REVISION OF ENDOGONEAE. 297 



" E. pisiformis, irregulariter globosum, lutescens membrana floccosa 

 inductum. Magnitudine pisi. Fibrillis paucis muscis adnascitur in 

 silvis abietinis. Membrana floccosa inducta tenuissima, sporangium 

 intus colore lutescente Tuberis, at non venosum, sed grumoso granu- 

 losum. Segment! transversalis particulam, V. fig. 52a, sporangiola 

 cum sporidiis ibid. lit. b." 



The figure "a" referred to, shows a portion of the spore-mass covered 

 by a radiating sterile tomentum (membrana floccosa tenuissima) of 

 tapering filaments, evidently more or less diagrammatically repre- 

 sented. The spores, which are shown embedded in the general mass 

 (sporangium), are not subspherical, but more nearly elliptical, with 

 the exception of those which may be assumed to be viewed end on. 

 Figure " b" shows several of these spores (sporangiola) which have been 

 forcibly and irregularly broken, as is evident from the rent through 

 which the contents is represented as emerging. This contents is made 

 up of granules indicated by single black dots, the "sporidia minuta" 

 of the description, which bear no resemblance to resting spores and 

 could not by any stretch of the imagination be regarded as intended to 

 represent the large thin-walled spores of the sporangial type. This 

 description is suflftciently clear, although, like most descriptions, in- 

 complete, and taken in connection with the figures, which are not bad 

 for the period, afford a reasonably satisfactory basis for determination. 



Since E. pisiformis is the generic type, it is a matter of much im- 

 portance to determine with some approach to accuracy, to which of 

 the European forms now recognized it may be assumed to corre- 

 spond. 



Bucholtz, who may have seen transcriptions, only, of the original 

 paper, and may have been misled by the confusing use of the terms 

 sporangia sporangiola and sporidia, has assumed that the classic 

 specimen collected near Naples by Vittadini and distributed in the 

 Fungi Europaei No. 2516 under the name Endogonc microcarpa, was 

 to be regarded as the true pisiformis. It seems quite impossible, 

 however, to reconcile the characters of the Vittadini form, which is the 

 Endogonc malleola of Harkness, with the account given by Link whose 

 figures alone are sufficient to preclude the possibility of such a con- 

 clusion. 



The more important points brought out by Link's account indicate 

 that he was dealing with the type of sporocarp usually found in Endo- 

 gonc, consisting of yellow ellipsoid thick walled spores with coarsely 

 granular contents, associated with smaller vesicular structures, and 

 irregularly disposed in a solid compact rounded mass surrounded by 



