276 THE NORTH AMERICAN SLIME-MOULDS 



The spores of this species resemble closely those of the preceding, 

 but the sporangium is at sight different in appearance and propor- 

 tions and the capillitium not the same at all. The elaters are never 

 fusiform, the apices always abrupt in their acumination, and the 

 sculpture irregular and uneven. In form the elater resembles that 

 of T. scnbra. The description is drawn from specimens, N. A. F., 

 2495, with which, however, specimens received from Dr. Rex and 

 later collected exactly correspond. 



The elaters of uniform diameter, the apices abruptly narrowed to 

 a blunt point, turned to one side, will serve to distinguish this species 

 from the whole T. botrytis group, some forms of which it outwardly 

 resembles. 



We have beautiful specimens from the shores of Puget Sound. 



New York. 



12. Trichia erecta Rex 



1890. Trichia erecta Rex, Proc. Phil. Acad., p. 193. 



Sporangia gregarious, often in clusters of two or three together, but 

 generally single, nut-brown, checkered with broad, conspicuous yel- 

 low dehiscence bands, globose, ^ mm. wade, stipitate, stipe double 

 the sporangium, dark brown, solid ; capillitial mass bright yellow, the 

 elaters cylindric, 3-4 /i wide, terminating in apices short and smooth, 

 adorned with spirals, four, coarsely spinulose, winding unevenly or 

 even branching and so united to one another! spore-mass yellow, 

 spores by transmitted light pale, globose, minutely warted, 12 /n. 



Distinguished at sight by the peculiarly mottled peridium. T. 

 botrytis in its ochraceous forms sometimes shows tendency to the 

 same thing, but the checkered surface is here conspicuous. The elaters 

 resemble those of the preceding form, but are remarkably rough. 



Rare. Adirondack?, New York. 



13. Trichia decipiens (Pers.) Macbr. 



Plate IV., Figs. 2, 2 a, 2 b. 



1793. Lycoperdon pustllum Hedwig, .4bh., I., p. 35, Tab. iii., Fig. 2. 



1795. Arcyria decipiens Pers., Ust. Ann. Bot., XV., p. 35. 



1796. Trichia fallax Pers., Obs. Myc, I., p. 59, etc. 



