Trichia 



225 



Elaters 4-6 y. wide; spores very closely reticulate; border 

 almost none; sporangia sessile. 

 Spores minutely warted (sometimes minutely reticulate in 

 T. decipiens). 

 Spirals of elaters two. 

 Spirals of elaters three or more. 



Elaters tapering shortly at the ends. 



Sporangia sessile; wall pale or dark brown, uni- 

 formly thickened with granular matter; spirals 

 of elaters distinct or faint. 

 Sporangia sessile; wall thick, black. 

 Sporangia sessile; wall thin, without granular 



thickenings; spirals of elaters often faint. 

 Sporangia stalked; wall membranous, thickened 

 in rounded areas with brown granular de- 

 posits; elaters spinose. 

 Sporangia stalked; elaters smooth. 

 Elaters smooth, very gradually tapering at the 

 ends; sporangia stalked. 

 Stalk filled with spore-like cells. 

 Stalk brown, opaque, not filled with spore-like 



cells. 

 Stalk red or brownish red, translucent when 

 mounted. 



5. T. scabra 



6. T. varia 



7. T. conlorta 



8. T. alpina 



9. T. I lite seen s 



10. T. erecta 



11. T. subfusca 



12. T. decipiens 

 \3. T. Bolrytis 

 14. T. floriformis 



1. Trichia favoginea (Batsch) Pers. Neues Mag. 

 1794. 



Bot. 1: 90. 



Lycoperdoti favogineum Batsch, Elench. Fung. Contin. 1: 257. 1786. 



Plasmodium white (Lister) or yellow (Macbride). Sporangia 

 usually sessile, globose, obovoid, cylindrical, or clavate, crowded 

 on a membranous h\'pothallus, 0.6 to 0.7 mm. broad, 0.7 to 1.9 

 mm. high, shining ochraceous yellow; mass of spores and capil- 

 litium orange-yellow; sporangial wall membranous, thickened 

 with delicate, irregular striae. Capillitium consisting of long, 

 cylindrical elaters 6-8 jx diam., smooth or with scattered spines, 

 thickened with four or five spiral bands 1 n wide, the intervals 

 between them crossed by many slender ridges running parallel 

 with the length of the elater ; ends of the elaters conical, terminat- 

 ing in a smooth point, 3-8 n long. Spores yellow, reticulate with 

 narrow, high bands forming a net with three to five meshes to the 

 hemisphere, 13-15 ^i diam., including the border of 1.6-2 n width. 

 (Plate 13, fig. 3.) 



Type locality : Germany. 



Habitat: On dead wood. 



