278 A Monograph of the Myxogastres. 



Physarum anceps, Fckl, Sym. Myc., 343 (1869). 

 Didymium nectriaformv, B. and C., Grev., 353. 

 Didymium eroceo-flavium, B. and Br., Fung. Ceylon, n. 757. 

 Didymium lateritium, B. and Br., MSS. 



Physarum melleum, Mass. 



Sporangia stipitate, hemispherical, flattened below, wall thin, 

 yellowish-olive or honey-coloured, sprinkled with minute particles 

 of lime ; columella small, white ; capillitium very dense, snow- 

 white, nodes numerous, very large, angularly stellate, separated 

 from each other by constrictions only, lime in the form of granules 

 present in every portion; spores globose, pale lilac, minutely 

 verruculose, 6 7 /* in diameter; stem about equal to the 

 sporangium in length, rather thick, equal, white, longitudinally 

 wrinkled, filled with particles of lime, hypothallus absent. 



Didymium melleum, Berk, and Broome, Ceylon Fung., n. 751, 

 in Journ. Linn. Soc., vol. xiv., p. 83. 



^ (Type in Herb. Berk., Kew, n. 10,810.) 



Physarum Schumachcri, Host., Mon., p. 99 (in part). 



Physarum citrinum, Sacc., Syll., vii., 1, n. 1176 (in part). 



On dead leaves. Ceylon. 



About 2 mm. high. Distinct from P. Schumacheri in the 

 dense Badhamia type of the capillitium, smaller spores, and 

 absence of the hypothallus. 



Physarum citrinellum, Peck. 



Sporangia subglobose or slightly attenuated at the base, sub- 

 stipitate, wall thin, pale yellmo, sometimes with a greenish tinge, 

 rough urith numerous crystals of lime, becoming irregularly 

 ruptured at the apex; the very short stem is rufous, longi- 

 tudinally wrinkled, and expands into a minute hypothallus; 

 columella absent; capillitium rather dense, nodes irregularly 

 stellate-angular, large, containing colourless granules of lime, 

 intcrnodes elongated, very thin, colourless, without lime; spores 

 globose, pale lilac, minutely warted, 7 8 jx diameter. 



Physarum citrinellum, Peck. 



On mosses. United States. 



