314 FUNGI. [Physarum, 



** Sessile. 



8. D. lohdtam, Nees, {lobed Didymiuni) ; nearly sessile, 

 peridia subrotund or variable somewhat lobed black, clothed 

 ^vith dirty-white scurf, columella depressed, flocci and sporidia 

 black-brown. Nees, f, 104. Fr. Syst. Myc. v. S. jJ. 123. 



On moss close to the ground. Manchester. Mr. Hobson. 



*** Adnate. 



9. D. physaroides, Pers. (^Physarum-like Didymiuni) ; peridia 

 crowded subrotundo-irregular black clothed with dirty-white 

 meal, columella none, sporidia blackish conglobated. Fr. Syst. 

 lilyc. V. 3. p. 125. — Spumaria physaroides^ Pers. Syn. p. 163. 



On rotten stumps, mosses, &c. Appin. Captain Carmichael. 



10. D. ci7ierewn, Batsch, (cinereous Didymiwii) ; adnate, 

 peridia subg-lobosedirty-whiteclothedwithcfesio-cinereous scurf, 

 Hocci reticulated white, sporidia black. Fr. Syst. Iflyc. v. 3. 

 p. 125. — Lycop. cinereum, Batsch, Cont. \. f. 169. — Physaruni 

 cinereum, Pers. Syn. p. 170. 



On bark and wood. Appin. Captain Carmichael. Dngleshara, 

 Kl. in Hook. Herb. Apethorpe, Norths. Rev. 31. J. Berkeley. — 

 Springing from white, gelatinous serpentine threads. Inner peridimn 

 very delicate, reflecting prismatic colours ; Jfocci flat, white, irregularly 

 reticulated. 



11. Z>. Serpida, Fr. (seiyentlne Didymium) ; flattened, peri- 

 dlum elongated creeping vein-like flexuous and reticulated lead- 

 blue clothed with whitish meal, sporidia compact black. Fr. 

 Syst. Myc. v. 3. p. 126. 



On leaves. Appin. Captain Carmichael. 



87. Physarum. Pers. Physarum. 



Peridium simple, very delicate, membranaceous, bursting 

 irregularly, externally naked. Columella none. — Name, fjffa, 

 a bladder. 



* Stipifate, 



1. P. nutans, Pers. (7iodding Physarum') ; peridium lentiform 

 iimbilicate beneath even at length subsquamulose cernuous, stem 

 subulate at length brownish, flocci very delicate dirty-white^ 

 sporidia dingy-brown black. Pers. Syn. p. 203. Grev. Fl. Ed. 



p. 454 Sphcerocarpiis albus. Bull. t. 4:07. f. S, 470. f. 1. Pttrt, 



V. 3. p. 490. (in part.) — /3. viride ; peridium green. Pers. Syn, 

 p. 172. Ditm. in St. Deutsch. Fl t. 24. Grcv. Fl. Ed. p. 454.— 

 SphcBrocarpus viridis. Bull. t. 407. /. 1. — y. aureum ; peridium 

 golden yellow. Pers. Disp. t. 1./. 6. Ditm. I. c. t, 23. Grev. 

 Sc. Crypt. Fl. t. 124. 



On stumps of trees, &c. a. and y. Common. — iS, Swanston wood, near 

 Edinburgh. Dr. Greville. — This species appears to me more properly a 

 Bidymium, there being certainly a mealy outer coat. The stem, when 



