330 



BRITISH FLOWERING PLANTS 



Fig. 216. 



Fig. 216. 



Fig. 215. — Diagram to show arrange, 

 ment of stamens in Nepeta. 



is the case (Fig. 216). Some species are adapted to 

 butterflies. We have two species : JSf. Glechoma, creep- 

 ing ; iV. Cataria, upright. 



N. Cataria (Catmint). — The flowers are pale blue or 

 nearly white. The stigma sometimes projects beyond 

 the anthers, and at others is on a level ' with them ; 

 but this does not lead to self-fertilisation, as the plant 



is distinctly protandrous. The 

 complete flowers are 7-8 mm. 

 long. There are also female 

 flowers 5-6 mm. long. These 

 are generally on the same 

 plants as the complete ones. 

 A pubescent species, rare in 

 England, and found as an 

 introduction in Scotland. 



N. Glechoma (Ground Ivy). 

 — The flowers are blue -violet, 

 rarely white or rose, with purple 



Fig. 216.-Diagram to show position and white SpotS. ThcCOrolk- 

 01 stamens in most Labiates. ir . 



tube is lined on its lower side 

 with stifl" hairs ; in the large complete flowers it is 13-16 

 mm. in length. That of the small female flowers is 

 only 6|-8 mm. long. Willis, in Cambridgeshire, found 

 one year at the beginning of the flowering time 86 

 per cent female, towards the end 24 per cent ; another 

 year 50 per cent and 28 per cent. A polymorphous 

 plant, glabrous or hairy. In summer it sends out 

 creeping runners, from which the flowering shoots rise 

 in the following spring. 



Prunella or Brunella 



Calyx distinctly two -lipped. The stamens have a 

 process or lobe beyond the anthers. The processes on 

 the longer stamens are much longer than those on the 

 shorter ones. 



P. vulgaris. — Besides the complete flowers, there are 

 smaller ones with more or less rudimentary stamens. In 

 Belgium, MacLeod found cleistogamous flowers. 



