DERMATEA. 339 



GENUS II. DERMATEA. Fries. 



Excipuluni somewhat corky, at first entirely closed, 

 then from urceolate becoming expanded, often erumpent, 

 scattered or csespitose, with the stems united into a 

 common stratum; sporidia large; epiphytal. (Plate X. 

 fig. 65.) 



Pycnidia and Spermogonia are found in some species. 



Name lip/ua, leather; from the texture. 



ARRANGEMENT OF THE SPECIES. 



A. Sporidia elliptic, 1 -septate . . . . species 1 



B. Sporidia oblongo-elliptic 



(a) Sporidia simple . . . . . . 2, 3 



(6) Sporidia becoming pseudo-septate ,, 4-9 



KEY TO THE SPECIES. 



Hymenium at first orange-red, then pale tan-colour : 



on pine-leaves . . . . . . . . . . nectrioides. 



Hymenium livid: on dead wood .. .. .. livida. 



Hymenium cinnamon-yellow : on dead wood . . cinnamomea. 



Hymenium orange-yellow : on beech . . . . Faiji. 



Hymenium dirty-yellow, becoming blown : on 



Portugal lamvl .. .. .. .. . Houghtonii. 



Hymenium reddish-brown : on Ulex 

 Hymenium rhubarb-colour : on wild rose . 

 Hymenium pale flesh-colour : on oak 

 Hymenium reddish clay-colour : ou cherry 



Ulicis. 

 rhabarbari/ta. 

 dryina. 

 Cera si. 



A. SPORIDIA ELLIPTIC, 1-SEPTATE. 



1. Dermatea Ulicis. Cooke. 



Csespitose or scattered, substipitate ; cups at first 

 turbinate, then open ; externally reddish-brown, fur- 

 furaceous ; hymenium darker, concave ; asci cylindracec- 

 clavate; sporidia 8, elliptic, uniseptate, brown, 12 x 5/* ; 

 paraphyses subclavate at the tips, and brownish. 



Dermatea Ulicis Cooke in " Grevillea," iii. p. 186. 



On dead twigs of Ulex. 



Cups i to 1 line broad ; the colour of ground coffee. 



Name Ulex, the genus to which gorse belongs ; 

 found on gorse. 



Shere, Surrey (Dr. M. C. Cooke). 



