189 



APPENDIX. 



CLASSIFICATION & DESCPJPTIOXS OF FUNGI 

 CONTAINED IN THIS VOLUME. 



"♦<>♦- 



-SICIDIACEI. 



Peridium elongated — 



separating in threads . . . . Roestelia. 



rupturing irregularly . . . . Feridermium. 



Peridium abbreviated, or semi-immersed . JEcidAum. 



Peridium immersed . . . . . . Endophyllum. 



ECESTELIA, Reb, 



Feridium elongated, at length opening by lateral fissures, or a 

 terminal lacerated mouth. Spermogonia on the opposite 

 surface, on the same or on different leaves. 



Roestelia cancellata, Reb. Peah-leaf R^stelia ; spots 

 yellow, then red, prominent ; peridia split to the base into lacinise, 

 which remain united at the apex. — On Pear leaves. Not very 

 common. Autumn. (Plate 11. figs. 20, 21.) 



KcBstelia cornuta, Tul. Horn -like Pcestelia; spots 

 rusty-brown; peridia cylindrical, slightly curved, yellowish- 

 brown ; spores greyish, at length brown.— On the under surface 

 of the leaves of Mountain Ash. Not common. August. (Plate II. 

 figs. 18, 19.) 



Roestelia lacerata, Tul. Lacerated Rcestelia ; peridia 

 clustered in tufts, brown, elongated, splitting to the base in 

 segments ; spores light brown. — On the under surface of the 

 leaves, and on the petioles and fruit of the Hawthorn. Not 

 uncommon. May to July. (Plate II. figs. 22, 26.) 



