86' 



riTTONIA. 



1. 



Explanation of Plate I, 



Enj)horhia scrpijlllfi 



2, Involucre and stipule of the same. 



3. Under surface of appendage and lobe of involucre. 

 A. Leaf (average form in tLe type). 



Various Specimens of the Species. 



5. Seed of M. E. Jones' specimen (3998), Flagstaff, Arizona 



6. Leaf, stipule, and involucre of same. 



7. LoAver stipule of same. 



8. From E. L. Greene's specimen from Santa Rosa, Calif. 



9. From M. E. Jones' prostrate, maculate specimen, Flag- 



staff, xlrizona. 

 10. From E. Hall's Oreirou snopimpn 



Various SpECiiiENS of var. consangiiinea. 



11. Seed from E. L. Greene's Lake Pend d'Oreille, Idaho, 



specimen. 



12. Leaf, stipule, and involucre of same. 



13. From Suksdorf's Washington specimen. 



14. From the Orcutt herb, specimen from Lower California. 



15. From the Napa Soda Springs specimen described by 



Prof. Greene as E. sangnivca, H. & S., in Bull. Calif. 

 Acad. Sci., Vol. 2. p. 55. 



E. Serpyllifoli.\, var. Nco-Mcxicana. 



16. Seed from the type specimen of E. Neo-Mcxkamh 



Greene. 



17. Leaf and stipule of same. 



18. Glands, appendages, and involueral lobe of same. 



E. Serpyllifolia, var. rucjulosa. 



19. Leaf, stipule, and involucre from the type. 



(All enlarged.) 



