APPENDIX. 363 



Family V. UREDINEI. Mycelium a filamentous mass 

 growing in the interior of living vegetable structures, 

 finally breaking out on the surface in patches, margined or 

 naked, and bearing simple or compound spores, single or in 

 beaded series. 



The following is Tulasne's synopsis of the family : 



I. Albuginei (white or pale-yellow, heterosporous). 



Gen. I. Cystopus. 



II. JEcidinei (with a peridium, homcesporous). 



2. Cseoma. 



3. ^Ecidium. 



4. Raestelia. 



5. Peridermium. 



III. Melampsorei (solid, pulvinate, biform). 



6. Melampsora. 



7. Coleosporium. 



IY. Phragmidiacei (pulverulent, biform, infuscate). 



8. Phragmidium. 



9. Triphragmidium. 



10. Pucciuia. 



11. Uromyces. 



12. Pileolaria. 



V. Pucdniei (fleshy, ligulate or tremelliform, naked, 

 and uniform in the fruits). 



13. Podisoma. 



14. Gymnosporangium. 



VI. Cronartiei (peridiate, biform, ligulate). 



15. Cronartium. 



Family VI. USTILAGINEI. Similar to the last, but grow 

 in the interior of organs, especially ovaries and anthers, 

 of plants. Spores break up without bursting through to 

 surface, so as to leave a cavity full of dust-like spores. 



I. Ustilaginei Veri. Stroma at first mucilaginous, en- 

 tire, or soon broken up into variously conglomerated 



