82 DIALYPETALOUS EXOGENS 



2. R. liicida, Ehrh. Stem-prickles bristle-like, nearly straight, 

 mostly deciduous ; flowers usually in pairs. 

 R. parviflora. Ehrh. $ FL Cestr. ed. 2. p. 310. 

 LUCID ROSA. Dwarf Wild Rose. 



Stem 1 to 2 feet high, with greenish branches. Leaflets 5 to 9 (mostly 7), 1 to 

 near 2 inches long, generally oval. Flowers pale red, sometimes solitary. Hips 

 subglobose, dark red and nearly smooth, when mature. 

 Hob. Borders of .woods ; old fields, &c.: frequent. FL June. Fr. Sept. 



3* R- rubiginbsa, L. Leaflets and stipules glandular-pubescent, 

 fragrant; flowers mostly solitary, small. 

 RUBIGINOUS, or RUSTY ROSA. Sweet Brier. 



Stem 6 to 8 feet high (when trained up, much taller), with long slender branches, 

 mostly yellowish-green. Leaflets 5 to 7, one-third to three-fourths of an inch long, 

 oval or obovate, green above, clothed with a rusty glandular viscid pubescence 

 beneath. Flowers pale red. Hips oval, mostly smooth, reddish orange color when 

 mature. 

 Hob. Sandy banks; roadsides, &c.: Nat. of Europe.^?. June. Fr. Sept. 



Obs. This species, so generally admired for the fragrance of its 

 leaves, is sometimes cultivated, and has become naturalized in 

 many places. The species of this delightful genus are quite numer- 

 ous; while the splendid varieties, produced by skillful Florists 

 (and sedulously cultivated, by persons of taste), almost defy the 

 attempt to catalogue them, and yet they are continually being 

 multiplied. 



SUBORDER III. PO V MEAE. 



Trees or shrubs ; leaves mostly simple ; ovaries 2 to 5 (rarely solitary), cohering 

 with each other and with the including thickened fleshy calyx-tube, each ovary 

 or cell containing one or few ascending seeds. 



DIVISION I. CALYX-TUBE URCEOLATE. 

 123. CRATAE V GUS, L. 



[Gr. Kratos, strength; in allusion to the firmness of the wood.] 

 Styles 1 or 2 to 5. Pome fleshy or somewhat mealy, containing 1 

 to 5 bony 1-seeded carpels. Thorny shrubs : leaves simple, mostly 

 incised or lobed ; flowers usually white. 



f Corymbs many-flowered. * Fruit small. 



1. C. oxyacdntha, L. Leaves cuneate-obovate, laciniate-lobed, often 

 trifid; styles 1 to 3; fruit ovoid. 

 SHARP-THORNED CRATAEGUS. English Hawthorn. 



Stem 8 to 12 feet high, much branched; branches rugged, armed with sharp 

 tapering thorns about half an inch in length. Leaves an inch to an inch and half 

 long, and about as wide as long, variously lobed, often 3- or 5-lobed, with the mid- 

 dle or terminal lobe trifid; stipules of the young plant foliaceous, obliquely falcate- 

 reniform. Corymbs terminal on the short spurs. Style mostly solitary. Fruit 

 about % of an inch in diameter, purple when mature. 

 Hob. Roadsides; fence-rows, &c. Nat. of Europe. FL May. Fr. Octo. 



Obs. This Thorn so familiar to us, in the Poetry of England 

 was formerly rather frequent in Chester County, and partially nat- 

 uralized; but is now becoming rare. It was probably introduced 



