390 MYXOGASTKES. 



1I3S. Physarum bulbiforme. ScTium. " Bulb-like Physarum." 



Peridium hemispherical, iimbilicate beneath, erect, purple- 

 black ; stem attenuated, snlcate, "whitish ; flocci and spores 

 brownish-black. — Fr. S.M.'iA.j). 131. Eng. Fl.Y.p. 315. Fl. Dan. 

 1. 1974,/. 3. 



On rotten wood. 



1137. Physarum rubiginosum. Oiev. "Rusty Physarum." 



Peridium globoso -turbinate, rust-red, as well as the slender 

 even stem ; flocci reticulated, white ; spores black. — Fr. S.M. 

 m.p. 137. Cliev.j-). 338. Eng. Fl.Y.p. 315. 



On trunks amongst moss. Appin. 



The stem penetrates the peridium, but from the close adherence of the 

 coat, not in such a manner as to form an evident umbilicus, nor distinct 

 columella, and it is not paler than the peridium, nor is the hypothallus 

 paler. The upper portion of the peridium is nearly white, as if bleached. — 

 Eng. Fl. 



1138. Physarum lilacinum. Fr. " Lilac Physarum." 



Crowded ; peridia sessile, obovate, even, lilac, or flesh coloured ; 

 flocci few, white ; spores black. — Fr.S.M. \\i.p. 141. B. ^.Br. 

 Ann.N.H.no. 215. 



On decayed wood. Xoy. King's Cliffe. 



The only English specimen was found on the smooth bark of a fallen oak 

 twig. 



1139. Physarum. metallicum.. Berk. " Metallic Physarum." 



Peridium subglobose, slightly depressed, a line or more in 

 breadth, sessile (not adnate), quite smooth, very delicate, of a 

 most beautiful metallic appearance, bursting irregularly. Flocci 

 and spores pink-grey. — Mag. Zool. ^' Bot. no. 29,^. 3,/. 8. 



On a decorticated stick. Xov. Clifton, Notts. 



This most beautiful plant conueci?, Lyrogala'wiila. Physarum, inconsequence 

 of its bright-coloured sporidia. The peridium is, however, perfectly gimple. 

 —J/. /. B. 



1140. Physarum album. Fr. ""White Physarum." 



Peridia very delicate, subrotund, depressed, even, whitish ; 

 flocci few, delicate, loose, black, as well as the spores. — Fr. 

 S.M. Hi. ?). 147. Kl. exs.no.^bQ. Eng. Fl. \. p. 316. Lycogala 

 minuta. Grev. t. 40. FcJd. exs. no. 1459. 



On various substances. Common. [Low. Carolina.] 



Sporidia, globose, or sub-elliptic. 



1141. Physarum atrum. Fr. *' Black Physarum." 

 Aggregated, crowded, confluent, black, peridia very delicate, 



