MYCBTOZOA OF CEYLON. 343 



are pulvinate, white, usually small, up to 1 centimetre in 

 diameter, sometimes irregular, elongated, and flattened, and 

 confluent in masses up to 5 cm. long and 1- 5 to 2 .cm. broad ; 

 lime knots large, white ; spores ellipsoid, or irregularly oval, 

 11 to 14by7tolO^,or sometimes almost spherical, 10 to 12 /^ 

 diameter. 



Craterium pedunculatum, Trent. 



Rather rare. The Hd in the recent Ceylon forms is sunk 

 below the rim of the cup, and leaves a distinct inner ridge on 

 dehiscence. A ripening plasmodium, found in the jungle at 

 Pattipola, had crept up the green stems of Strohilanthes to a 

 height of one or two feet. 



Peradeniya, Gangaruwa, Pattipola. 



Craterium leucocephalum, Ditm. 



Common at Peradeniya on dead leaves. The sporangia are 

 sometimes almost completely white, except at the base. The 

 stalks are often very short, about 0*1 to 0" 2 mm. high. The 

 crystaUine yellow discs are apparently absent from the sporan- 

 gium wall of aU the Ceylon forms. 



Craterium mutabile, Fr. 



Foimdon one occasion in the jungle at Hakgala (5,600 feet) 

 on dead leaves. Stalks fuiTowed, translucent, red-brown, 

 0-5 mm. high, 0* 1 mm. diameter ; head 0-4 mm. high, ovoid 

 or globose, rugose, pale yellow or orange above, orange at the 

 base, splitting irregularly at the top, sometimes leaving a cui) 

 with a regular edge ; lime granules of the sporangium wall 

 spherical; Ume knots yellow, angular, up to 70 X 40 /^, 

 connected by hyaline, rather rigid threads with triangular 

 expansions at the axils ; granules of the hme knots spherical 

 (only visible at the corners) ; spores violet-brown, minutely 

 warted, 8 to 9 /* diameter. 



Chondrioderma spumarioides, Rost. 



Plasmodimn pale yellow, among dead leaves, becoming 

 white ; developing sporangia pale yellow. The Cej^on form 

 is fairly typical, but the mature sporangia always liave the 

 outer wall cracked into concave, polygonal areolae, whose 

 edges form elevated ridges. This was at first considered to be 



