200 



The North American Cup-Fungi 



This is a large and difficult genus, new species having been 

 described on the flimsiest pretext and often based on a single 

 specimen in many cases none too good. It is hoped that the 

 following enumeration ma>- be of some assistance to the collector. 



Occurring on phanerogams. 



On dicotyledonous plant tissues. 

 On rotten wood. 



Spores 2-5 /x thick. 



Spores not e.vceeding 10 tx long. 

 Hymeniuni cinereous or lixid. 

 Spores 6-10 M long. 

 Spores 3.5-4.5 y. long. 

 Hymenium whitish. 

 Hymenium pale-brown. 

 Spores 10 /.( or more long. 

 Hymenium orange-yellow. 

 Hymenium bluish-gray. 

 Hymenium horn-colored. 

 Hymenium sooty-black. 

 Hymenium whitish. 

 Spores slender, 1.5-2 ^ thick. 

 H\menium whitish. 

 Spores 6-9 m long. 

 Spores 4-6 jj. long. 

 Hymenium leather-colored. 

 Hymeniuni lilac-colored. 

 On dead herbaceous stems. 

 Spores 16-18 yu long. 

 Spores not e.xceeding 10 ^ long. 

 On dead stems of Polygonum. 

 On dead stems of Asclepias. 

 On dead stems of Thalictriim. 

 On compositae. 



Spores scarceh- 5 /x long. 

 Spores \0 n long. 

 On stems of various kinds. 

 On living or recently killed leaves. 

 On living Potentilla. 

 On leaves of Amophila. 

 On leaves of Angelica. 

 On leaves of Antennaria. 

 On leaves of Gaultheria. 

 On petioles of Juglans. 

 On a variety of herbaceous plants. 

 On monocotyledonous plant tissues. 

 Spores 25-30 n long. 

 On Andropogon. 

 On Scirpus. 



1. M. cinerea. 



2. M. Fairmani. 



3. M. melaleuca. 



4. M. microcarpa. 



5. M. aureofulva. 



6. M. caesia. 



7. M. stibcornen. 



8. M. fumigata. 



9. M. glenospora. 



10. M. vulgaris. 



11. M. caespiticia. 



12. M. ettcoelioides. 



13. M. lilacina. 



14. M. apiophila. 



15. M. Polygon!. 



16. M. Asclepiadis. 



17. M. suhcinerea. 



18. M. exigiia. 



19. M. erigeronata. 



20. M. atrata. 



21. M. Dehnii. 



22. M. clavigera. 



23. M. Angelicae. 



24. M. lanaria. 



25. M. Gaultheriae. 



26. M. abdita. 



27. M. Oenotherae. 



28. M. atriella. 



29. M. scirpina. 



