Rev. M. J. Berkeley on British Fungi. 431 



of filaments spotted with fertile patches. The filaments of the 

 interstices are loose and but little complicated, whereas those 

 of the fructifying spots are more closely packed, short and 

 branched, their tips swelling and gradually giving rise to large 

 globose utricles, which contain about four sporidia, and very 

 much resembling those of Anthoceros, as represented by Mohl. 

 Each sporidium has two membranes, and in the centre is a 

 globose nucleus. While in the utricles the sporidia are far 

 less coloured than after their escape. They appear to me to 

 be perfected, when free, by the imbibition of the surrounding 

 nutriment. The same I believe takes place in Bovista and Ly- 

 coperdon, and in many of the dark-coloured Hyphomycetes. 



Plate. XI. fig. 10. a, a filament from fertile patches which produce the 

 utricles ; b, a portion of one of the patches at a later stage of growth with 

 utricles and sporidia; the sporidia in the utricles are still nearly colourless; 

 c, a single sporidium of E. muricatus ; d, ditto of E.granulatus. All highly 

 magnified. 



*212. E. muricatus, Fr. Syst. Myc. vol. iii. p. 59. E. va- 

 riegatus, Vitt. 1. c. p. 68. t. 4. fig. 4. Found with the last. 

 This differs not only in the more muricated surface, but essen- 

 tially in the substance of the coriaceous covering, being va- 

 riegated with brown dots, and in the smaller size of the spo- 

 ridia. 



*213. Physarum hyalinum, Pers., Fr. Syst. Myc. vol. iii. p. 

 139. Lambley, Notts. 



214. P. utricular 'e, Chev., Fr. 1. c. On wood. King's ClifFe. 



215. P. lilacinum, Fr. Syst. Myc. vol. iii. p. 140. The only 

 specimen I have seen of this elegant species was found by my 

 pupil Mr. Charles Wing, on the smooth bark of a fallen oak 

 twig in Westhay Wood, King's Cliffe, Nov. 1838. 



216. P. atrum, Fr. Syst. Myc. vol. iii. p. 147. On fallen 

 oak branches, King's Cliffe. And a much smaller variety on 

 cabbage stalks. 



217. Stemonitis pulchella, Bab., Abst. Linn. Trans; 1839. 

 Minutissima, hypothallo notabili fusco ; peridiis sparsis eva- 

 nidis ; stipite breviusculo, deorsum incrassato, apicem non 

 attingente ; capillitio purpurascente ovato-oblongo vix ventri- 

 coso ; sporidiis purpureo-fuscis. On Pteris aquilina, Barden 

 Hill, Leic. Mr. Churchill Babington, Sept. 1837. 



Extremely minute, not 1 line high, scattered with a trans- 

 parent horn-brown hypothallus ; peridium extremely evanes- 

 cent ; stem vanishing a little below the apex ,giving off fila- 

 ments on every side ; the free part rather short, smooth, dark, 

 slightly incrassated below ; capillitium ovato-oblong, purplish 

 brown ; sporidia purple brown. 



Tab. XII. fig. 11. a, S. pulchella, natsize; b, a single plant, magnified; 



