292 



THAXTER. 



Dussii and A. coccogcna; to Professor Carlos Spegazziiii for communi- 

 cating the types of Endogone juegiana and E. argcutiua; and to jNIiss 

 E. A. Wakefield for opportunity to see Berkeley's types of Endogone 

 ansirolis and GlazicUa vesiculosa. 



Index. 



Ackermannia 



coccogena 333 



Dussii 329, 333 



Endogone 



arenacea 317 



argentina 321, 324 



australis 312, 313 



borealis 318 



canadensis . . . 317, 310, 318 

 fasciculata . . . 308, 309, 311 

 fulva 312, 317, 319, 320, 322, 326 

 fuegiana . . 303, 304, 309, 310 

 incrassata . 305, 293, 304, 316 



lactiflua 



306, 304, 308, 310, 312-314 



lanata 306 



lignicola 319 



Ludwigii 298, 301 



macrocarpa 312, 307, 315, 321, 326 

 malleola . . 323, 297, 322, 324 

 microcarpa 315, 297, 307, 323, 326 



Moelleri 319, 320 



multiplex 301, 304, 307, 317, 331 

 Pampaloniana . . . . 314, 313 



pisiformis 



298, 295-297, 304, 323, 327-8 



pulvinata 319, 321 



radiata 316, 305 



reniformis 321 



sphagnophila .... 299, 301 



tenebriosa 314, 326 



Torrendii 323, 324 



Tozziana 326, 291 



tuberculosa 



293, 302, 303, 305, 311, 331 



vesiculifera 309, 331 



Endogone xylogena . . . 301, 300 



Endogonella borneensis . . . 334 

 Glaziella 



abnormis ....... 338 



aurantiaca 334 



ceramichroa 338 



splendens 338 



sulphurea 338 



vesiculosa 334 



Glomus 



macrocarpus 312 



microcarpus 315 



Hypomyces alboluteus .... 334 



Paurocotylis fulva 319 



Protomyces xylogenus .... 300 

 Sclerocystis 



coccogena 333 



coremioides . . . 328, 331, 332 



Dussii 329, 328 



pubescens 326 



Sphaerocreas 



pubescens 326, 301 



javanicum . . . 328, 327, 329 



Dussii 329 



coccogena 333 



Stigmatella pubescens .... 326 



Xenomyces ochraceus . . 328, 329 

 Xylaria 



aurantiaca 334 



splendens 338 



The fungi which are grouped in this assemblage of somewhat 

 diverse forms are, in general, rather infrequently met with; owing in 

 part to their apparent rarity, and partly to the fact that certain of the 

 species, at least, are truly hypogaeous, and may develop at a depth of 

 several inches below the ground, or beneath thick mats of Sp hagna or 

 other mosses. While types of this sort are thus usually encountered 

 by accident, or through the acquisition of what may be called a 

 "hypogaeous instinct" which may enable one, after experience, to 

 judge by various indications what situations are the most promising 



