96 ONYGENACEAE— TUBERACEAE 



Phaeodictyae 



Spores dark, muriform 

 I. Ascomata applanate-tuberculiform, black Cookella 8:846 



Family 55. ONYGENACEAE 



8 : 861, 10 : 80, II: 440, 16 : 807 



Ascomata subglobose, sessile or stipitate, membranous, fragile, epizoic ; gleba 

 waxy, then pulverulent; asci 8-spored, globose, evanescent; spores continuous, sub- 

 hyaline. 

 A single genus Onygena 8:861 



Family 56. ELAPHOMYCETACEAE 

 (ind. CENOCOCCACEAE) 



8:863, 10:80, 11:441 

 Ascomata hypogaean, woody, crustose or carbonous, more or less globose, inde- 

 hiscent, finally producing a powdery spore mass or gleba; asci l-8-spored, some- 

 . times spurious. 

 I. Gleba interwoven with silky threads; asci normal 



Elaphomyces 8:863 

 TI. Gleba without capillitium; asci spurious, cell-shaped 



Cenococcum 8: 871 



Family 57. TUBERACEAE 

 (incl. ENDOGONACEAE, EOTERFEZIACEAE) 



8 : 872, 10 : 80, 11: 442, 14 : 826, 16 : 808, 18 : 205 

 Ascomata hypogaean, rarely epigaean or parasitic, fleshy or waxy hardened, more 

 or less globose, indehiscent ; gleba never becoming a powdery mass, typically veined 

 or lacunose, rarely continuous ; asci l-8-spored, rarely spurious. 



Hyalosporae 



Spores hyaline, l-celled, globose to elliptic 



I. Gleba without veins, but with one or more cavities 



1. Asci linear or elongate 



a. Spores verrucose or roughened 



(i) Spores globose Pseudogenea 16:808 



(2) Spores ovoid to elliptic Genea 8:873 



b. Spores smooth 



(i) Gleba with a single large cavity Hydnocystis 8:876 



(2) Gleba convolute lacunose 



(a) Densely lanate; canals not produced to surface 



Geopora 8: 877 



(b) Not lanate ; canals produced to surface 



Pseudohydnotria 16 : 808 



2. Asci globose to oblong 



a. Spores roughened or alveolate, globose 



