Physarum. 273 



brownish towards the base, as is also the very short, equal stem ; 

 nodes rather scanty, large, irregularly angular, connected at various 

 points ~by rather long, thin internodes ; spores globose, dirty lilac, 

 7 8 /u, diameter, smooth. 



Craterium minimum, B. and C., Grevillea, vol. ii., p. 67 ; 

 Host., Mon., p. 125 ; Sacc., Syll., vii., 1, n. 1240. 



(Type in Herb. Berk., Kew, n. 10,827.) 



On herbaceous stems, &c. Lower Carolina. 



Usually growing in lines on slender, dead herbaceous stems, 

 5 up to nearly 1 mm. high ; the long, thin internodes of the 

 capillitium are unusual in the genus. 



Craterium minutum, Kickx. 



Sporangium stipitate, campanulate, rounded and umbilicate 

 below, 1 1'5 mm. long, of a yellowish clay-colour, tinged 

 brownish or reddish towards the base, 'sprinkled with very 

 minute, wart-like, paler spots. Operculum the same colour as 

 the upper part of the sporangium. Filaments whitish. Spores 

 globose, black. Stem 2, rarely 3 mm. high, attenuated towards 

 the apex, wrinkled, often compressed, russet-brown or reddish", 

 springing from a blackish- brown indistinct hypothallus. 



Craterium minutum, Kickx, Flor. Flanders, ii., p. 23. 



On rotten wood. 



The present species is considered as a species of Tilmadoche 

 by Rostafinski, but as his description differs very materially 

 from that of Kickx, the latter is given above. There is 

 no reason, judging from the description alone, to show why 

 Kickx was not quite correct in considering his specimen as a 

 Craterium. 



PHYSARUM, Pers. 



Sporangia solitary, plasmodiocarp, or combined to form an 

 aethalium, wall single or of two distinct layers; threads of 

 capillitium springing from all parts of the sporangial wall, 

 combined to form an irregular network, with the numerous 

 nodes or angles very much and irregularly swollen and filled 



