REST HARROW 19 



being equal. The pods are less than the calyx in length, downy, with 

 seeds with raised points. 



The plant is from i ft. to 18 in. in height. June, July, August 

 are the periods during which the flowers are in bloom. The plant 

 is perennial and increased by division. 



The flower is similar to that of Lohis. It has the piston-mechanism. 

 The alse or wings on which the bees alight act as levers to depress the 

 carina or keel, and fold over its upper part, being united by two pro- 



REST HARROW (Ononis spinosa, L.) 



jections, directed downwards and upwards, which fit into deep grooves. 

 Two lobes on the upper margin of the alse He over the column of 

 stamens. The alse do not cohere, but the upper borders of the carina 

 do at first, forming a tube, and leave a small opening only at the tip, 

 where the pollen is pushed through a small gap. The stamens are 

 monaclelphous or attached. Honey is not secreted. The stamens are 

 thickened at the end, the outer ones most, but the inner produce more 

 pollen. The visitors are Apis mellifica, Cilissa leporina, Anthopkora 

 quadrimaculata, Bombus lapidarius. 



In the Rest Harrow the seeds are dispersed by the plant's own 

 mechanism. The pod is i-4-celled and 2-valved, and when con- 

 tracted when dry it expels the seeds for a short distance. 



