If there should still be any hesitation whether there is in this pursuit sufficient of the element of variety, for those who do not desire to pursue the subject into its deepest scientific recesses, to render it available for them, let them go to a good public library, such as that of the British Museum, and inquire for the large illustrated work by Corda, entitled “Icones Fungorum,” or the more recent volumes by Tulasne (Selecta Fungorum Carpologia), and examine the figures of microscopic fungi in either of those works, and decide for themselves.
APPENDIX A.
CLASSIFICATION & DESCRIPTIONS OF FUNGI CONTAINED IN THIS VOLUME.
ÆCIDIACEI.
| Peridium elongated— | |
| separating in threads | Rœstelia. |
| rupturing irregularly | Peridermium. |
| Peridium abbreviated, or semi-immersed | Æcidium. |
| Peridium immersed | Endophyllum. |
Rœstelia, Reb.
Peridium elongated, at length opening by lateral fissures, or a terminal lacerated mouth. Spermogonia on the opposite surface, on the same or on different leaves.