88 



CALYCIFLOR^ 



io. Sanguisorba (Burnet) 



i. 5. officinalis (Great Burnet). The only British species. A 

 tall, elegant plant, with pinnate leaves ; stems 2-3 feet high, 

 sparely clothed with leaves below, branched into 3 or 4 terminal 

 flower-stalks, each bearing an oblong head of small, crowded, 

 purple-brown flowers. Moist pastures ; not uncommon. Fl. June 

 to September. Perennial. 



Sanguisorba Officinalis 

 (Great Burnet) 



Poterium Sanguisorba 

 (Salad Burnet) 



11. Poterium (Salad Burnet) 



1. P. sanguisorba (Salad Burnet). The only British species. 

 Not unlike the last, but smaller, about 1 foot high, and the flower- 

 heads more globular. The leaves are pinnate, with serrate leaflets, 

 and have the taste and smell of cucumber. The flowers grow in 

 small round heads, and are greenish, sometimes tinged with purple. 

 The upper flowers in each head bear crimson tufted pistils, the 

 lower ones 30-40 stamens, with very long drooping filaments. 

 Common in dry pastures, especially on chalk and limestone. 

 Fl. July, August. Perennial. 



12. Rosa (Rose) 



1. R. spinosissima (Burnet, or Scotch Rose). Leaflets small, 

 simply serrated, smooth ; calyx simple ; fruit nearly round. A 

 thick, very prickly bush 2-4 feet high, the prickles nearly straight 



