GENERAL CLASSIFICATION OF TUBEROIDES. 



GROUP VI.— TUBEROIDES, VITT. 

 Arrangement of Orders (3). 



42. ELArHOMYCETACEvE — Gleba or spore-bearing tissue traversed by silky filaments. 



43. TuBERACE^E — Glelja traversed by brancbeJ filaments, or wiMi cavities. 



44. Endogonace^k — Gleba destitute of internal cavities, contiiuions. 



Order XLII.— ELAPnoMYCETACi:^, Tul. 



Genus (1) — 



280. Elaphoinyccs, Nees. 



Order XLIIL— Threr aCe^e, Fries. 



Genns (1)— 



281. Stepliensia, Tul. 



Order XLIV. — Endogonace.e, Fries. 



Genus (1)— 



2'^2. I'^udoeono, Link. 



