Trichia. 183 



advenula, but the latter differs in every other character. The 

 figure of the elater is copied from Rostafinski. 



(Rostafinski's Synonyms.) 



Lycogala contortum, Dit., in Sturm. Dent. Cr. FL, t. 5 (1817). 

 Trichia reticulata, b., Grev. Sc. Cr. Fl., t. 266 (1827). 

 Perichaena contorta, Fr., S. M., iii., 192 (1829). 

 Licea cmitorta, Wallr., Fl. Cr. Germ., n. 2110 (1833). 

 Hemitrichia contorta, Rost., ap Fckl. Syn., 2, Nach., p. 75 

 (1873). 



Trichia subfusca, Rex. 



Sporangia stipitate, simple, very rarely double or triple, 

 generally exactly spherical, exceptionally globose-turbinate, 

 about I of a mm. in diameter. Colour of sporangia, a dull 

 tawny brown above, shading to a dark brown at the base. 

 Stipes uniform in diameter, and equal in height to the diameter 

 of the sporangium, brown or brownish-black in colour, longi- 

 tudinally rugose and separated from the cavity of the sporangia 

 by the internal layer of the sporangium wall. Spores and 

 capillitium concolourous, of a bright yellow colour in mass/ 



Elaters cylindrical 3'5 4 p. in diameter, terminating generally 

 in a smooth elongated end 10 12 /A long, which is either sharp 

 or blunt, straight or curved to one side. Spirals four in 

 number, non-spinulose, winding more or less unevenly, with 

 interspaces as wide or wider than the thickness of the spirals. 

 Spores 11*5 12'5 ^ in diameter, delicately but distinctly wfirted. 



Adirondack Mts., New York. 



This Trichia is more nearly allied to some of the forms of 

 Tr. fragilis than to any other species. There seem, however, 

 to be sufficiently well-marked specific differences. In addition 

 to the different external characters, the elaters are undoubtedly 

 cylindrical in a majority of the specimens. Occasionally 

 individual sporangia are found in which the elaters are a little 

 thicker in the centre, narrowing slightly toward the ends, but 

 even these exceptions terminate abruptly in the same form of 

 ends as the true cylindrical elaters. Occasionally also, as with 



