MYCETOZOA OF CEYLON. 337 



A 



columella to the apex in crateriform examples, but usually 

 terminating at the base of the sporangium in spherical 

 examples. The stalk changes from black to white either below 

 or inside the sporangium. Lime knots forming a massive white 

 columella extending to the apex of the sporangium, giving off 

 horizontal s^ jie-like points 80 to 100 M long and 20 to 40 /^ 

 broad, which end in slender hyahne threads united to the 

 sporangium wall ; in the spherical forms, stalked and sessile, 

 the columella is usually absent and the Ume knots are rod-Mke 

 and forking, springing from the base of the sporangium, often 

 extending to the apex, with few hyaline threads ; sporangium 

 wall membranous, colourless, with innate lime deposits ; stalk 

 containing refuse matter, usually collapsing when mounted ; 

 spores II to 15 /^ diameter, closely spinulose, violet-brown. 



This species occurs in fair abundance on the bark of living 

 jak trees y up to a height of about 5 feet from the ground, 

 at Peradeniya. As a rule, the sporangia are stalked, about 

 liaK of them being crateriform, and the remainder globose. 

 Stalked globose sporangia have also been collected on small 

 fallen twigs of the same tree, but these collection never include 

 more than a dozen sporangia. In two gatherings all the 

 sporangia are spherical and sessile. The capillitium of these 

 sessile forms is in many cases almost that of a Badhamia. 

 When the sporangia are broken, the black stalks, changing 

 to white above and crowned by the white columella, persist 

 for a long time. 



The occurrence of both spherical and clavate sporangia on 

 the living jak trunks, while only spherical sporangia were 

 found on twigs on the ground, gave occasion for suspicion that 

 the clavate or crateriform examples were abnormal because 

 of their position. However, the two most productive trees 

 were felled in July, 1909, and all the examples collected from 

 them during that month while they were lying on the ground 

 were of the clavate form. 

 Physarum bivalve, Pers. 



Angioridium sinuosum, Grev., in B. & Br. No. 758. 



Rather rare. One recent gathering on living stems of 

 Strohilanthes at Hakgala ; white, elongated, winding, com- 

 pressed plasmodiocarps, simple or branched, up to 1 cm. 



