420 



Fr. J. Mathiesen. 



С, D and E, it becomes evident, that this form of glands 

 in Bartschia — as already pointed out by Heinricher (cf. 

 his addition to the cited paper of Scherffel) — belongs 

 to the Lathraea-iype like the similar ones in Euphrasia. Fig. 

 19, / and К show these glandular hairs seen from above; 



Fig. 19. Bartschia alp in a. 



Different types of non-glandular and glandular hairs from the leaf. 



(A—E, about 90Д; F—K, about ^эод.) 



below the stalk-cell the lateral walls of the epidermal cells 

 are indicated by dots, in К two intercellular spaces are formed 

 between them, 2 — 4 of these are found rather commonly 

 under the hairs. A glandular hair, similar to that which is 

 seen from above in if, is shown in H in transverse section, 

 here also 2 intercellular spaces are distinctly seen. G and / 

 have no intercellular spaces of this kind. Glandular hairs of 

 type 4 occur only on the lower surface of the leaf, under 

 the branches of the veins of higher order; in the same place 

 there is found in addition to this a great number of hair 



