy beneath. Flowers reddish, nearly 

 inodorous, deep rose color changing to white calyx glandular. Fruit globular. 



Borders of prairies : Ohio, Illinois and southward. July. 



Obs. This species is often cultivated, and is well adapted to train 

 along walls, palisades, &c. It is the only native climbing rose. 



2, R. laviga'ta, MX. Glabrous; stems armed with strong, often 

 geminate curved prickles ; leaves 3- (sometimes 5-) foliolate ; leaflets 

 coriaceous ; stipules setaceous, deciduous ; flowers solitary, terminal ; 

 tube of calyx ovoid, muricate with long prickly bristles. 



SMOOTH KOSA. Cherokee Kose. 



Stem with long flexile branches 15-20 feet in length. Leaves persistent, often prickly 

 on the midrib below. Flowers very large, white. 

 South Carolina to Louisiana. April. 



Obs. This evergreen species has long been cultivated at the South as 

 the " Cherokee Rose ;" its origin is not known. It is highly commended 

 as a hedge plant, by ELLIOTT. " In our rural economy," he says, " this 

 plant will one day become very important. For the purpose of forming 

 hedges, there is perhaps no plant which unites so many advantages." 

 This Eose, however, will not stand our northern winters. 



3, R, Caroli'na, L. Stem smooth, armed with stout recurved stipular 

 prickles ; leaflets mostly 5-7, oblong-oval or elliptic-lanceolate, finely 

 serrate, somewhat glaucous beneath ; flowers corymbose. 



CAROLINA EOSA. Swamp Eose. 



Stem 4-6 feet high, with numerous purple branches. Leaflets 1-2 inches long. Flowers 

 mostly in terminal corymbs of 3-6 or 7 in a cluster. Petals red or purplish. Fruit (i. e. 

 the fleshy calyx tube) depressed globose, a little glandular-hispid, dark red and shining 

 when mature. 



Low swampy grounds and thickets : Northern and Middle States. Fl. June - July. Fr. 

 September. 



Obs. This is often a troublesome plant in wet meadows and low 

 grounds, forming unsightly thickets with other weeds, if neglected. 

 Another native species, R, lu'cida, Ehrh., the Dwarf Wild Eose, is 

 very common ; it differs from the preceding in its unequal bristly 

 prickles and 1 3-flowered peduncles. The Sweet Briar, R. rubigino'sa, 

 L., well known for its fragrant glandular foliage, is thoroughly natural- 

 ized in many places. The cultivated roses, so justly prized among 

 flowers, are varieties produced by long and careful culture from different 

 species of this genus. An enumeration even of the most common would 

 occupy too much space here. 



