TRICHIA 287 



entirely from the peridia and forming woolly masses above them, the 

 threads long, even, beautifully sculptured, bearing about four spirals, 

 smooth or with scattered short spines and connected by light longi- 

 tudinal ridges, the apices short-tapering, about equal to the width of 

 the elater, 6-8 n; spores concolorous, by transmitted light paler, but 

 still bright yellow, the episporic net conspicuous, the bands narrow 

 and high, not pitted, in form irregularly globose, 12-14 p. Plasmodium 

 yellow. 



A common and beautiful species recognizable at sight, after the 

 peridia break, by the aggregate capillitium constantly in evidence 

 above the abandoned vasiform peridia. The figures of Bulliard are 

 unsatisfactory, although the description he gives and the name he 

 suggests, still current, may lead us to concede that he had this species 

 before him. The spores are larger than in T. persimilis, and the epi- 

 sporic net different, the "border" wider. The Plasmodium, in the lati- 

 tude of Iowa not uncommon in woods in June, after emerging passes 

 into fruit in the laboratory in about forty-eight hours, and the rupture 

 of the peridia follows. The hypothallus is quite distinct, extra-marginal, 

 and in substance like the peridial wall. 



Not rare. Throughout the northern forests, Maine to Washington 

 and Oregon, south to Alabama, Louisiana, Mexico, Chile; Europe, 

 North Africa, Asia. 



11. Trichia pulchella Rex 



Proc. Acad. Nat. Sc. Phila. 1893 : 366. 

 PL XIX, Figs. 507, 508, 509. 



Sporangia solitary or in groups of four or five, bright vitelline yel- 

 low, sessile; peridium thin, transparent, opening irregularly above; 

 hypothallus none; capillitium bright yellow, not emergent, the threads 

 narrow, 3-4 /x, wound with three or four spirals, more or less irregular, 

 smooth, longitudinal ridges wanting, the apices usually rather long, 

 acuminate, about twice the diameter of the elater, sometimes clavate 

 or even globose, bulbose at the tip and furnished with several stout 

 spines; spore-mass concolorous; spores colorless under the lens, marked 

 by an imperfect pitted reticulation of the T. persimilis type, the bands 

 high but narrow, the meshes few and often imperfect, globose or sub- 

 globose, "about 12 /*." If the pale but distinct border is taken into 

 account, the spores of typical material sent by Mr. Rex to Dr. Win- 

 gate measure 14-17 /x. 



The episporic characters of this species ally it most nearly with 

 T. persimilis. The reticulations are possibly not more divergent from 

 the typical form of that species than are the same features in some 



