98 THE FLORA OF THE ALPS 



beneath, greyish-white. A. alpinay L. (including Hop- 

 pea7ia, Rchb.); leaf-segnients narrow, leaves shining 

 with silky hairs ; a pretty and very common alpine plant. 

 A. pentapJiyllea, L. (including cuneata, Gaud.); leaves 

 only slightly hair}^, the three middle segments deeply in- 

 cised ; very high ; Switzerland, Tirol, P3Tenees. 



13. POTERIUM, L. 



Cal3^x 4-iobed, coloured ; petals o ; stamens numerous ; 

 carpels 1-3. Not alpine. 



P. Sanguisorba^ L. [dictyocarpum^ Spach), Smaller 

 Burnet ; P. muricatwtn, Spach ; and P, officinale^ Hook. 

 {Sanguis orb a officinalis, L.), Greater Burnet; distinguished 

 from one another by very minute characters ; are abun- 

 dant in damp lowland meadows. 



Tribe RoSE.^. — Calyx 5-lobed; petals 5; stamens 

 numerous; carpels numerous, developing into achenes 

 enclosed within the flesh}^ calyx-tube. 



14. Rosa, L. 



Flowers large, handsome; stem often prickly; leaves 

 pinnate, with stipules adnate to the leaf-stalk ; calyx- 

 tube ultimately coriaceous or very fleshy, brightly col- 

 oured, and enclosing the achenes. 



But few species of Rose are alpine. The most readily 

 distinguished of these are : — R. cijinamomea, L., in which 

 the branches are reddish-brown, and the stipules of the 

 barren branches have erect edges, almost conniving in 

 a tube, the prickles in pairs beneath the stipules; wet 

 places ; Engadine, Valais, Winterthur, &c. R. alpina, L. 



