EXPLANATION OF THE PLATES. 



Plate L 

 Pio. 



1. A pair of leaves on the flowering stem of Oentiana firma 



(Neilr. yar.), magnified Ij times. 



2. Transverse section of the flowering stem and of a pair of leaves 



of Oentiana Jirma (Neilr. var.), x 3. 



3. Transverse section of a radical leaf of Pmguicula aVpma L., 



x2. 



4. Fragment from the upper surface and central part of a leaf 



of Pmguicula alpina L. ; showing the two kinds of 

 tiichomes, x 60. 



5. Flower of Galanthus nivalis L. ; lateral view ; natural size. 



6. Flower of Cyclamen europcEwm L. ; lateral view ; natural 



size. 



7. A piece of the bristly stem with a pair of leaves of Enautia 



dipsacifolia (Host) ; natural size. 



8. Several of the partly overlapping involucral bracts of Gen- 



ta/urea cyanus L., lateral view, x 3. 



9. Three marginal ligulate flowers from capitulum of Crepis 



paVudosa (L.), and involucral bracts of the same covered 

 with glandular trichomes, x 2. 



10. Lateral view of flower of Oi/rcma alpina L., x 5. 



11. Longitudinal section of a flower of Saxifraga controversa 



Sternbg., x 7. 



12. Lateral view of flower of Linncea borealis L., x 2. 



13. Lateral view of the triohome-covered calyx and bracts of 



LiMMBa borealis L., x 10. The corolla is cut off close above 

 the ends of the sepals. 



14. Longitudinal section of flower of Atragene alpina L., natural 



size. 



