280 White : The Nidulariaceae of North America 



Plate i8 

 Figs. 1-6. Cyathia hirsuta. I. Sporangiole, showing attachment, enlarged about 

 fifteen times. 2. Spore, X 39°- 3- Spores and filaments, X 215. 4. Threads of 

 outer coating of sporangiole, X 215. 5. Nodose filaments of the funiculus, X 390. 

 6. Portionof the funiculus, X I lO- 7-^3- Cnuibulum criicibuliforme. 7. Sporangiole, 

 X 15- 8- Sporangiole, with the outer coat peeling off". 9. Small portion of a section 

 of a sporangiole, X 215. 10, 1 1. Spores of young specimen, X 39°- *2. Spores 

 of fully mature specimen, showing contraction of inner substance, X 390- ^3- Small 

 portion of the ends of the filaments of the thin membrane covering the mouth of the 

 immature specimen, X Z^S- 14- Spores of Nidula microcarpa, X 390. 15. Lateral 

 portion of outer coat of the sporangioles of same, X 215. 16. Small portion of the 

 outer coat of the sporangiole of Crucibulum crucibtiliforme, X 215. 1 7. Section of a 

 sporangiole oi Nidula microcarpa, X ^^O- ^8. Fascicular hairs from the outer cover- 

 ing of the peridium of Cyathia intertiiedia, X ^S- ^9- Small portion of the peridial 

 wall of Granidaria pulvinata, X 215. 20. Sporangioles of Granularia castanea, 

 when devoid of peridial covering, X ^ ^^- 



