310 THAXTEE. 



empty abortive vesicle-like spores which are conspicuous, for example 

 in E. canadensis. In many cases their broad projecting terminations 

 form a continuous margin about the spore-groups. Those of the latter 

 which are peripheral, may be further enveloped externally by a closely 

 woven layer of fine, thin-walled, hyphae, which may penetrate inward 

 to some extent, between the vesicles and spore-groups, entering the 

 spores themselves and filling them more or less completely. This 

 parasite seems similar to that which attacks E. lactiflna, E. fuegiana 

 ^nd other species. 



Endogone fuegiana Spegazzini. 

 (Figs. 33-34.) 

 Spegazzini (1887a), p. 6, No. 5; (1887b), p. 120. 



Through the courtesy of Professor Spegazzini I have had an op- 

 portunity to examine the type of this species collected on Staten 

 Island, Straits of Magellan. In its present condition the type does 

 not show all the characters mentioned in the original description which, 

 since the publication in which it appeared is rare, should perhaps be 

 quoted in extenso. 



■" Globoso vel elliptico repanda, extus alba, levis vel vix sub lente 

 valida flocculosa, parvula (2-5 mm. diam.), inferne saepius umbilicata 

 vel depresso-rugulosa centroque nodulosa vel subcicatricosa, uda 

 compactiuscula tenacella; sicca dura, fere cornea: cutis came arete 

 adnata persistens; caro sordide alba sub sectione fulvo-maculata, ob 

 punctulos rufos dense congestos: puncti 7-8 cellulares, globoso sub- 

 polygoni (180 fj. diam.), carne innati, nunquam confluentes: cellulae 

 punctulorum sphaeroideae e mutuo pressione saepius ovoideae (80 X 

 65 n) laeves, crasse tunicatae ad verticem precipue, inferne subapicu- 

 latae ac nodulo majusculo obscuriore donatae, fulvae vel subtestaceae. 

 Inodora, insipida." 



Found under moss on Staten and Clarence Islands, Straits of 

 Magellan. 



There has been some question as to the true position of this species, 

 owing to the characteristic arrangement of its spores, the "cellulae" 

 of the above description, which are more or less definitely and com- 

 pactly associated in small groups of six or usually more, Figure 33, 

 separated by variably distinct strands of compact parallel hyphae, an 

 arrangement which gives an irregular and rather faintly areolate 

 appearance to sections of the gleba. This has led to the suggestion 

 that the plant might be an immature condition of some tuberaceous 



