Okdj:u it.— ROSEWORTS. 109 



16 R. damasce'na. Damask Ii. Montlily E. Sepals reflcxcd in flower. Flo\vc)-3 



very double, t 



17 R. alba. White R. Sepals piiinatifitl, spreading. Fls. coryinbcd, large, t 

 18 R. moscha'ta. Mash E. Leailcts lanceolate, pointed. Fls. panicled, large, white, t 



19 B.. In' AicB.. Chinese Monthly. Bengal R. T:a Rose^d:c. Lfts. ovate, pointed, t 

 20 R Alpi'na. Boursaiilt R. Lfts. 5-11, obovate, sharp-serrate. Stipules narrow, t 



21 R. eglante'ria. Fellow Rose. Lfts. broad-oval. Petals obcordate, fugacious, -f 



22 R. Gal'lica. French R. Leaflets elliptical. Petals large, spreading, t 



23 R. Pimpinellifo'lia. Burnet R. Lfts. small, roundish. Flowers small, t 



6. GE'UM. Aveus. 



Calyx 5-cleft, usually with o alternate bractlets outside. Petals 5. 

 Stamens many, collected on a dry receptacle, and bearing the long, per- 

 sistent style. — U Leaves pinnate or lyrate. 



§ Style bent and jointed near the middle ... .a 



§ Style straight and not jointed, wholly persistent. Kare plants G, 7 



a Head of fruits quite sessile, with the styles finally hooked b, 1 



a Head of fruits stalked in the calyx more or less. . . .4, 5 



b Petals yellow, longer than the calyx 2, 3 



1 G. Virginia'num. Petals white, as long as the calyx. Receptacle hairy. 

 2 G. macrophyl'lum. Mountain A. Lvs. ending with a very large roundish leaflet. 

 8 G. stric'tum. Yellow A. The end leaflet but little larger than the rest. Height 3-5f. 



4 G. vemum. Head-stalk A. Petals yellow, small. Stalk as long as head. W. 



5 G. livable. Water A. Whole flower dark purple, large, nodding. 



6 G. triflo'rum. Bractlets longer than the calyx or jPu/p/wA petals. Fls. 3. W. 



7 G. Peck'ii. Feck's A. Bractlets minute. Pet. yellow. Stem almost leafless. Mts. 



7. RU'BUS. Bramble. Blackberries and Raspberries. 



Calyx 5-parted, without bractlets. Petals 5, deciduous. Stamens oo . 

 Ovaries many, becoming many pulpy, drupe-like achenia (grahis) united 

 into a compound fruit. — Ilalf-shrubby plants with 2^ roots and stems, 

 armed with prickles. Flowers mostly white. In the Blackberries the 

 pulpy receptacle constitutes a part of the fruit, but in the Easpberries it 

 does not. 



* Leaves simple, 3-5-lobcd. Flowers large 1-3 



* Leaves compound, of 3-7 leaflets a 



a Stems stout, upright, often recurved at top b 



a Stems weak, trailing or prostrate 7 



b The side leaflets stalked. Prickles strong, recurved 8 



b The side leaflets sep^^ilc. Prickles weak, nearly straight.... 4 



