62 A M(mo(jraj)h of the Myxogastres. 



erect or slightly curved above, becoming thicker downwards and 

 expanding into a small hypothallus ; spores pale yellow brown, 

 globose, smooth^ 7 — 8 \x diameter. 



On wood and twigs. Ceylon. 



(Type in Herb. Berk., Kcw, no 10871.) 



Gregarious, 3 — 3'5 mm. high, superficially resembling Cri- 

 hraria microccnya, but distinguished from this and all other 

 species by the small, funnel-shaped calyculus with the very 

 long, tapering, marginal teeth. The spores sometimes show a 

 tendency to granulation under a high power. 



* * Network not thickened at the angles. 

 Cribraria microscopica, B. and C 



Sporangia broadly obovate or globose, stipitate, calyculus 

 occupying almost the lower half of the sporangium, without 

 rib-like thickenings, permanent ribs of upper portion thin, eqiial, 

 without granules, not ioicrctssated at the angles, eomhined to form 

 large, irregular jJolygons of about equal size; stem about equal 

 in length to siwrangium, erect, brownish umber : spores globose, 

 smooth, 6 — 7 /u, diameter. 



Cribraria microscopiccL, Berk, and Curt., Grev., Vol. ii., p. 67 ; 

 Sacc, Syll., 1406. 



(Type in Herb. Berk., n. 10175.) 



On shingles. South Carolina. 



Scattered, about 1 mm. high, stem about equal to sporangium 

 in length, expanding at the base into a minute hypothallus.. 

 Every part dingy ochraceous. Distinct from G. minima in the 

 absence of thickened nodes in the network of the sporangium. 



Cribraria tatrica, Racib. 

 Sporangia globo.se, rufous-brown, stipitate, stem obscure 

 rufous, straight; lower part of sporangium persistent, forming 

 a calyculus with the margin irregularly crcnato-dentate ; per- 

 sistent thickenings of upper portion of sporangium cdtout equal, 

 not thickoicd at the nodes ; spores yellow, globose, smooth, 6 — 7 {J- 

 diameter. 



