146 



TUBERALES 



(1) Asci 2-4-spored; spores with recurved 



spines 



(2) Asci 8-spored 



b. Spores smooth, ellipsoid 



(1) Ascoma hypogean, large; gleba with ir- 



regular canals 



(a) Canals reaching the surface 



(b) Canals not reaching the surface 



(2) Ascoma epigean, on fungi; gleba with 



radiate locules 

 B. Gleba solid, typically with veins, sometimes lo- 

 cules also 



1. Spores reticulate or alveolate; asci 2-4-spored 



a. Gleba with distinct veins 



b. Gleba marbled with brown spots 



2. Spores smooth; asci 2-8-spored 



a. Spores globose; asci cylindric 



b. Spores ovoid to ellipsoid; asci globoid to cla- 



vate 



(1) Ascoma villous; gleba not veined 



(2) Ascoma not villous; gleba veined 



(a) Ascoma narrowed to the basal my- 



celium, whitish, smooth; asci 8-spored, 

 with a broad stalk 



(b) Ascoma not narrowed or with basal 



mycelium, dark, verrucose; asci 4-8- 

 spored, not stalked 



Terfeziopsis 16:916 

 Hydnobolites 8: 879 



Pseudobalsamia 22:591 

 Balsamia 8:877; 38 



Eoterfezia 18:205 



Delastria 8:904; 38 

 Piersonia 16:812 



Stephensia 8:880; 38 



Phaeangium 11:442 



Tirmania 11:444 



Picoa 8:899 



Phaeosporae 



Spores 1-celled, dark, globose to elliptic 



A. Gleba with canals or chambers, not veined 



1. Spores verrucose, globose; asci ovoid to cylin- 



dric 



2. Spores smooth, ovoid 



B. Gleba more or less solid, veined 



1. Veins of two colors 



a. Some veins white; asci globoid to ellipsoid, 



mostly 1-4-spored, arranged irregularly 



b. No veins white; asci clavate to cylindric, 8- 



spored, arranged more or less regularly 



2. Veins of one color 



a. Asci elongate, with paraphyses, in palisade- 



like meandering veins 



b. Asci typically globose to oblong, without 



paraphyses, arranged irregularly in masses 

 separated by veins 



Hydnotrya 8:879; 38 

 Genabea 8:878 



Tuber 8:882; 38 

 Pachyphloeus 8:881 



Choeromyces 8:900 



Terfezia 8:902; 38 



