trichia] trichiaoeae 209 



3. T. affinis de Bary in Fuckel Symb. Myc, 336 (1869). 

 Plasmodium watery-white. Sporangia globose or obovoid, 

 sessile, visually crowded, often seated on a membranous 

 hypothallus, 0*6 to 1 mm. diam., shining golden or 

 ochraceous-yellow ; mass of elaters and spores bright 

 yellow ; sporangium- wall membranous, pale yellow, marked 

 with delicate irregular striae, rarely reticulated in a 

 manner resembling fan-tracing. Capillitium consisting of 

 long cylindrical elaters, 4 to 6/t diam. with conical pointed 

 ends, marked with four to five spiral bands, smooth, 

 rarely studded with minute scattered spines ; longitudinal 

 striae usually present. Spores reticulated with broad, rarely 

 narrow, pitted bands, forming a more or less complete net 

 with three to five meshes to the hemisphere, 13 to 15 ^ diam. ; 

 border 0-5 to 1 ^ wide. — Rost. Mon., p. 257 ; Mass. Mon., 

 194. Trichia Kalbreyeri Mass. in Journ. R. Micr. Soc, 1889, 

 344 ; Mass. Mon., 191. Trichia intermedia Mass. in Journ. 

 R. Micr. Soc, 1889, 341 ; Mass. Mon., 188. Trichia pulchella 

 Rex in Proc. Acad. Nat. Sci. Phil., 1893, 366 ; Macbr. 

 N. Am. Slime-Moulds, 215. T. persimilis Macbr. I.e., 213, 

 in part. 



PI. 160. — c. sporangia ; d. spores and elaters, one elater showing regular the other 

 irregular spiral^bands ; (England). 



This species is nearly allied to T. persimilis, with which it 

 is united by Prof. Macbride ; in Europe and the British Isles, however, 

 the two centres are usually well distinguished. The type of T. 

 pulchella Rex, from Philadelphia (B.M. slide), differs from the 

 usual developments of T. affinis in the more scattered habit 

 of growth of the sporangia ; the elaters are narrow, being 3"5 to 4"5 /x 

 diam. ; the spores have a border 1 ti wide and are reticulated with 

 narrow, minutely pitted raised bands, presenting from three to four 

 meshes on the hemisphere ; it can hardly be considered as having 

 distinctive specific characters. The type of T. Kalbreyeri Mass., 

 from New Granada (K. 1196), has elaters 5 /x diam., with delicate 

 longitudinal striae, and spores marked with a rather close reticulation 

 of broad, faintly pitted bands ; it does not appear to differ from typical 

 T. affinis. The type of T. intermedia Mass. from Scarborough has 

 elaters 4 to 6 fi diam., and is almost identical with de Bary's 

 type of T. affinis in the Strassborg Herbarium both in capillitium and 

 spores. 



Hob. On dead wood, moss, etc. Common in the British Isles. — 

 Addington, Surrey (B.M. 362) ; Leicestershire (B.M. 363a) ; Wanstead, 

 Essex (B.M. 1454) ; Lyme Regis, Dorset (B.M. 1453) ; Falmouth, 

 Cornwall (B.M. 2857) ; North Wales (B.M. 2858) ; Edinburgh (K. 

 1180); Ireland (B.M. slide); Germany (B.M. 785); Sweden (B.M. 

 2859) ; Switzerland (B.M. 2860) ; Portugal (B.M. 2861) ; Ceylon 

 (B.M. 2862) ; Australia (B.M. slide) ; Philippine Islands (B.M. 2047) ; 

 New Zealand (B.M. 2866) ; Japan (B.M. 2867) ; Washington State 

 (B.M. 2863) ; Iowa (B.M. 834) ; Philadelphia (B.M. slide) ; South 

 Carolina (B.M. 959); Colorado (B.M. 2S64) ; Cuba (K. 1118); New 

 Granada (B.M. slide) ; Brazil (B.M. 2865) ; Chili (Paris Herb.). 



