106 Twenty-fourth Report on the State Museum, 



6. Mouth of the numerous equal j)eridia distinctly 

 lobed 



6. Mouth of the few unequal peridia not distinctly 



lobed 



3. Leaf plainly discolored 



7. Leaf yellowish, not thickened ; peridia large . . . 



7. Leaf brownish, generally thickened ; peridia not 



large 



1. Peridia elongated, nestling in the tomen- 

 tum of the leaf 



8. Peridia few, crowded or scattered 



8. Peridia numerous, not crowded 



Epilobii 

 Euphorbia - 



HYPEKICIFOLIiE 



7 

 Claytoniatum 



houstoniatum 



8 



Gnaphaliatum 



Allenh 



11. 

 11. 



12. 



12. 



15. 



15. 



15. 



h. Peridia in definite spots or clusters. 



9. Elongated 



10. Seated on a thickened subiculum 



Spots brow^n or chestnut-colored 



Spots red 



10. Subiculum not thickened 



Peridia extending to the margin of the spot . . 

 13. Many, in dense roundish clusters 



13. Few, loosely placed on orbicular spots . . . 

 Peridia central on a yellow spot with sterile 



margin 



9. Short or sub-immersed 



14. On a thickened subiculum 



Spots distinct, yellow 



16. Small on the leaves, larger and most often 



on the petioles, which are thickened 

 and distorted 



16. Most often on the leaves, and as large as 



on the slightly thickened petioles 



Spots more or less red or purple, not clear 

 yellow 



17. Pale red, stems or petioles sometimes 



thickened 



17. Chestnut-colored or reddish-brown 



18. Peridia extending to the margin 



18. Peridia central 



17. Yellowish stained with red or purple 



Spots obliterated , 



19. Petioles often attacked and much distorted, 

 19. Petioles not distorted 



20. Peridia wide-mouthed, crowded Eanunculaceabtjm 



20. Peridia narrow-mouthed, spores ellipti- 



cal MENTHA. 



14. Subiculum not thickened 21 



21. Spots yellow, with no tinge of red or 



purple 22 



10 

 11 



Fkaxini 



Berbekidis 



12 



13 



Thalictri 



macrosporum 



hydnoideum 



14 

 15 



16 



Sambuci 



YlOL^ 



Clematitis 



18 



Myricatum 



LiMONII 

 PTJSTTJLATTJM 



19 



Urtic^ 



20 



