114 



PEZIZALES 



X. Apothecia sunken or grown to the thal- 



lus on the whole underside Peltigeraceae p. 123 



y. Apothecia typically superficial when 

 mature, not attached broadly 

 (x) Apothecia with proper exciple Lecideaceae p. 124 



(y) Apothecia with thalline exciple Parmeliaceae p. 127 



Family 42. DERMATEACEAE 



Rehm 241 



Apothecia innate at first, then erumpent or superficial, rounded or angled by 

 mutual pressure, rarely one-sided or clavate, opening circularly, mostly leathery or 

 horny, brownish to black, separate or cespitose and then often with a stroma-like 

 base; hypothecium usually well-developed, thick; asci regularly cylindric and 8-spored, 

 paraphyses present, various; spores various. 



This family is to be distinguished from the closely related Tryblidiaceiae with 

 rounded apothecia chiefly by the fact that the opening is circular instead of lobed. 

 Lobes or teeth occur in one or two genera with very large apothecia, but all such 

 forms appear to belong properly in the Pezizaceae, as Rehm has placed them, and 

 they are retained here only because of their more or less leathery consistence. 



Hyalosporae 



8:547, 10:36, 11:422, 14:794, 16:782, 18:121, 22:710, 24:1224 



Spores 1-celled, hyaline, globose to oblong 



A. Apothecia large, usually stalked or radicate at base 



1. Apothecia ear-shaped, more or less vertical 



a. Spores globose 



b. Spores ovoid to oblong 



2. Apothecia urceolate or turbinate 



a. Apothecia stalked 



(1) Exciple and hypothecium prosenchymic 



(2) Exciple and hypothecium parenchymic 



b. Apothecia sessile; exciple parenchymic, hypo- 



thecium prosenchymic 



B. Apothecia small, sessile or substipitate 



1. Apothecia on a stromoid base 



a. Ascus-pore blue with iodin; spores often 



1-2-celled 



b. Ascus-pore not blue with iodin 



(1) Margin thick sulcate, forming claw-like 



projections over disk 



(2) Margin normal 



2. Apothecia without a stromoid base 



a. Asci 8-spored 



(1) Spores globose 



(2) Spores ovoid to oblong 



(a) Paraphyses lance-shaped, pointed 



(b) Paraphyses filiform or branched 



b. Asci many-spored, or 8- and many-spored 



Midotiopsis 18:121 

 Midotis 8:547 



Urnula 8:548, R 974; 35 

 Choriactis 18:121 



Scytopezis 18:122 



Dermatea 8:550, R 246; 26 



Godroniopsis 

 Pezolepis 



Encoeliella 



Cenangiopsis 



Cenangium 8:556, R 219; 26 



Tympanis 8:578, R 264; 26 



Phaeosporae 



16:764, 18:127, 22:715, 24:1230 

 Spores 1-celled, dark, ellipsoid 

 Apothecia coriaceous, mostly cespitose Phaeangium 16:764 



