[ILLUSTRATIONS 



1. Cystidia — pleurocystidia and cheilocystidia, page 18 



2. Cystidia — pleurocystidia and cheilocystidia, page 19 



3. Gill trama — di\ ergenl t\ pe, page 21 



4. Gill trama — interwoven type, page 23 



5. Gill trama — parallel type, page 23 



6. Gill trama — parallel type, page 24 



7. Hygrophorus cuticle types, page -•"> 



8. Hygrophorus cuticle types, page 26 



9. Hygrophorus cuticle types, page 28 



10. Hygrophorus cuticle types, page 30 



11. H. niveus, page 7>2 



12. H. borealis f. boreal is, page 55 



13. H. oirgineus, page 59 



14. H. angustifolius, page 60 



15. H. subviolaceus, page 63 



16. H. colemannianus, page 67 



17. H. graveolens, page 72 



18. 11. pratensis var. pratensis, page 7 1 



19. H. pratensis var. pratensis, page 75 



20. H. pratensis var. robustus, page 77 



21. H. reciirvatus, page 80 



22. H. paupertinus, page 85 



23. H. basidiosus, page 87 



24. H. subfuscescens var. subfuscescens, page 99 



25. H. hymenocephalus, page 104 



26. H. rugulosoidcs, page 107 



27. H. conicus, page 111 



28. H. conicus, page 112 



29. H. calyptraeformis, page 116 



30. H. marginatus var. concolor, page I /s 



31. if. spadiceus \ dr. spadiceus 1. spadiceus, page 122 



32. //. marginatus var. ohvaceus, page 125 



33. H. marginatus var. marginatus, page 127 



34. //. acutoides var. acutoides, page 131 



35. //. cuspidal us, page 1S4 



