136 [Assembly 



CEnothera, L. Evening Primrose . 



pumila, L. CE. chrysantha and pusilla, Michx. Fields and mea- 

 dows . June- July . 

 fruticosa, L. CE. canadensis, Goldie. Dry places. June- Aug. 



Var. ambigua, Nutt . Stony fields . August . 

 biennis, L. CE. grandiflora, Ait. CE. parviflora, L. Fields and 

 meadows . June- August . 



Ludwigia, L. 



palustris, Ell. Stagnant water . July-October . 

 alternifolia, L. Swamps. July- August. 



Circea, Tourn. Enchanter's Nightshade . 

 lutetiana. Var. 1 . canadensis, L . 



Var. 2. alpina. C. alpina, L. 



Damp shady woods . July- August . 



Sub-Order Haloragejs. 



Proserpinaca, L. Mermaid Weed. 



palustris, L. In water . July- August . 



Myriophylltjm, Vaill. Water Milfoil. 



spicatum, L. Deep water . July- August . 

 verticillatum, L. Ponds and streams. July-September, 

 heterophyllum, Michx. Ponds and streams . July-September . 

 ambiguum, Nutt. Ponds and muddy places, Long Island. July- 

 August . 

 tenellum, Bigel. Borders of ponds, northern counties . August . 



Hippuris, L. Mare's-tail. 



vulgaris, L. Ponds and lakes, Schenectady, Dr. Beck . Cayuga 

 lake, Dr. 1. Smith. Ditches near Coldspring, 

 Putnam county, Prof. Bailey. 



Order CALLITRICHACEiE. The Water-Chickweed Tribe. 



Callitriche, L. Water Chickweed . 



verna, L. C. heterophylla, Pursh. In water. May-September. 

 Var.? linearis. C. linearis, Pm~sh. In water. August. 

 Var.? terrestris. C. terrestris, Rqf. Muddy places. July. 



