MYXOA1YCETES. GO 



Trichia serpula, Pers. Disp. 10 (1797) ; Eng. Fl. v., 320 ; Cooke 

 Hdbk., 1189. 



Trichia serpula, /3 spongioides, Pers. Syn., 181 (1801). 

 Trichia venosa, Sebum. Saell., 1456 (1808). 

 Hyporhamma reticulatum, Corda Ic., v., 34 (1842). 

 Trichia retiformis, Payer. Crypt., f. 574 (1850). 



Family 17. ARCYRIACE.E. 



Sporangia or a^thalia without lime ; capillitium of tubes more 

 r;irely simple, usually branched, combined into a net, their walls 

 provided with warted, ring-like, or borderlike thickenings ; walls of 

 the sporangium, mass of capillitium and spores, usually uniformly 

 coloured in the same sporangium ; the colouring of the very same 

 species changing within very wide limits, usually red, more rarely 

 yellow or whitish ; wall of sporangia usually simple, often pro- 

 vided witb thickenings in the inner side, or more rarely in certain 

 places bifurcated, the bifurcations consisting of coloured cells ; 

 ajtbalium with nearly naked sporangia, covered with a two-layered 

 tegument, containing numerous coloured cells of variable dimen- 

 sions. Rtfki. Man., 267. 



Genus 37. ARCYRIA. Hill. 



Sporangia of a regular shape, stipitate, dehiscing by a circular 

 fissure, the upper portion evanescent, the lower part springing from 

 an immediate prolongation of the stem in the form of a drinking- 

 glass ; capillitium of numerous arms either grown to the receptacle 

 or fixed in the midst of the closed tubes of the stem. Rtfki. Mon., 

 270. 



83. Arcyria punicea. Pers. 



Sporangia more or less ovate, of a beautiful lustre, usually with 

 an elongated erect stem ; colour of the walls of the sporangia, 

 tubes, stem, mass of capillitium and spores when mature, variable, 

 mostly of a clear red or carmine-brown, more rarely nut-brown, 

 now and then dirty-ochre, bright pale flesh-colour, or rusty -brown; 

 tubes of the net of the capillitium very much flattened, '0033 mm. 

 diam. ; thickenings in the form of half rings or rings, or spines 

 witb half rings standing in rank, '00083 mm. high, encircling the 

 thread in a spiral with a very diffuse twist ; spores smooth, '0067- 

 0075 mm. diam. Rtjki. Hon., 268. 



On rotten stumps. (Fig. 190, 192, 197.) 



Clathroides purpureum, Mich., t. 94, f . 1 c (1729); Hall., pi. i., 

 f. 6 (1742). 



Clathrus.pediculatus, Guett. Obs., 1, 16 (1747). 



drcyiia pedicula, Hill, p. 47 (1751). 



Clathrus (lenndatns, Linn., sp. pi. 1179 (1753). 



