TRICHIA 281 



g. Spirals even, regular 2. T. inconspicua 



g. Spirals irregular 1. T. contorta 



h. Elaters with two spirals 8. T. varia 



h. Elaters with three or more spirals i 



i. Spores finely reticulate 9. T. scabra 



i. Spores coarsely, often imperfectly reticulate j 



j. Spore bands narrow, not pitted 10. T. favoginea 



j. Spore bands pitted k 



k. Spore bands narrow; elaters with long, slender tips 11. T. pulchella 



k. Spore bands broad; tips of elaters short / 



/. Spores 13-15/x, reticulation complete 12. T. affinis 



I. Spores 10-13 n, reticulation broken 13. T. persimilis 



m. Spores reticulate n 



m. Spores minutely warted o 



n. Reticulations prominent, coarse 14. T. verrucosa 



n. Reticulations delicate 17. T. decipiens 



o. Elaters spiny 15. T. erecta 



o. Elaters without spines p 



p. Elaters of uniform thickness with short tips 16. T. subfusca 



p. Elaters tapering very gradually to the long, slender tips q 



q. Spore-mass ochraceous; stem opaque 18. T. botrytis 



q. Spore-mass brick-red; stem translucent 19. T. floriformis 



1. Trichia contorta {Ditmar) RosL 



Mon. 259. 1875. 

 PI. XVIII, Figs. 490, 491; PI. XFX, Fig. 495. 



1813. Lycogala contortum Ditmar, in Sturm, Deutsch. Fl. Pilze 1 : 9. 



1829. Perichcena contorta (Ditm.) Fr., Syst. Myc. 3 : 192. 



1833. Licea contorta (Ditm.) Wallr., Fl. Crypt. Germ. 2 : 345. 



1874. Trichia reniformis Peck, Rept. N. Y. State Mus. 26 : 76. 



1881. Trichia heterotrichia Balf. fil., Grev. 10 : 117. 



1893. Trichia pachyderma Cel. fil., Myx. Bohm. 38. 



1893. Trichia intermedia Cel. fil., Myx. Bohm. 38. 



1903. Oligonema fulvum Pav. & Lag., Bull. Soc. Myc. Fr. 19 : 99, non Morgan. 



Sporangia sessile, gregarious or crowded, small, ellipsoid or reniform, 

 arcuate, dark red-brown, sessile; hypothallus none; capillitial mass 

 ochraceous or dull yellow, the elaters few, irregular, the spirals uneven, 

 irregular, often projecting and thin, though generally fiat or obscure, 

 the apices more or less swollen, ending in a curved tip; spore-mass 

 concolorous; spores beneath the lens bright yellow, papillose, 10-13 /jl. 



This species resembles T. inconspicua in color, but is of less aggregate 

 habit, and the sporangia are more plasmodiocarpous, reniform, arcuate, 

 etc. The capillitium is also distinctive, the sculpture irregular, uneven, 

 with general lack of symmetry. Our description is made up from 

 specimens of T. reniformis Peck, which appears to be the American 

 form of Rostafinski's species. 



