152 Natural History Bulletin. 



TILMADOCHE, Fries. 



Sporangia simple, stalked, breaking irregularly, without 

 columella. Peridium very delicate, thin-walled, usually with 

 calcareous granules. Capillitium lace-like, the tubules repeat- 

 edly dichotomously branched from the base, terminating by 

 very delicate points in the peridial membrane; calcareous 

 thickenings not numerous, spindle-shaped, small. 



52. TiLMADOCHE viRiDis, {^Gvidvi) Sacccirdo. Plate VIII, 



Figs. 8, 8cz, 85 and 8^. 



Sporangia globose, flattened or lenticular, beneath plane or 

 concave, variously colored, 3'ellow, greenish -yellow, rusty- 

 orange, stipitate, nodding; the peridium splitting irregularly 

 or reticulately. Stipe variable in length and color, through 

 various shades of red and yellow, subulate. Capillitium 

 strongly developed, concolorous with sporangium, the tubes 

 with colorless, calcareous thickenings. Spores smooth, fus- 

 cous or violet-black, .008. 



A very handsome and rather common little species, gen- 

 erally greenish-yellow in color, but occasionally brilliantly 

 orange without a suggestion of green. The nodding, lenticu- 

 lar, umbilicate sporangium, barely attached to the pointed 

 apex of the stipe is sufficient to distinguish the species. The 

 spores in our specimens seem a trifle larger, measuring .009. 

 August — September. On rotten logs in the woods. 



53. TiLMADOCHE GYROCEPHALA, [JiJIlL) Rostcifiuski. Plate 



VIII, Figs. 2, 2a and 20. 



Sporangia spherical or irregular, impressed, gyrose-conflu- 

 ent, helvelloid, umbilicate below. Peridium thin, ashy, cov- 

 ered with evanescent yellow squamules, fragile. Stipe from 

 an expanded membranaceous base, long- subulate, yellow. 

 Spores smooth, violet, .009-.011. 



A most singular species and well defined is this, occurring 



