GOMPHILLUS.] B350MYCETEI. 107 



Series II. Cladodei Nyl. Syu. i. (1860) p. 174. 



Thallus either horizontally expanded and crustaceous, or usually 

 erect and foliaceous. Apothecia terminal on podetia. rarely sessile 

 and without podetia, biatorine, rarely lecanorine (mazsedium none); 

 spores usually 8nse, oblong, simple, or elongate and septate, very 

 rarely murali-divided. 



The genera in this series are very diverse, both in external form and 

 internal structure ; but there are various important points of connection 

 which warrant their being thus associated. This arrangement is more 

 natural than one which places some of them far apart from the others. 



Tribe III. BJEOMYCETEI Nyl. Mem. Soc. Cherb. iii. (1855) 

 p. 168 (ut Bceomycei) ; Bull. Soc. Linn. Norm. se'r. 2, vi. (1872) 

 p. 320. 



Thallus various, either horizontally ex- 

 panded and crustaceous, or also vertically 

 ascending and podetiiform. Apothecia 

 either sessile and biatorine, or depressed i 

 and difform, or podetiiformi-stipitate, pale 

 or reddish ; spores 8na3, oblong, simple or 

 1-3-septate, colourless. Spermogones with 

 arthrosterigmata, very rarely with simple 

 sterigmata. 



This tribe, as observed by Nylander (Syn. 

 i. p. 174), is composed of genera differing con- 

 siderably in the thallus and apothecia. The 

 affinity of these genera, however, seems to be 

 with each other in this Series, rather than 

 with the Lecanorei or Lecideei, in which, for 

 the most part, they have been variously placed 

 by authors. ,'" r 



26. GOMPHILLUS Nyl. Mem. Soc. 1M 



Cherb. iii. (1855) p. 1866; Syn. i. p. 175. ^gM j 



Thallus very thin, consisting of spheri- a \' Jjr/ H 



cal gonidia of moderate size, and of irre- G 



gularly filamentose elements gelatinosely -^-" 



conglutinate. Apothecia stipitate, clavato- n 

 capitate, corneous ; spores 8na3 (the thecae 



not distinct), filiform, multiseptate, para- Fig. 29. 



physes not discrete ; hymenial gelatine not Gomphillus calicioides Nyl. 



tinged with iodine. Spermogones some- "^^"^ 90.' b!^ 



what prominent; sterigmata simple, mi- shorter spore, x 500 c. 



nute ; spermatia sleudc-r, cylindrical, Section of a spermogone, 



straight, X oO. d. Sterigmata 



and spermatia, x 500. 



This peculiar genus differs in many ways 

 from the others belonging to this tribe. " Though showing a slight 



