SMUTS AND BUNT. 
43 
Ustilago Maydis. Corda. (Maize smut.) On stems, &c., of maize. 
Fig. 29. Spores magnified 460 diameters. 
Ustilago Montagnei. Tul. (Beaksedge smut.) On seeds of Rhyncospora 
alba. Not common. 
Fig. 24. Infected plant. — 25. Spores magnified 460 diameters. 
Ustilago typiioides. B. and Br. (Reed smut.) On stems of the common 
reed. Autumn. Not uncommon. 
Ustilago Salyeii. B. and Br. (Cocksfoot smut.) On leaves of cocksfoot 
grass. Not common. 
Ustilago grammica. B. and Br. (Banded smut.) On stems of Air a 
aquatica. Not common. ^ 
Ustilago yinosa. Tul. (Oxyria smut.) On receptacles of Oxijria reni- 
formis. Uncommon. 
Ustilago utriculosa. Tul. (Utricle smut.) On utricles of various species 
of Polygonum. Autumn. Not uncommon. 
Fig. 33. Portion of infected plant of P. hydropiper. — 34. Section of 
smutted utricle. — 37. Spores magnified 460 diameters. — 35. Infected 
flower of P. persicaria magnified. — 36. Ditto section. ( Tulasne .) 
Ustilago flosculorum. Fr. (Floret smut.) On the florets of scabious. 
Not common. 
Fig. 30. Infected flower-head of field scabious. — 31. Central floret 
infected. — 32. Spores magnified 460 diameters. 
Ustilago receptaculorum. Fr. (Goatsbeard smut.) On the receptacles 
of goatsbeard. June and July. Common. 
Fig. 11. Infected receptacle of goatsbeard. — 12. Distorted floret mag- 
nified. — 13. Spores magnified 460 diameters. — 14, 15. Germinating 
spores ( Tulasne ) magnified 460 diameters. 
Ustilago antherarum. Fr. (Anther smut.) On the anthers of bladder 
campion, &c. 
Fig. 16. Infected flower. — 17. Swollen anther. — 18. Spores magnified 
460 diameters. 
EXPLANATION OF PLATE II. 
Fig. 1. Goatsbeard cluster-cups (. AEcidium tragopogonis ) on portion of plant. 
„ 2. Cups enlarged. — 3. Section magnified. 
„ 4. White-spored cluster-cups (AE. leucospcrmum ) on leaf of wood- 
anemone. 
„ 5. Portion enlarged. — 6. Cups magnified. 
„ 7. Ranunculus cluster-cups (AE. ranunculacearum ) on leaf of pilewort. 
— 8. A cluster enlarged. 
„ 9. Section of cups. 
„ 10. Nettle cluster-cups {AE. Urticce ) on nettle stem. — 11. Cups enlarged. 
„ 12. Berberry cluster-cups (AE. Berberidis ) on leaf of berberry. — 13. 
Portion of a cluster enlarged. — 14. Cups magnified. 
„ 15. Hawthorn cluster-cups (Rcestelia lacerata ) on leaf and fruit of haw- 
thorn. — 16. Portion enlarged. 17. Section of cups. — 18. Cells 
of peridium magnified 250 diameters.— 19. Single cell further 
magnified. 
Plate III. Embodied in description of species. 
