210 A NEW VARIETY OF ENTERIDIUM OLIVACEUM EHRENB. O'OIB, crass. 0"003 millim., S-septatse, apicibus rotundatis aut obtusis. Ad corticem arboris prope Lomond Bay in St. Vincent (cum n. 152). Praesertim hypothallo magis evoluto a P. leiico- blepharo (Nyl.) Wain, differt, et forsan est ejus varietas. Gonidia globosa, diam. 0-006-0-004 millim., protococcacea (solum simplicia visa). Ad genus Pilocarpon secundum descriptiones etiam species sequentes pertinent : P. rotuliforme (Miill. Arg. Lich. Beitr. n. 290 ; Lich. Epiph. 8), P. polychromum (Miill. Arg. Lich. Epiph. 8), P. aterulum (Miill. Arg. I. c), P. tomentosum. (Miill. Arg. Lich. Beitr. n. 1522). Pilocarpon et Lecanactis (Wain. iStud. Bres. ii. 90), sicut etiam RoccellecB, qu» sporis, paraphysibus et colore excipuli Gra- phideas in memoriam revocant, nota gravissima, apotheciis typice orbicularibus, differunt a Graphideis, qaarum apothecia typice elongata aut angulosa dilformiave sunt (etiam in Platyyr. joericlea typica pr. p. irregularia sunt). Etiam inter fungos cyclocarpeos species Lecanactideis afiSnes cognitas sunt. Ad tales pertinent Pa- tellancB, velut P. pruinosa Karst. Hedwigia, 1889, 193, cet. (To be continued.) A NEW VAEIETY OF ENTERIDIUM OLIVACEUM Ehrenb. By Arthur Lister, F.L.S. In the description of Licea flexuosa Pers. in the British Museum Catalogue of Mycetozoa, p. 150, attention is called to the alliance which appears to exist between that species and Enteridlurn oliva- ceurn, nnd reference is given to a specimen from Glen Tanner, Appin, Argyle, in the Kew collection, which resembles Licea fiexuosa in the plasmodiocarp form of the sporangia, and in the absence of a pseudo- capillitium. In this specimen, however, the spores are in clusters, and exactly correspond with those of Enteridium olivaceum, instead of being free, as in the case of the three known species of the genus Licea. The Appin gathering was placed by Berkeley as Licea flexuosa, and was afterwards examined by Rostafinski, who marked it as Enteridium olivaceum. Since the publication of the Catalogue, the same form has been met with on three occasions, namely, in a fir plantation at Leighton Buzzard, in the New Forest, and in Lord Radnor's woods at Alderbury, Wilts. The purple-brown plasmodiocarps were found on decorticated logs of Scotch fir, long exposed to weather and green with algae. The sporangia were 0-6 mm. broad by 0*3 mm. thick; in some instances their shape was linear, while in others they were extended to form a flat network 9 mm. long by 4 mm. broad. At Alderbury it was found in com- pany with the comparatively simple plasmodiocarps of Licea flexuosa. The only specimens I had previously examined of the latter species were one from Germany, in De Bary's collection at Strassburg, and one from Aboyne, Scotland, in Berkeley's herbarium at Kew, and several gatherings made by myself in Norway. The form under consideration differs hovuLicea flexuosa not oxAy
