126 HOTTONIA, LYSIMACHIA, ANAGALLIS. [CHAP 



Centunculus, Samolus, and Hottonia. Cyclamen also 

 grows wild in some places, but is not a true native. 



I have already referred to the genus Primula in the 

 introductory chapter {antk p. 33.) The majority of the 

 species are dimorphous, but not all. {Scott. Proc. Linn. 

 Soc, vol. viii. 1864.) In Primula Stricta, according to 

 Axell. (Om Anord. for de Vax Beffucktning), when 

 the flowers first open, the anthers are already mature, 

 and are attached to the tube of the corolla, some 

 distance above the as yet immature stigma. 

 Gradually however the pistil elongates, bringing the 

 stigma to the same height as the anthers. 



Hottonia palustris, though so unlike Primula in 

 habit and appearance, is also dimorphous, and agrees 

 with the former genus very nearly in the relative 

 positions of the stamens and pistil in the two forms, 

 The difference was noticed by Sprengel, who says 

 (p. 103), " I think this is not accidental, but a provision 

 of nature, though I am not in a position to point out 

 the advantage of it." 



Lysimachia vulgaris produces no honey. In this 

 species Miiller has observed the existence of two 

 extremes (connected, however, by intermediate 

 forms) ; one, more conspicuous, which rarely or 

 never fertilises itself; the other less conspicuous, 

 frequenting shady places, and habitually self-fertile. 



Of the genus Anagallis (the Pimpernel) we have, 

 according to Bentham, two species only, A. arvensis 

 and A . tenella. The former, however, contains two well 

 marked varieties, one blue and the other red, which are 

 considered by some botanists as distinct species, under 

 the names of A. ccerulea, and A. arvensis. Whether 



