469 



Pinguiciila alpiiia L. 



DøLL, p. 383. Wtdler, 1851, p. 420; 1857, p. 607. Hilde- 

 brand. Muller (1893) 1881, p. 352. Winter, p. 78. Klein, 1883, 

 p. 163, tab. IX & X. Warming, p. 27. Stadler, p. 51. Loew, 

 p. 53. Norman, p. 863. Sylvén, 1906. 



Materials in alcohol from northern Scandinavia. 



In arctic regions this species is found mainly in the same 

 localities as P. vulgaris and often growing together with the 

 latter; perhaps it goes a little higher 

 above sea-level in Scandinavia, to 

 about 1000 m (INorman). According 

 to Klein it exists in two varieties, a 

 yellow-green one and a more reddish 

 one; to separate these in my Scandi- 

 navian material has been quite impos- 

 sible. The shoot-sti'ucture lias been 

 mentioned under F. vulgaris. In a 

 biological respect (Fig. 12) it behaves 

 somewhat differently from F. vul- 

 garis. The arrangement of the ge- 

 nitals however is the same as in 

 the latter, but self-pollination is 

 prevented by a slight protogyny. It 

 is visited by flies, on the whole the 

 visits of insects are much more fre- 

 quent than in the two other species, 

 both the yellow spots on the under- pig. 11. Pinguicula alpina. 



lip and the wider entrance to the Richly flowering specimen. Plateau 



de Murnau (Haute-Bavière). May. 



spur and to the genitals serve as About 3/^ natural size. (h.e.p. 

 honey-guides. According to Müller ^ '' 



it is a "Fliegen-Klemfallenblume." Honey is absent, but its 

 part is performed by the mucilage, secreted by the glandular 

 hairs in the inner part of the flower (Stadler). 



In /'. alpina Winter found an Ustilago] this I have not 

 observed in any Scandinavian specimen. 



