469 



Pingiiicula alpiua L. 



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

 brand. Müller (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-structure has been 

 mentioned under P. vulgaris. In a 

 biological respect (Fig. 12) it behaves 

 somewhat differently from P. 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 ^'^ЫУ flowering specimen. Plateau 



de Murnau (Haute-Bavière). May. 

 spur and to the genitals serve as About 3/4 natural size. (H.E.P. 



1 -1 . 1. 11« phot.) 



honey-guides. According to Muller 



il is a 'Tliegen-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 F. alpina Winter found an Ustilago] this I have not 

 observed in any Scandinavian specimen. 



