THAXTER. 



Dimeromyces brachiatus nov. sp. 



Male individual. Receptacle hyaline, subtriangiilar above its 

 stalk-like base, the lumen of which is nearly or completely obliterated; 

 consisting of from fi^'e to seven cells obliquely superposed, those 

 between the basal and terminal cells much flattened and each asso- 

 ciated with a corresponding simple secondary appendage : the terminal 

 cell larger, somewhat rounded distally, bearing the primary appendage 

 distally and the single antheridium laterally. Primary appendage 

 simple, rather short, hardly tapering, with blunt rounded apex, and 

 consisting of a small almost square or slightly flattened basal cell, 

 followed by one to two flattened yellowish browTi cells distinguished 

 by dark septa; the rest of the appendage a single elongate cell. wSec- 

 ondary appendages superposed in a single series, somewhat divergent 

 and mostly in contact throughout; similar to the primary appendage, 

 the basal cell large, the flattened suffused cells one to three in number. 

 Antheridium solitary, arising just above the base of the uppermost 

 secondary appendage, its basal or stalk-cell somewhat larger than that 

 of the latter, subtriangular; the venter and neck relatively short, 

 somewhat curved; the antheridial cells about eight in number, the 

 basal cells clearly defined, the neck rather abruptly distinguished, but 

 rather short and strongly bent. Receptacle 46 X 12 ix. Foot 18 /x. 

 Appendages 28 X 4 ju. Antheridivmi 27 X 9 /x. 



Female individual. Hyaline or faintly yellowish. Receptacle 

 similar to that of the male, consisting of eight to nine cells; the termi- 

 nal one small, triangular, bearing the primary appendage terminally; 

 the remaining cells above the basal cell bearing either secondary 

 appendages, perithecia, or secondary appendiculate axes: the terminal 

 cell always bearing a secondary axis laterally, the subterminal giving 

 rise to the first perithecium and the cell next below to a secondary 

 appendage, while the remaining cells may produce either of these 

 structures without regularity. Primary and secondary appendages 

 similar to those of the male, but smaller. Secondary axes greatly 

 elongated, suberect, slightly flexed, of about the same diameter 

 throughout, consisting of a single series of a hundred cells more or less 

 very thick walled, arranged in vertical pairs, the successive pairs 

 slightly displaced from right to left; the upper cell of each pair asso- 

 ciated distally and externally with a snuill simple, closely appressed 

 appendage similar in all respects to the secondary appendages of the 

 male, and alternating right and left from successive pairs. Perithecia 



