10 



MICHIGAN FLOE A. 



Early Mead- 

 ow Rue. 



Purplish M. 

 Rue. 



Tall M. Rue. 



Stiff Water 

 Crowfoot. 



White Water 

 Crowfoot. 



11. dioicum, L 



Early, 



Th. 



Worth cultivating for its delicate, glaucous-green foliage. 



Common. 



12. purpurascens, L. Th. 



The flowers vary from white to deep purple, the fertile ones occasionally 

 bearing stamens as in the next. Wet meadows. Common. 



13. Cornuti, L. Th. 



Often confounded with the preceding. Frequent. 



RANUNCULUS 



14. aquatilis, L., var. stagnatilis, DO. Th. 



Bear River, Petoskey— E. J. Hill; Ann Arbor— Allmendinger Cat.; Huron 

 R.— Lyons; etc. 



15. aquatilis, L., var. trichophyllus, Chaix. 



Yellow Water 

 Crowfoot. 



W. Plantain 

 Spearwort. 



Creeping 

 Spearwort. 



Early Crow- 

 foot. 



Spring Crow- 

 foot. 



Small-flow- 

 ered C. 



Cursed C. 



Hooked C. 

 Bristly C. 

 Early C. 



Creeping C. 

 Butter-cups. 



Isopyrum. 

 False Rue 

 Anomone. 



Marsh Mari- 

 gold. 



Infrequent. 



Th. 



Common. 



16. multifidus, Ph. Th. 



Flowers an inch and three-eighths in diameter and full— double have been 

 seen. Ponds and slow streams. Very common. 



17. multifidus, Ph., var. terrestris, Gr. 



Ann Arbor,— Miss Clark. 



18. ambigens, Watson. 



Dr. Lyons. Not observed in C. &S. 



19. flammula, L., var. reptans, Meyer. Th. 



Infrequent except northward, and not seen in the center of the State. 



20. rhomboideus, Goldie. Th. 



On light sand; our earliest spring flower. Muir and Palo in Ionia county 

 (!); Lake Superior.— Can. Cat. " Prairies, Mich."— Gray. 



abortivus, L. 



21. 



22. 



23. 



24. 



abortivus, L., var. niicranthus, Gr. 

 sceleratus, L. (***) 



Rare. 



Th. 



Common. 



Th. 

 Th. 



Ditches and low ground. Exceedingly variable, stems sometimes two 

 inches in diameter. Frequent. 



Th. 



Common. 



Th. 



Frequent. 



Th. 



Flowers sometimes double, or 

 idy plain 

 Common. 



Th. 



Very common. 



Th. 



recurvatus, Poir. 



Woods in rich soil. 



25. Pennsylvanicus, L. 



26. fascicularis, Muhl. 



Pretty and worth trying in the garden, 

 with reversion of essential organs to leaves. Hills and sandy plains 



27. repens, L. 



Wet places. 



28. acris. L. (***) 



Classed by Hooker f. as indigenous,"— Watson. So. Haven; Macomb 

 Co.; Flint; Huron shore— Winch. Cat.; and Lake Superior. 



Infrequent. 



ISOPYKUM 



29. biternatum, T. & Gr. (***) 



0. &S. 



Early and pretty. Often mistaken for Rue Anemone, from which the 

 latter is easily distinguished by its dahlia-like roots. Very common on 

 " beech and maple " land, but not on oak. 



CALTHA 



30. palustris, L. 



In swamps, 

 greens. 



Th. 



Frequently called "Cowslip," and eaten in spring for 



Very common. 



