776 
Schwartz. — Observations on Asarum europaeum 
EXPLANATION OF PLATE LXXII. 
Illustrating Mr. Schwartz’s paper on Asarum europaeum and its Mycorhiza. 
Fig. i. Transverse section of root, showing position of fungal layers, x 325. 
Fig. 2. Longitudinal section of root, x 325. 
Fig. 3. Longitudinal section through fungoid layers, x 730. 
Fig. 4. Bladder-like swelling on hypha. x 1,180. 
Fig. 5. Hypha with nuclei, x 1,180. 
Fig. 6. Hypha piercing cell- wall, x 730. 
F ig. 7. Resting body of fungus, germinating, x 730. 
Fig. 8. Terminal hyphal swelling forming resting body, x 730. 
