ROSACEA 99 



(PI. 33), with numerous sub-species; a small erect shrub, 

 corolla bright red, the flowering branches usually without 

 spines, leaflets 7-1 1, with scattered glands, fruit red, 

 usually ovoid-oblong ; alpine, frequent. R. rubella, Sm.; 

 resembling the last, but with pale pink or white petals, 

 fruit red; Jura. R. spinosissima, L., Scotch Rose; a 

 small erect shrub, with globular nearly black fruit, the 

 stem densely covered with small thorns ; Jura. R. pomi- 

 fera^ Herrm. ; sepals and flower-stalks very glandular, 

 sepals pinnatifid, fruit large, usually globular; Alps, 

 Jura, Styria, rare. R. mollis, Sm. ; resembling the last, 

 but the glands weaker ; sub-alpine woods. R. ferruginea, 

 Vill. ; sepals usually entire, petals bright red, fruit small, 

 globular, stem almost without prickles ; Alps, Jura. R. 

 inontana, Chaix; leaflets small, nearly round, obtuse, 

 calyx-tube and flower-stalk covered with glandular thorns ; 

 mountain woods, rare. 



The number of Swiss species of Rosa given by Gremli 

 is about fifty, many of them very difficult to distinguish, 

 and possibly hybrids. They may be arranged under the 

 following groups (after Hooker) : — R. spinosissima, L. ; 

 small erect shrubs, with crowded prickles and small 

 nearly globular fruit. R. villosa, L. ; with long prickly 

 branches, leaflets very hairy beneath, densely glandu- 

 lar sepals, and prickly globose or turbinate fruit. R. 

 rubiginosa, L., Sweet Briar ; flower-stalks covered with a 

 glandular pubescence, leaflets densely glandular; fragrant. 

 R. canina, L., Dog- Rose; with long prickly branches, 

 sepals glabrous, pinnate, reflexed, leaflets nearly gla- 

 brous, fruit not prickly. R. arvensis, Huds.; flowers few, 

 pale, sepals deciduous, styles united into an exserted 

 column. 



