134 A Monograph of the Myxogastres. 



(Type in Heik. Berk., Kew, n. 10852.) 

 Ou bark. Ceylon. 



Resembling in many respects Ophiothcca vcDiiicuIaris, but 

 distiuguislied by the very minute, scattered warts on the spores. 



OpMotheca cano-flavescens, Mass. 



Sporangia gregarious, standing on a thin, yellow-grey hypo- 

 thallus, globose to hemispherical, or lengthened to rcniform, 

 sessile, '5 mm. broad, bright yellow-grey, splitting more or less 

 regularly with a lid. The wall contains numei'ous round or 

 angular particles. The upper part of the wall, on its inner 

 side, provided with delicate thickenings combined into a regular 

 network ; meshes of the network 5 — 6-gonal and 12 fx diameter. 

 Civpillitium scarcely evident, only consisting of a few, slightly- 

 branched or quite unbranched threads of variable width, un- 

 cc[ually warted, colourless, yellowish ; without regard to the 

 thickenings the tubes are 1"5 — 2 ju broad. 



Spores golden-yellow, delicately warted, 12'5 — 14 /x diameter. 



Perichacnct cano-Jlavesccns, Raunkier, Myx. Dan., p. 107, t. 2, 

 fig. 10. 



On bark of beech. Denmark (Lolland). 



OpMotheca vermicularis, Mass. (figs. 198, 198 «). 



Sporangia circular, irregularly lobed, or venulose and anasto- 

 mosing to form an irregular network ; when the sporangia are 

 circular or simply lobed there is usually a well-defined, up- 

 raised marginal portion, wall smooth with masses of lime insitle, 

 varying from flesh-colour, through brown to umber; mass of 

 capillitium and spores flesh-colour or bright-yellow ; capillitium 

 well-developed, attached at numerous points to wall of spor- 

 angium, combined to form a loose, irregular net, threads 3— 4 ix 

 diameter, cqv.ally covered vjith mimerous sliort, straight or curved, 

 sometimes branched, raised hands ; sometimes a few rounded warts 

 are intermixed, these latter now and again run out with 

 prominent spines; spores globose, densely and thichly covered 

 njiih small, dejrrcssed vxtrts, 10 — 13 /x diameter. 



