MTXOGASTKES. 389 



1133. Didymium cinexeuxn. Fr. " Cinereous Didymium." 



Adnate, peridia subglobose, whitish ; clothed with ashy-cine- 

 reous scurf, flocci reticulated, white ; spores black. — Fr. S.M.m. 

 ;?. 126. Batsch.f.UQ. Eng. FLy. p. 314:. 



On bark and wood. Appin. [United States.] 



Sprincring from white, gelatinous, serpentine threads. Inner peridium 

 very delicate, reflecting prismatic colours j flocci flat, white, irregularly re- 

 ticulated. — £ng. Fl. 



1134. Didymium serpula. Fr. " Flexuous Didymium." 



Flattened ; peridium elongated, creeping, vein-like, flexuose, 

 and reticulated, lead-coloured ; clothed with whitish scurf ; spores 

 compact, black. — Fr. S.M. iii. p. 126. Encj. Fl. \.p. 314. B. Sf 

 Br. Ann. N.H. no. 1035. FcJd. exs. no. 1463. 



On leaves. Nov. Dec. Appin, Batheaston. 

 Gen. 81. PHYSARUM, P. 



Peridium simple, membranaceous, very 

 delicate, naked, quite smooth, bursting 

 irregularly. Columella none. — Berk. Outl. 

 p. 307. Eng. FL Y.p. 314. 



(Fig. 127.; 



Fig. 127. 



1135. Physarum nutans. P. " Nodding Physarum." 



Peridium lenticular, umbilicate beneath, even, at length sub-squa- 

 mulose, cernuous ; stem subulate, even, brownish, flocci very deli- 

 cate, whitish, spores brownish-black. — Fr. S.M. \\\.p. 128. Eng. 

 Fl.y.p.SU. Fers.Syn. p. 203. Bull. ^. 407,/. 3, ^. 470, /! 1. Fl. 

 Dan.t.20d6,f.l. Bisch.f.3616. Rahh. i\E. no. 4.0. Fckl.exs. 

 no. 1457. 



On decayed wood. [United States.] 



var. p. viride. Peridium green. — Eng. Fl. v. p. 314. 

 Sturm, t. 24. Bull. t. 4.01, f. 1. Nees.f. 108. 



On decayed wood. [United States.] 



var. y. aureum. Peridium golden-yellow. — Pe?'S. Disp. t. 

 1,/. 6. Sturm, t. 23. Grev.t.124.. Fl.Dan.t.209G,f.2. Fckl. 

 exs. no. 1456. 



On decayed wood. [United States.] 



The stem when dry is longitudinally plicate. The flocci appear to be dark 

 unless carefully cleared from the spores. (Fig. 127, nat. size atuL enlarged.) 



