172 



LYCOPERDALES 



X. Endoperidium papery, with apical 

 openings; capillitial threads smooth, 

 long acuminate 



y. Endoperidium thick, opening by irregu- 

 lar lobes; capillitial threads with spiny 

 branches 

 2. Gleba with distinct sack-like areas or peridioles 



a. Gleba with peridioles 



(1) Stipe with persistent cupulate volva; capil- 



litium present 



(2) Stipe not volvate; capillitium rudimentary 



b. Gleba without peridioles, finally powdery 



(1) Peridium stalked, corky, opening irregu- 



larly; capillitium present 



(2) Peridium sessile or nearly so 



(a) Peridium with two walls, outer firm, 



splitting stellately, the inner evanes- 

 cent 



(b) Peridium with one wall 



X. Wall not distinct, fleshy; capillitium 



lacking; spores spiny 

 y. Wall more or less distinct, leathery or 

 membranous; capillitium rudimentary; 

 spores smooth or warted 

 (x) Gleba with saccules; peridium more 

 or less contracted below, not on 

 a subiculum 

 (y) Gleba with elongate seriate cham- 

 bers; peridium with a broad base 

 arising from a stroma-like subic- 

 ulum 

 ;. Peridia numerous on a stroma, the latter often 

 stipitate; mouth fimbriate-dentate; capillitium 

 ramose 



Bovista 7:96. F 319; 47 



Mycenastrum F 320 



Dictyocephalus 17:238 

 Pisolithus 7:146, F 338; 47 



Phellorina 7:145, F 334 



Sclerangium F 338 



Corditubera 14:266, F 335 



Scleroderma 7:134, F 336; 47 



Lycogalopsis F 312 



Broomeia 7:93, F 324; 47 



Family 78. HYMENOGASTRACEAE 



7:154; Fischer 309 



Hypogean, rarely if ever truly epigean; gleba fleshy to cartilaginous or some- 

 what gelatinous, not powdery, but more or less putrescent, usually loculate or 

 with trama-plates, the peridium with wall sometimes poorly developed or even 

 lacking at maturity, irregularly globoid, sometimes with short stalk-like base or 

 rhizoids, astomous, the surface merely cracking or breaking away, or the gleba 

 putrescent; capillitium lacking; spores 1-celled, hyaline or colored. 



A. Trama-plates arising radially from a basal col- 

 umella-like mass; peridium wall separating 

 readily from gleba, sometimes lacking 

 1. Peridium wall present 

 a. Peridium volvate 



(1) Peridium silky, reticulate-sulcate; volva 



gelatinous; spores yellow, globose, 

 crested 



(2) Peridium waxy-gelatinous, not sulcate; 



spores hyaline 



Clathrogaster 16:250 

 Torrendia 17:241 



