168 ENDOSPORE^E. [TRTCHTA. 



bands and only a few short scattered spines ; it appears to be a typical 

 form of T, scabra, except that the elaters are rather more smooth than 

 usual. 



Hob. On dead wood. Wothorpe, Northamptonshire (B. M. 366) ; 

 St. Catherines, Somerset (B. M. 368) ; Wanstead, Essex (L:B.M.137) ; 

 Lyme Regis, Dorset (L:B.M.137) ; Luton, Beds (L:B.M.137) ; Germany 

 (B. M. 779) ; Sweden (K. 1104) ; Poland (Strassb. Herb.) ; Philadelphia 

 (L:B.M.137); Iowa (B. M. 835) ; Ohio (L:B.M.137). 



6. T. varia Pers., in Romer, N. Mag. Bot., i., p. 90 (1794). 

 Plasmodium white, in rotten wood. Sporangia globose, ovoid or 

 turbinate, sessile or stalked, 0'6 to 0'9 mm. diarn., or forming 

 short plasmodiocarps, crowded or scattered, ochraceous or oliva- 

 ceous ; sporangium-wall membranous, pale yellow, marked with 

 ring-shaped or crescentic thickenings 8 /><, diam. Stalks O'l to 0'5 

 mm. high, 0'2 to 0'3 mm. thick, black, furrowed. Capillitium of 

 cylindrical, ochraceous-yellow elaters, 3 to 5 ^ diam., marked with 

 two prominent bands forming a loose spiral, tapering shortly at 

 the ends and terminating in a curved point. Spores ochraceous- 

 yellow, minutely warted, 11 to 16 JJL diam. Rost., Mon., p. 251 ; 

 Oooke, Myx. Brit., p. 63, figs. 191, 202, 208, 212, 218, 237; 

 Blytt, Bidr. K. Norg., Sop. iii. (1892), p. 12 ; Macbride, in Bull. 

 Nat. Hist. Iowa, ii., p. 129; Mass., Mon., p. 178. Stemonitis 

 varia Pers., in Gmel., Syst. Nat., p. 1470 (1791). Trichia 

 nigripes Pers., Syn., p. 178 (1801). 



Plate LXL, A. a. sporangia, x 20 ; b. elater, x 600; c. spore, x 600 

 (England). 



Sporangia with longer or shorter stalks frequently occur with sessile 

 forms arising from the same plasmodium. 



Hab. On dead wood. Batheaston, Somerset (B. M. 361) ; Leicester- 

 shire (B. M. 379) ; Lyme Regis, Dorset (L:B.M.138) ; Hampstead 

 (B. M. 1122) and Highgate, London (B. M. 1120) ; Brandon, Suffolk 

 (B. M. 1121) ; Bud's Clough, Cheshire (B. M. 1117) ; France (Paris 

 Herb.) ; Germany (B. M. 768) ; Switzerland (B. M. 1141) ; Finland 

 (K. 1124) ; Italy (K. 1148) ; Philadelphia (L:B.M.138) ; Iowa (L:B.M. 

 138) ; S. Carolina (B. M. 800). 



7. T. contorta Rost., Mon., p. 25 (1875). Plasmodium watery- 

 white, in bark and rotten wood. Sporangia subglobose, sessile, 

 crowded or scattered, 0'5 to 0'8 mm. diam., or forming elongated 

 curved plasmodiocarps, dull yellow-brown or dark red-brown ; 

 mass of spores and elaters yellow or ochraceous ; sporangium-wall 

 charged with brown granular matter. Capillitium of irregularly 

 cylindrical threads, with indistinct or rugged spiral thickenings, 

 or of equal elaters with four or five distinct closely set spiral bands, 

 3 to 5 /ji diam., the tips usually swollen and ending in a curved 

 point, yellow or yellow-brown. Spores yellow, minutely spinulose, 

 10 to 14 p. diam. Cooke, Myx. Brit., fig. 229 ; Mass., Mon., p. 

 182. Lycogala contortum Ditm., in Sturm, Deutsch. FL, iii., p. 8, 

 tab. 5 (1813). Hemitrichia contorta Rost., in Fuckel, Syrn. Myc., 

 Nachtr., p. 75. Trichia inconspicua Rost., Mon., p. 259 ; Blytt, 

 Bidr. K Norg., Sop. iii. (1892), p. 13 ; Macbride, in Bull. Nat. 



