A Revision of the Trichiacem. By G. Masses. 355 



Scattered or aggregated, 3-4 mm. high, stem about 2 mm. high, 

 thin, hollow. CapilHtium elastic, protruding after dehiscence. Allied 

 to Hemiarcyria clavata, but distinct in the dense capillitium without 

 free tips, and the loose spirals, and in the long, thin, black stem, 



* Hemiarcyria clavata, Eost. 



Sporangia simple, stipitate, varying from clavate to subglohose, 

 yellow, 'polished, stem rather thin, yellow, often becoming reddith at 

 the base, mass of capillitium and spores clear yellow, ochraceous- 

 orange, or tinged with olive ; threads of capillitium 4-5 /a thich, 

 forked, free ends not numerous, obtuse or sometimes slightly swollen, 

 spirals thin, not prominent, distant ; spores globose, minutely warted, 

 8-10 fjb diameter, 



Eost., Mon., p. 264, figs. 205, 207, 210, 235 ; Cooke, Myx. Brit., 

 p. 68, figs. 205, 207, 210, 238; Sacc, SylL, vii., 1513. Eaunk., 

 Myx, Dan., p. 64; Schroeter, p. 114. Exsicc. Fckl,, Fung. Ehen. 

 1434 (as Trichia clavata) ! Jack, Leiner u. Sitzenb, Krypt. Badens, 

 621 (as Trichia clavata^ ! Ellis, N. Amer, Fang,, 523 ! 



On decayed wood. Britain (King's Cliffe ! Apethorpe ! Carlisle !) 

 France ! Germany ! Denmark ! United States ! Cuba ! Brazil ! Cey- 

 lon ! Benin Island ! 



A neat species, scattered or gregarious, l'5-2 mm. high; stem 

 slender, often attenuated downwards and longitudinally wrinkled, 

 resembling in form Hemiarcyria leiocarpa, Cke., but known by the 

 warted spores, and absence of spines on the elaters. 



(Rostafinski's Synonyms.) 



Clathrus pedatus, Schm., Ic, t. 33, f. 1, 17 (1776). 

 Sphserocarpus pyriformis. Bull., t. 417, f. 2 (1791). 

 Stemonitis pyriformis, Gmel,, Syst,, 1469 (1791), 

 Trichia pyriformis, Sibth,, Fh Ox,, 406 (1794); Sow., 400, f. 6, 

 Trichia clavata, Pers., Disp., p. 11 (1797) ; Eng. Fl., v. p. 320; 

 Cooke, Hdbk., 1183. 



Trichia citrina, Schum., SaelL, 1460 (1803). 



Arcyria trichioides, Kudolph, Linn., p, 120 (1829). 



Trichia erythropus, Borszczow (1856), 



Trichia oltusa, Wigand, p. 30, 1. 11, f, 4 (1863). 



Trichia Thwaitesii, B. & Br., Ceylon Fungi, No. 776 (1873). 



Hemiarcyria melanopeziza, Berl. 



Sporangia sessile, creeping, subterete, generally forming rings, 

 1-2 mm. long, very black, scarcely or not at all shining, very smooth ; 

 wall black, opaque, subcellulose, rather coriaceous ; splitting longitu- 

 dinally and dehiscing in a valvate manner ; capillitium yellow, pro- 

 truded elastically, threads round, 4-5 /x thick, combined into a loose 

 net, everywhere covered with erect spines, 5-6 X 1 fx, spirals almost 



