MYCETOZOA OF CEYLON. 335 



and twisted, brownish at the base, grayish-brown above, and, 

 in glycerine jelly, brownish yellow at the base, enclosing a 

 little refuse matter, clear yellow or straw-coloured above ; 

 sporangia white, with dense white lime deposits, either 

 spherical, 0"4 mm. diameter, or elongated bolster-shaped, 

 0-6 X 0*2 mm., often lobed ; capilUtium with large white hme 

 knots ; spores dark purple brown, strongly echinulate, with 

 some of the spines in clusters, 14 to 17 /* diameter. Another 

 gathering consists of globose or elongated plasmodiocarps, 

 white, yellowish towards the base ; spores 14 to 17 ^, densely 

 spinulose. In another extensive development the stalks 

 were yellow-brown, red- brown, or blackish-brown below, 

 gray or yellow-brown above; total height up to 2-5 mm. ; 

 sporangia lobed and convoluted, 0-75 to 1-5 mm. across, or 

 fused into white contorted masses, up to 5 mm. broad, on 

 distinct or confluent stalks, sometimes almost sessile ; the 

 clusters of stalks supporting the confluent sporangia spring 

 from a blackish hypothallus which is sometimes not developed 

 where the sporangia are isolated ; stalks furrowed and twisted ; 

 base of the stalk opaque, upper part translucent ; sporangium 

 wall membranous, with dense white hme deposits, colourless, 

 except at the base, which is yellowish ; lime knots white, 

 large, angular, connected by short hyahne threads ; spores 

 dark purple-brown, spinulose, 10 to 12 A« diameter. Another 

 gathering agrees exactly with the last, except that the stalks 

 are darker, and appear red-brown in glycerine jelly, and some 

 of the hme knots are tinged yellow. Another variation occurs 

 in a small gathering of about a dozen sporangia, in which the 

 capiUitium consists of narrow rigid threads ; spores, 13 /^ 

 diameter. 

 Peradeniya. 



Physarum didermoides, Rost. 



" Didymium cinereum, Fr.," in B. & Br. Fungi of Ceylon, 

 No. 756. 



Thwaites' No. 135, B. & Br. 756, in Herb. Peradeniya, 

 contains crowded sessile sporangia of P. didermoides, in 

 addition to Physarum nicaraguense. A typical gathering 

 from Ukuwela consists of crowded, sessile, grayish- white, sub- 

 globose or elongated sporangia on a scanty white membranous 



