INDEX TO CHAPTER IV 



1. Common White Water - crow- 



foot (^Ranunculus aquatilis, 

 var. tnchophyllus), white. 



2. Yellow Water-crowfoot (^a»«»- 



culus multifidus), bright yel- 

 low. 

 Var. Urrestris. 



3. Stiff Water-crowfoot (Ranuncu- 



lus circinatus). 



4. Water-shield {Brasenia peltata), 



purple. 



5. Yellow Nelumbo. Sacred Bean. 



Water - chinquapin (Nelumbo 

 luted), yellow. 



6. Water-nymph. Water-lily (Nym- 



phaea odorata), white or rarely 

 pink. 



7. Yellow Pond-lily (Nuphar ad- 



vend), yellow or with a purple 

 tinge. 



8. Nuphar JCalmianum, yellow. 



g. Umbelled Water-pennywort 

 (Hydrocotyle umbellata), 

 white. 



10. Hydrocotyle vertkillata, 



11. Slum Carsonii, white. 



12. lierula (Berula angustifolia), 



white. 



13. Water - milfoil (Myriophyllum 



verticillatuni), greenish or 

 white. 



14. Myriophyllum scabratum. 



15. Myriophyllum ambiguum. 



16. Water-marigold (Bidens Beckii), 



yellow. 



17. Featherfoil (Hottonia injlatd), 



white. 



18. Floating-heart (Limnanthemum 



lacunosum), white. 



19. Common Bladderwort (Utricu- 



laria vulgaris), bright yel- 

 low. 



20. Utricularia subulata, yellow. 



21. Utricularia resupinata, purple. 



22. Utricularia injlata, yellow. 



23. Utricularia comuta, yellow. 



24. Water - weed (Elodea Canaden- 



sis), greenish. Tape or eel- 

 grass ( Valisneria spiralis). 



25. Pickerel - weed (Pondeteria cor- 



data), blue. 



26. Mud - plantain (Heteranthera re- 



ni/onnis), white or pale blue. 



27. Water Star-grass (H. graminea), 



light yellow. 



28. '&\i.x-x&&dL(Sparganium simplex), 



white. 



29. Broad-fruited Bur-reed (Sparga- 



nium eurycarpum). 

 Small Bur-reed (5. minimum). 



30. Green Arrow - arum (Peltandra 



Virginica), green. 



31. Wild Calla. Water-arum (Calla 



palustris), white. 



32. Golden-club {Orontium aquaii- 



cum), yellow. 



33. Seven-angled Pipewort(£noi:a«- 



lon septangulare), white. 



34. Greater Duckweed {Spirodela 



polyrrhizd). 



