3°° 



BEES AND BEE-KEEPING. 



effected, but the pollen utterly fails in even forming 

 a pollen tube. The pretty Pulmonaria officinalis, or 

 lungwort, presents another example of the same 

 singular fact, which obtains, in a less degree, with many 

 other plants ; Darwin, in one list, enumerating thirty- 

 four. Polygonum fagopyrum (buckwheat), previously 

 figured, is strongly dimorphic, having short styles and 

 long filaments, or the converse. 



Fig. 62.— Linum grandiflorum, Order Linacece. 



A, Blossom and Bud. B, Andrecium and Gynecium of Long-styled Form — a, a, 

 Anthers ; s, s, Stigmas. C, Andrecium and Gynecium of Short-styled Form ; 

 Lettering as before. 



But plants occasionally, as previously hinted, present 

 three forms in the same species. No example is more 

 surprising than that of purple loosestrife (Lythrum 

 Salicaria), which, withal, is a good honey-producer, 

 secreting nectar all round the base of the ovaries, and, 

 in consequence, visited with great frequency by hive 

 bees. It is also amongst the most handsome of our 



