136 
[Assembly 
CEnothera, L. Evening Primrose . 
pumila, L. (E. chrysantha and pusilla, Michx. Fields and mea- 
dows . June-July . 
fruticosa, X. CE. canadensis, Goldie. Dry places. June- Aug. 
Var. ambigua, Nutt . Stony fields . August . 
biennis, L. GE. grandiflora, Ait. (E. parviflora, L. Fields and 
meadows . June-August . 
LUDWIGIA, L. 
palustris, Ell. Stagnant water. July-October, 
alternifolia, L. Swamps . July- August . 
CiRC^A, Tourn. Enchanter'' s Nightshade. 
lutetiana. Var. 1 . canadensis, L . 
Var. 2. alpina. C. alpina, L. 
Damp shady woods . July- August . 
Sub-Order Halorage^e. 
Proserpinaca, L. Mermaid Weed. 
palustris, L. In water . July- August . 
Myriophyllum, Vaill. Water Milfoil. 
spicatum, L. Deep water . July- August . 
verticillatum, L. Ponds and streams. July-September, 
heterophyllum, Mzc/w7. Ponds and streams . July-September, 
ambiguum, iVz^^^. Ponds and muddy places. Long Island. July- 
August . 
tenellum, jBzg'eZ. Borders of ponds, northern counties . August. 
HiPPURis, L. Mare* s-tail . 
vulgaris, L. Ponds and lakes, Schenectady, Dr. Beck . Caynga 
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, Pwr^A. In water. August. 
Var.? terrestris. C. terrestris, Raf. Muddy places. July. 
