APPENDIX. 



CLASSIFICATION & DESCRIPTIONS OF FMG I 

 CONTAINED IN THIS VOLUME. 



JBCIDIACEI. 



Peridium elongated — 



separating? in threads Roestelia. 



rupturing irregularly Peridermium. 



Peridium abt)reviated, or semi-immersed ... /Eciduim. 



Peridium immersed ... ... Endophyllum. 



KffiSTELTA, Beh. 



Feridiui)i elongated, at length opening by lateral fissures, or a 

 terminal lacerated mouth. Spermogonia on the opposite 

 surface, on the same or on dillerent leaves. 



Boestelia cancellata, Reb. Pear-leaf Rcestelt a ; spots 

 yellow, then red, prominent ; peiidia split to the base into lacinia, 

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

 common. Autumn. Supposed to be a condition of Podisoma 

 Sabince. (Plate II. figs. 20, 21.) 



RcBstelia cornuta, Tul. Horn-like Mcestelia; 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. Sup- 

 posed to be a condition of Gymnosporangium Juniperi. (Plate 

 II. figs. 18, 19.) 



RcEstelia lacerata, Tul. Lacerated Pcestelta ; peridia 

 clubteied in tutts, 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. Supposed to be a condition of 

 Podisoma Juniperi. (Plate II. figs. 22, 26.) 







