Phi/sarnm. 305 



much lime, rough, dirty ochraceous, breaking away irregularly, 

 inner membranaceous, grey ; columella absent ; mass of spores 

 blackish-violet ; capillitium rather dense, flaccid, threads colour- 

 loss, 25 — 3 /x thick, irregularly anastomosing, nodes distant, 

 irregtUarly globose, filled with colourless grannies of lime; spores 

 globose, dusky violet, coarsely warted, 11 — 13 /x diameter. 



Didcrma congloincratuvi. Fries, Syst. Myc, iii., p. Ill (not 

 Pliysarum conglomcratnm of E.ost., Mon., f 90 ; Cke., Brit. Myx., 

 f. 90; Sacc, Syll., v., 7, n. 1184). 



(Specimen from Fries in Herb. Berk., Kew.) 



On bark. Britain (King's Cliffe) ; Sweden. 



Sporangia about "5 mm. diameter. Capillitium consisting of 

 long, thin, anastomosing internodes, nodes distant, subglobose, 

 without tapering rays, but giving origin at once to the thin, 

 empty, flaccid internodes. 



The above description is compiled from a specimen sent by 

 Fries to Berkeley, and marked in Fries' handwriting, " Diderma, 

 conglomeratum, Fries, Suec, Lindberg." The specimen is now 

 in the Berkeley collection in the Kew Herbarium. From the 

 above it will be seen that Rostafinski's Physarum co7iglomeratnm, 

 which he considers to be the Diderma conglomeratum of Fries, 

 is not that species at all, hence synonyms have not been given. 

 I am not acquainted with a species corresponding to Rostafinski's 

 description. 



Physarum sinuosum, Rost. (figs. 292, 293). 



Plasiaodiocarp kderally compressed, elongated, flexuous, or 

 irregularly anastomosiog, ivhite or yclloivisli, usually dehiscing by 

 a split along the upper, free margin, wall double, the outer 

 mostly converted into lime, brittle, the inner without lime, 

 grey; capillitium dense, knots containing lime large, numerous, 

 connected by short, thin portions ; spores globose, brownish- 

 violet, variously but always very minutely verruculosc, 8 — 9 ja 

 diameter. 



Physarum sinuosum, Rost., Mon., p. 112, f. 91 ; Cooke, Brit. 

 Myx., p. 14, f 91 ; Sacc, Syll., n. 1198 (Excl. Syn. Bidcrma 

 2xdlidtim, B. and C). 



