30 THAXTER. 



Rickia Danaealis nov. sp. 



Hyaline; form sometimes short-triangular below the free distal half 

 of the peritheeium. Receptacle triseriate; the basal cell relatively 

 large and broad, somewhat intruded between the two marginal cells 

 above it, or more often adjusted to the basal cell of the anterior series; 

 that of the posterior tapering to a narrow contact base: anterior series 

 consisting of usually seven or eight cells, somewhat irregular in outline, 

 the three or four distal ones smaller, lying beside the lower third or 

 more of the peritheeium; all, except the lowest, cutting off one cell or 

 two cells irregularly superposed or lying side by side, which bear, the 

 lower ones usually antheridia, the upper usually appendages : posterior 

 series similar to the anterior, consisting of usually five or six cells; the 

 lowest larger than the corresponding cell of the anterior series, the 

 cells of both series above them asymmetrically disposed; the series 

 terminated by the free, or almost wholly free, stout, divergent base of 

 the primary appendage: median series consisting of five or six cells, 

 often as large as those of the posterior series; the four or five upper, 

 and sometimes part of the lowest,- lying beside the peritheeium; the 

 uppermost distally free between the peritheeium and the base of the 

 primary appendage; the basal one intruded somewhat between the 

 second cells of the two marginal series, or between the second posterior 

 and the third anterior marginal cells. Appendages relatively long 

 and divergent; hyaline, becoming tinged with brown, especially at 

 the base; straight, nearly cylindrical, tending to form two distal 

 symmetrically divergent tufts; the primary appendage longer, more 

 deeply suffused. Antheridia of the normal type; hyaline, slightly 

 curved; the necks rather short and well distinguished, usually in 

 pairs, arising from the second and third, sometimes also the fourth, 

 cells of the anterior series. Peritheeium subtended by a well marked 

 stalk-cell, somewhat lateral, two thirds to more than one half free on 

 both sides, thick-walled, nearly straight, or more or less distinctly 

 bent distally; the middle third of the free portion slightly convex along 

 the posterior margin; the tip otherwise hardly differentiated, sorne- 

 what asymmetrically conical, tapering to a blunt point. Spores about 

 36 X 3.6 M- Perithecia about 75-95 X 28-32 fi. Antheridia 16 X 

 5.5 ju- Appendages, lower 20 ix the upper to 65 /x X 7 /x. Primary 

 appendage to 75 [x, its base about 18 X 10 fx. Total length to tip of 

 peritheeium 120-190 X 45-60 /x. 



On various parts of Danae Senegalensis Gerst., No. 2570, Kamerun. 



