22 THE MYXOMYCETES 



yEthalia pulvinate or somewhat globoid, irregular, small, usually 

 1 cm. or less in width; cortex very thin, gray or greenish yellow, bear- 

 ing scattered deposits of yellow lime nodules; internal walls frequently 

 not evident; capillitium well developed, the numerous fusiform or 

 branching calcareous nodes yellow, ochraceous or sometimes nearly 

 white, connected by rather short hyaline threads; spores violet-brown, 

 coarsely, somewhat irregularly and not very closely warted, 11-13 /*. 

 Plasmodium yellow. 



The above description is based mainly on material from northern 

 New York said by Rex to agree with specimens of Fuligo ochracea 

 Peck in the New York State Museum. The distinctive characters, 

 aside from the small size, seem to be the dull greenish or gray peridium, 

 with its scattered deposits of yellow lime and the strongly but sparsely 

 warted spores. 



New York, New England, Ontario; Europe, Ceylon. Reported 

 from Manchuria by Skvortzow, 1931, but the description given makes 

 the report doubtful. 



3. Fuligo septica (L.) Weber 



Wigg. Pr. Fl. Holsat. 112. 1780. 

 PI. I, Figs. 6, 7, 8. 



1763. Mucor septicus Linn., Sp. Plant, ed. 2. No. 1656. 



1763. Mucor ovatus Schaeff., Fungi Bav. 132, fig. 192. 



1772. Mucor mucilago Scop., Fl. Cam. 2 : 492. 



1791. Reticularia carnosa Bull., Champ. 85, pi. 424, fig. 1. 



1791. Reticularia hortensis Bull., Champ. 86, pi. 424, fig. 2. 



1791. Reticularia lutea Bull., Champ. 87, pi. 380, fig. 1. 



1794. Fuligo flava Pers., Roemer N. Mag. Bot. 1 : 88. 



1796. Fuligo vapor aria Pers., Obs. Myc. 1 : 92. 



1799. Fuligo pallida Pers., Obs. Myc. 2 : 36. 



1801. Reticularia ovata (Schaeff.) Wither., Br. PI. ed. 4. 4 : 463. 



1801. Reticularia septica (L.) Wither., Br. PL ed. 4. 4 : 463. 



1801. Fuligo Iczvis Pers., Syn. Meth. Fung. 160. 



1803. Fuligo flavescens Schum., Enum. PI. Saell. 2 : 194. 



1809. Mthalium flavum (Pers.) Link, Mag. Ges. Nat. Fr. Berl. 3 : 42. 



1825. Fuligo cerebrina Brond., Mem. Soc. Linn. Paris 3 : 74. 



1826. Reticularia vaporaria (Pers.) Chev., Fl. Par. 1 : 342. 



1826. Fuligo varians Somm., Fl. Lapp. 239. 



1827. JEthalium violaceum Spreng., Syst. Veg. 4 : 533. 

 1829. Mhalium septicum (L.) Fr., Syst. Myc. 3 : 93. 

 1885. Fuligo tatrica Racib., Hedwigia 24 : 169. 



mthalium pulvinate, rarely more or less plasmodiocarpous, varying 

 in size but usually large, up to 20 cm. or occasionally more in its largest 

 diameter, and 1-3 cm. thick; color white, yellowish ochraceous, green- 



