OrDER 47.—ROSEWORTS. 199 
16 R. damasce’na. Damosk R. Monthly R. Sepals reflexed in flower. Flowers 
very double. + 
17 R. alba. White R. Sepals pinnatifid, spreading. Fils. corymbed, large. t¢ 
18 R. moscha’ta. Musk R. Leatiets lanceolate, pointed. Fls. panicled, large, white. + 
19 R. In’dica. Chinese Monthly. Bengal R. Tea Rose, dic. Lfts. ovate, pointed. ¢ 
20 R. Alpi’na. Bowrsault R. Lits. 5-11, obovate, sharp-serrate. Stipules narrow. ¢ 
21 R. eglante’ria. Yellow Rose. Lfts. broad-oval. Petals obcordate, fugacious. t+ 
22 R. Gal’lica. French R. Leaflets elliptical. Petals large, spreading. t+ 
23 R. Pimpinellifo/lia. Burnet R. Lfts. small, roundish. Flowers small. + 
6. GE'UM. Avens. 
Calyx 5-cleft, usually with 5 alternate bractlets outside. Petals 5. 
Stamens many, collected on a dry receptacle, and bearing the long, per- 
sistent style—2 Leaves pinnate or lyrate. 
§ Style bent and jointed near the middle....a 
§ Style straight and not jointed, wholly persistent. Rare plants....6, 7 
= Head of fruits quite sessile, with the styles finally hooked....b,1 
= 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. 
2G, 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 8-5f 
4 G.vernum. Head-stalk A. Petuls yellow, small. Stalk as long as head, W. 
5 G.riva‘/le. Water 4. Whole flower dark purple, large, nodding. 
6 G. triflo’rum. Bractlets longer than the calyx or purplish petals. Fils. 8. W. 
7 G. Peck/ii. Peck’s A. Bractlets minute. Pet. yellow. Stem almost leafless. Mts. 
’. RU’BUS. Bramble. Blackberries and Raspberries. 
Calyx 5-parted, without bractlets. Petals 5, deciduous. Stamens o. 
Ovaries many, becoming many pulpy, drupe-like achenia (grains) united 
into a compound fruit.—Half-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 Raspberries it 
does not. 
* Leaves simple, 8-5-lobed. Flowers large....1-3 
* Leaves compound, of 8-7 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 sessile. Prickles weak, nearly straight....4 
