A Revision of the Trichiacese. By G. Masses. 857 



much crowded, not prominent; spores globose, minutely warted, 

 8-10 jjL diameter. 



(Type in Herb. Currey, KeAv.) 



On wood. Britain (Weybridge, Surrey !). 



Sporangia wben hemispherical, from • 5-1 mm. diameter, sometimes 

 vermiform. Distinguished amongst the species with warted spores by 

 the densely crowded spirals of the elaters. A note by Currey accom- 

 panying the specimen says, " The spores of this specimen sown in 

 water produced de Bary's zoospores in 24 hours." 



Kemarkable in having the inner surface of the wall of the 

 sporangium covered with large amorphous lumps of lime, differing in 

 this respect from any known member of the Tricheee. 



C. Spores with raised JI at hands combined to form a networh. 

 * Hemiarcyria chrysospora, Lister, fig. 37. 



Sporangia sessile on a broad base, generally closely aggregated, 

 bright ochraceous yellow ; mass of capillitium and spores yellow ; 

 threads 5 /x thick, forming a loose net with many free ends, which 

 generally terminate in slightly expanded, smooth, bent or straight, 

 conical apices, spirals four, rather close, not prominent, connected hy 

 less prominent ridges running parallel to the long axis of the thread; 

 spores globose, with raised flat hands forming a polygonal networh, 

 16 /A diameter. 



' Grevillea,' v. p. 126. 



(Authentic specimen from author in Herb. Kew.) 



On twigs of larch lying on the ground, and on the surrounding 

 herbage. Britain (Lyme Kegis !). 



A fine species with the sporangia 1 mm. diameter, well marked by 

 the reticulated spores, and the parallel bands connecting the spira's on 

 the elaters. From three to five complete polygons on a hemisphere 

 of the spore, 



* Hemiarcyria serpiila, Eost., fig. 34. 



Plasmodiocarp vein-like, creeping, usually anastomosing to for n 

 a net, wall thin, fragile, yellow, sometimes tinged with brown ; mass 

 of capillitium and spores yellow ; threads of capillitir.m 5-6 jx thick, 

 forming a net with numerous free ends terminating in a smooth, 

 tapering spine 8-10 /x long, spirals thin, not prominent, distant, 

 furnished with numerous long, slender spimdes; spores globose 

 with raised flat hands forming an irregular network, 10-12 /x 

 diameter. 



Eost, Mon., p. 267, figs. 200, 227, 228 ; Cooke, Myx. Brit., p. 68 

 figs. 200, 2-27, 228; Schroeter, p. 115; Sacc, SvlL, vii. part i. 

 No. 1514 ; Eaunk., Myx. Dan., p. 64, t. 3, f. 16. 



Exsicc— Fuckel, Fung. Rhen., 2692 ! (as Hemitrichia contorta 

 (Ditm.) Eost.). 



On rotten wood, branches, leaves, Szq. Britain (Carlisle ' specimen 



1889. 2 c 



