White : The Nidulariaceae of North America 279 



Rxplanation of nates 



The figures on Plates 14, 15, 16 and 17 were drawn one quarter larger than 

 indicated. Those on Plate 18 were made twice the size. The microscopic details were 

 drawn with a camera lucida and reduced on the same scale, as above noted. 



Pl.\te 14 

 Fig. I. Cyathia Poeppigii, nat. size. 2. The same, enlarged about three times 

 after moistening. 3. Single peridium in dry condition. 4. Spores, X 335- 5- Cyathia 

 Berkleyma, nat. size. 6. Peridium of same, enlarged three times. 7. Spores, X 335- 

 8. Cyathia intermedia, nat. size. 9. Peridia, enlarged twice, one in dry condition, 

 the other after expanding when moistened. 10. Spores, X 335- ^^- Cyathia hirsuta 

 nat. size. 12. Group, enlarged about three times. 13, Spores, X 335- ^4) ^5- 

 Cyathia hirsuta inftindibuliformis, enlarged about three times. 16. Cyathia dura, 

 nat. size. 17, 18. Peridia, enlarged twice. 19. Spores, X 335- 20. Cyathia Mon- 

 tagnei, nat. size. 21. Peridium, enlarged twice. 22. Spores, X 335- 



Plate 15 

 Fig. I. Cyathia tnelanospernta, nat. size. 2. Single peridium, nat. size (after 

 moistening). 3. Single peridium, enlarged about three times. 4. Spores, X 335- 5- 

 Cyathia pallida, nat. size. 6. Mature and young peridia, enlarged twice. 7. 

 Spores, X 335- 8. Cyathia lentifera, nat. size. 9, 10, 11, 12. Different specimens 

 showing character of growth and shape, enlarged twice. 13. Spores, X 335- '4 

 Cyathia rujipes, nat. size. 15. Peridia, enlarged twice. 16. Spores, X 335- 

 17- Cyathia stercorea, nat. size. 18, 19. Different specimens showing character of 

 growth and shape, enlarged about three times. 20. Spores, X 335- 



Plate 16 



Figs, i, 2. Cyathia stercorea, showing additional types and characteristics, en- 

 larged twice. 3. Cyathia rugispcrma, natural size. 4. Peridia enlarged twice. 5. 

 Spores, X 335- 6. Spores, X 5^5 ■ 7- Cyathia Wrightii, natural size. 8,9. Peridia, 

 enlarged twice. 10. Crucibulum crucibuli/orme,x\2ii\xra\s\zt. 1 1. Section of sporangiole, 

 X 50- 12. Group of peridia, enlarged twice. 13. Spores, X 335- I4- Group of 

 peridia from the Schweinitz specimens of Crucibidiun juglandicolum. 15. Spores 

 from the same, X 335- ^6. Cyathia (?) sp., natural size. 17. N^idula Candida, 

 natural size. 18, 19. Peridia, somewhat enlarged. 20. Spores and filament, X33S- 

 21, 22. Spores of Cyathia (?) sp., X 335- 



Plate 17 



Fig. I. Nidida microcarpa, nat. size. 2. Peridia, enlarged twice. 3. Section- 

 enlarged about five times. 4. Sporangiole showing torn outer covering, enlarged about 

 twenty-five times. 5. Sporangiole still in its enter covering, enlarged twelve times. 6. 

 Spores, X 335- 7- Nidula microcarpa rugispora,w2i\.i\zt.. 8. Peridium, enlarged three 

 times. 9. Spores, X 335- ^O- Gramdaria piilvinata, nat. size, reduced from draw, 

 ing by Mr. Hasselbring of iVidularia A laba mensis Ai'k.. 11. Gramdaria pidvinata, 

 nat. size. 12. Peridia, enlarged three times. 13. Spores and filaments, X 335- '^^• 

 Very old peridia, the walls of which have almost completely fallen away. 15. Spores. 

 X 585. 16. Spores, X 335- ^7- Gramd iria castanea,n2ii.sizQ. 18. Group of peri- 

 dia, enlarged twice. 19. Irregular peridia, having grown together, enlarged twice, 

 20. Spores of Gramdaria pulvinata, yC, t^t,^ [Nidtdaria Alahaniensis Atk. ). 21. 

 . (7/'a««/«r?rt rwaVj, enlarged twice. 22. Spores, X 335- 23. Sporangioles, X ^S- 



