Scrophulariaceae. 393 



//, self-pollination will be able to take place easily, as the 

 pollen \vill almost inevitably fall upon the stigma." 



To the above description I can add, that in all cases, 

 I found in fully developed flowers, with the exception only 

 of the flowers in two inflorescences from Kola, — which hap- 

 pen to belong to the material upon which Warming has 

 based his description — the stigma projecting more or less 

 beyond the apex of the posterior lip, usually as in Fig. 11, 

 A and B, sometimes projecting even more, and in quite 

 young flowers somewhat less; in several cases I verified the 

 presence of germinating pollen upon the stigma. It has not 

 been possible to demonstrate conditions indicative of hetero- 

 styly. It does not appear to be uncommon for the pollen, 

 at any rate in the anthers of the two longest stamens, to 

 germinate even before the flower has entirely expanded, i. e. 

 while it is still hidden by the large subtending leaf, and the 

 corolla is surrounded by the lobes of the calyx. As the 

 stigma, even at that time, protrudes beyond the lobes of 

 the corolla, the distance between it and the anthers will, 

 however, in all probability be so great that self-pollination 

 Axill not be able to take place; in material from Kola there 

 was a flower, like that figured in //, which had germinating 

 pollen in the anthers. 



Both calyx and corolla have a dense covering of shorter 

 and longer non-glandular and glandular hairs, similar in form 

 to those described below under the anatomy of the leaf. 

 According to E. Warming (1. c.) the flowers are visited by 

 small wasps (the genus Pteromalus) ; he found such in several 

 flowers. 



The Geographical Distribution of the plant is, ac- 

 cording to Lange: Labrador, Canada, the Rocky Mountains, 

 western Arctic North America, Kamchatka, East and Arctic 



