. Scrophulariaceae. 



491 



corme (except the outermost layer) reserve food-material 

 was found in the form of grains, as much as 10 .a in size, 

 round, or slightly angular, and with a small central ca\åty. 

 With a solution of iodine-iodide of potassum they assumed 

 a red-violet to brownish-red colour, which disappeared on 



Fig. 46. Pedicularis Oederi. 



A, Transverse section of the leaf. B and C, Epidermal cells, B, from 



the upper, and C from the lower surface of the leaf. D, A non-glandular 



hair. {A about "»A; B and C about "o/^. j) about '»A.) 



heating, but reappeared after cooling; they stand out after 

 treatment \\ith potash-lye, and at last disintegrate altogether. 

 Judging from the above-mentioned reactions, they must be 

 assumed to consist of amylodextrin-starch. 



The structure of the above-ground stem is fundamentally 

 as in the other species. The thickening and lignification of 

 the wood-fibres between and outside the vessels, and of the 



