collection of Miss Woolhouse, of Sheffield, who has kindly per- 
sented to the Dublin Herbarium that from which our figure has 
been prepared. Miss Woolhouse is unable to say by whom the 
specimens were found, and I therefore dedicate the species to her, 
from whom I obtained all the materials for its history that I at 
present possess. In the pureness and intensity of its rose-colour 
this species differs from all other Porphyre known to me, and in- 
deed at first sight it might pass for some Mtophyllum, but for 
the peculiar glossy surface which is so characteristic of Porphyre, 
and which exists only in a very minor degree in Mtophyllum. 
he frond adheres more closely to paper than other Porphyre, 
and does not so greatly shrink in drying. Except in the ex- 
treme tenuity of the membrane, it offers no peculiarity of struc- 
ture. 
Fic. 1. Porpuyra Woo.nousit#,—the natural size. 2. Part of the membrane 
ina young state. 3. The same in a more advanced stage; the endo- 
chrome beginning to change into spores. 4. The same, where quaternate 
spores are fully formed. 5. Endochromes of various stages, and _ perfect 
spores :—magunified. 
(er 
to) 
