TUBERACEAE 97 



( i ) Asci 2-4-spored ; spores with recurved spines 



Terfeziopsis 16:816 



(2) Asci 8-spored 



x. Hollows or canals not reaching the surface 

 (x) Gleba with irregular stellate hollows 



Myrmecocystis 16:809 

 (y) Microscopic ; gleba central, lax 



Lilliputia 16:816 

 y. Hollows or canals reaching the surface 



Hydnobolites 8:879 



b. Spores smooth 



(1) Gleba of numerous locules ; epigaean, parasitic on fungi 



Eoterfezia 18: 205 



(2) Hypogaean 



(a) Ascoma brown villous Phaeangium 11:442 



(b) Ascoma not villous Balsamia 8: 877 

 fl. Gleba with veins, solid or also lacunose 



1. Veins of two colors; spores globose, smooth 



Stephensia 8: 880 



2. Veins all of one color 



a. Spores globose, roughened 



(1) Gleba with distinct veins; asci mostly 2-3-spored 



Delastria 8: 904 



(2) Gleba marbled with brown spots; asci 3-4-spored 



Piersonia 16: 812 



b. Spores ellipsoid, smooth 



( 1 ) Spores apiculate at each end, limoniform 



Leucangium 8:899 



(2) Spores not apiculate 



(a) Asci 8-spored, broadly stipitate Tirmania 11:444 



(b) Asci 6-8-spored. not stipitate Picoa 8:899 



Phaeosporae 



Spores dark, i-celled 



I. Gleba without veins; typically with hollows or canals 



1. Spores globose, roughened 



a. Asci linear or cylindric 



(1) Gleba with one or more hollows Gyrocratera 16:815 



(incl. Cryptica 10:82) 



(2) Gleba homogeneous, lax Ruhlandiella 17: 241 



b. Asci broad, oblong Hydnotrya 8:879 



2. Spores ovoid, smooth Genabea 8:878 

 tl. Gleba with veins 



1. Veins of two colors 



a. Some veins white Pachyphloeus 8:881 



b. Xo veins white Tuber 8:882 



2. Veins of one color 



