CYPERACEiE. 263 



fruit, but differs far too much. It seems proper to give it due 

 rank among its kindred species. 



8. C. rosea, Schk. Moist fields. 



var. radiata, D. Moist woods or shaded places. 



9. C. retroflexa, Muhl. Open, moist woods. In making these 

 two distinct, the authority is Schk. and Muhlenberg. 



10. C. JWuhlenbergii, Schk. In dry fields and pastures. 



11. C. sparganioides, Muhl. Cultivated fields. 



12. C. multiflora, Muhl. Meadows and moist pastures, 

 var. microsperma, D. Do. do. 



This is C. vulpinoidea, Mx. 



13. C. stipata, Muhl. Wet places : variable. Much resem- 

 bles C. vulpina, L., though much smaller than the European 

 plant. 



14. C. cetacea, D. Wet meadows ; between the last two, 

 and distinct from both. 



15. C. paniculata, L. In pond holes ; little branching. 



16. C. teretiuscula, L. Do. 



17. C. disperma, D. Wet places at the foot of hills. 



Group 4. Spikes several, stamens at the base. 



18. C. Deioeyana, Schw. Open woods. Found throughout 

 the Northern States, into Canada and the Frigid Zone. 



19. C. trispermct) D. Small tufts in wet, shaded places. 



20. C. tellulata, Schreb. Wet fields. 



21. C. scirpoides, Schk. Wet and marshy places. 



22. C. curta, Good. Wet bogs. 



23. C. scoparia, Schk. Dry and moist situations. 



24. C. lagopodioides, Schk. About wet places. 



25. C. straminea, Willd. Fields and pastures, 

 var. minor, D. Do. do. 



26. C. tenera, D. Wet fields. Related to the preceding, 

 but often is quite different. 



27. C. cristata, Schw. Moist fields. 



28. C. mirabilis, D. Hedges and fields, dry. 



29. C. festucacea, Schk. Cultivated grounds. Larger, and 

 club-shaped spikes, and different fruit and seeds from the two pre- 

 ceding, which it resembles. 



