DERMATEA. 339 



Genus II. — Dermatea. Fries. 



Excipulurn somewhat corky, at first entirely closed, 

 then from urceolate becoming expanded, often erumpent, 

 scattered or crespitose, with the stems united into a 

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

 fig. 65.) 



Pycnidia and Spermogonia are found in some species. 



Name — Stpfia, leather; from the texture. 



Arrangement of the Species. 



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



B. Sporidia oblongo-elliptic 



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



(b) 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 . . . . . . livicla. 



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



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



Hymenium dirty-yellow, becoming brown : on 



Portugal laurel .. .. .. .. .. Houghton ii. 



Hymenium reddish-brown : on Ulex . . . . Ulicis. 



Hymenium rhubarb-colour : on wild rose . . . . rhabarbarina. 



Hymenium pale flesh-colour : on oak . . . . dryina. 



Hymenium reddish clay-uolour : on cherry . . Cerasi. 



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). 



