PLATE 20. Fungi. 



Figure 



1 . Vertical section of a leaf of black currant, infested with JEcidium Grossularice. 



sp, spermagonia ; p, perithecia. 



2. Sterigmata (st) and spermatia (sp) from the spermagonia of Mcidium Euphorbia. 



3. Ditto, from Mcidium Berberidis. 



4. Vertical section of a spermagonium of dEcidium Berberidis. 



5. Botrytis infestans y young plants growing out from the stomate of a potato. 



6. Full-grown plants of the same. 6 #, spore of ditto. 



7. Torula ?, growing in urine (not diabetic). 



8. Grape fungus, conidial form (Oidium Tuckeri) as commonly found on the leaves 



and fruits. 



9-11. Conidia of the same, germinating. 



12. Sporiferous form (Circinobolus) . 



13. Spores from the same. 



14. Hop-mildew, Erysyphe (Sphcerotheca) Castagnei. a, Oidial form ; b, b, form 



resembling Circinobolus ; c, d, Erysyphal form ; e, spores. 



15. Fragment from the summit of a fertile filament of Penicillium glaucum. 



16. Spores of ditto, a, two still united ; b, one detached. 



17. Section of a conceptacle of Cenangium Fraxini, containing st, stylospores, and s, 



spermatia. 



18. Ergot of rye, Cordyceps purpurea, Tulasne ; fruits sprouting from the ergot. 



19. Vertical section of the head of one of the fruits bearing conceptacles in its 



periphery. 



20. Vertical section of a conceptacle containing asci. 



21. Asci removed from the same. 



22. Spores from the interior of the asci. 



23. Yeast fungus (Torula Cerevisiae), large form at the bottom of liquid. 



24. Ditto, minute form, appearing as a white mealy substance on the surface of stale 



beer. 



25. Sphceria inquinans (a) with Stilbospora macrosperma (b) in the bark of an elm- 



tree. 



26. A portion of the common matrix separating the two, with the stylospores of 

 Stilbospora (b) above, and the asci of Sphceria (a) below. 



27. Spore of Stilbospora macrosperma. 



28. Spore of Sphceria inquinans. 



