ELAPHOMYCETACEAE— TUBERACEAE 



145 



B. Ascoma sessile, the entire top opening and ex- 

 posing the columnar mass of vertical capillitium 

 and spores 



Trichocoma F 310; 6 



Family 61. ELAPHOMYCETACEAE 



8:863, 10:80, 11:441, 22:589; Fischer 311 



Ascoma hypogean, tuberiforni, woody, crustose or corneous, not spontaneously 

 dehiscent, peridium well developed; gleba loculate or veined, at last powdery; asci 

 globoid to ovoid, 1-8-spored; spores simple, typically dark and with a several- 

 layered wall. 



A. Gleba with sterile veins; asci normal; spores 



typically opaque; spore-wall thick, of several 



layers Elaphomyces 8:863, F 311; 38 



B. Gleba without sterile veins; spores light-colored, 



wall not thick and layered Mesophellia 7:56 



Family 62. TUBERACEAE 



8:872, 10:80, 11:442, 14:826, 16:808, 18:205, 22:590, 24:1147; Fischer 278 



Ascoma hypogean, tuberiform, very rarely epigean, fleshy or waxy to indurated, 

 not opening spontaneously; gleba typically lacunose or veined, never becoming 

 powdery, without capillitium; asci globose to cylindric, 1-8-spored; spores 1-celled, 

 hyaline or dark, often beautifully sculptured. 



Hyalosporae 



Spores 1-celled, hyaline, globose 



A. Gleba with one or more cavities, but not veined 



1. Asci cylindric or elongate 



a. Spores verrucose, spinose or reticulate 



(1) Ascoma broadly stipitate; canals or cham- 



bers closed 



(2) Ascoma not stipitate 



(a) Gleba with one or more chambers open- 



ing to the outside 

 X. Spores globose 

 y. Spores ovoid to elliptic 



(b) Gleba without canals opening to the out- 



side 



b. Spores smooth 



(1) Ascoma with a single large closed cavity 



(2) Ascoma with winding canals or irregular 



chambers 



(a) Canals reaching the surface 



X. Ascoma with a definite cavity into which 



the canals open 

 y. Ascoma without central cavity; gleba 



cerebro-convolute 



(b) Canals not reaching the surface; ascoma 



lanate 



2. Asci saccate, globoid to oblong 



a. Spores verrucose, spinose or reticulate, glo- 

 bose 



to elliptic 



Napomyces 



Pseudogenea 16:808 

 Genea 8:873; 38 



Hydnotryopsis 24:1150 



Hydnocystis 8:876; 38 



Barssia 



Pseudohydnotrya 16:608; 38 



Geopora 8:877 



