100 THE NORTH AMERICAN SLIME-MOULDS 



litium persistent, intricate, the nodules white, more or less confluent 

 at the center to form a real or a pseudo-columella ; spores brownish- 

 purple, spinulose, 7-8 /x. 



Reported from Europe, Africa, Ceylon. 



Physarum roseum Berk. £S° Br. 



1873. P/iysarurn roseum Berk. & Br., Jour. Linn. Soc, XIV., p, 84. 



Plasmodium rose-red ; sporangia gregarious, stipitate, globose, rose- 

 red ; the stipe erect, brown, rugulose, translucent ; capillitium lax, 

 delicate, lilac, the nodules few, large, purple- red, branching; spores 

 reddish-lilac or brown, minutely spinulose, 7-10 fx. 



Reported from Ceylon, Java, Borneo, Japan. 



Physarum dictyospermum List. 



1905. Physarum dictyospermum List., Jour. Bot., Vol. XLIII., p. 112. 



"It is distinguished from the other known species of Physarum by 

 the strongly reticulated spores. Its nearest ally is perhaps P. psitta- 

 cinum which it resembles in having orange-red lime-knots and in the 

 sporangium-wall being studded with orange crystalline disks." 

 Lister. 



Reported collected once only; New Zealand. 



Physarum straminipes List. 



1898. Physarum straminipes List., Jour. Bot., Vol. XXXVL, p. 163 



Plasmodium white; sporangia greyish-white, obovoid or wedge- 

 shaped, .7 mm. in diameter, clustered or scattered, stipitate or sessile, 

 when stipitate stalks long, weak; peridium membranous, pale purple; 

 capillitium a persistent rigid net, the nodules white, rounded, some- 

 times aggregate as a pseudo-columella; spores purple-brown, 10-11 fi, 

 warted, the papillae in definite patches. 



Related to P. compressum. 



Reported from England ; Germany. 



Physarum crateriforme Petch. 



Physarum crateriforme Petch, Ann. Perad., IV., p. 304. 



Physarum crateriforme Petch, List., Mycetozoa, 2nd ed., p. 69, PI. 76. 



Sporangia gregarious, globose, clavate or crateriform, sessile or 



