312 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [VOL. 10 



3. Witches' brooms brush-like, usually with juvenile leaves, sori hemispheric, nidus-avis. 

 2. Telia not causing fasciation. 



4. Telia hemispheric. 



5. Telia chiefly epiphyllous. 



6. Teliospores 2-celled, rarely 3- or 1-eelled. shiraianum. 

 6. Teliospores 2-celled. 



7. Teliospores with hyaline papillae. 



8. Teliospores 35-49 fi long, papillae noticeable. torminali-juniperinum. 

 8. Teliospores 40-55 fi long, papillae large. davisii. 

 7. Teliospores without hyaline papillae. nipponicum. 

 5. Telia arising between the scale-like leaves. hemisphericum. 

 4. Telia musciform. multiporum. 

 4. Telia pulvinate. 



9. Telia sometimes causing corniform elongation of leaves. corniforme. 

 9. Telia without deformation of leaves or branches. 



10. Teliospores 2-3 or 4-celled, uredinia with paraphysis-like structures. 



paraphysatum. 



10. Teliospores 2-5-celled, uredinia unknown. libocedri. 

 10. Teliospores 2-celled. 



11. Teliospores pastilliform, squarish or irregular. formosanum. 

 11. Teliospores ellipsoid. 



12. Teliospores with wall thicker above. fraternum. 

 12. Teliospores with wall evenly thick. 



13. Teliospores small (35-45 /* long). asiaticum. 

 13. Teliospores large (55-80 n long). inconspicuum. 

 12. Teliospores with hyaline papillae over pores (sori also caulicolous) . 



cornutum. 



4. Telia tongue-shaped, or conical, teliospores 42-63 n long. exiguum. 

 4. Telia wedge-shaped, teliospores 37-53 long. betheli (or nelsoni). 



4. Telia truncate, teliospores 45-72 jj, long. harknessianum. 

 4. Telia unknown; uredia present, teliospores intermixed, 2-celled. 



14. Teliospores with papillae; urediospores with 6-8 pores. gaeumanni. 

 14. Teliospores without papillae, urediospores with 2 pores. nootkatense. 

 1. Telia caulicolous, on smaller branches, with little hypertrophy. 



15. Teliospores with 1-2 pores in each cell, near the septum. cunninghamianum. 



15. Teliospores with 4-6 pores, in one or two transverse zones. taianum. 

 1. Telia caulicolous, on witches' brooms. 



16. Telia hemispheric, reddish brown. 



17. Teliospore-wall cinnamon-brown, often slightly thicker above. nidus-avis. 



17. Teliospore-wall hyaline to fulvous, uniform. vauqueliniae. 

 16. Telia cylindrical, orange-color. 



18. Teliospores 2-celled. gracile. 

 18. Teliospores 2-5-celled. ellisii. 



1. Telia caulicolous, on galls or gall-like excrescences. 

 19. Galjs rotund, small, telia pulvinate. 



20. Telia following aecia, cinnamon-brown, spores 34-50 /j. long. bermudianum. 



20. Telia without aecia, chestnut-brown, teliospores 48-60 p. long. meridissimum. 

 19. Galls subglobose or reniform (in some species telia may also occur on swellings 



of large branches or trunks). 



21. Telia laterally compressed, scattered. 



22. Telia irregularly tongue-shaped, often crenate. ciipressi. 

 22. Telia wedge-shaped. 



23. Teliospores with papillae over the pores. yamadae. 

 23. Teliospores without papillae. globosum (or betheli). 



21. Telia irregularly compressed, often confluent. nelsoni. 

 21. Telia terete. 



24. Telia somewhat conic, chestnut-brown. 



25. Teliospores with slight hyaline thickenings over the pores. corniculans. 



25. Teliospores with wall uniformly thick. floriforme. 

 24. Telia subcylindric. 



26. Telia cylindric-acuminate, 10-20 mm long, golden-brown. juniperi-virginianae. 

 26. Telia mostly tapering, 6-10 mm long, chestnut-brown. trachysorum. 



