182 [ ASSEMBLY 
OrpvER JUNCAGINACE®. ‘Tue Arrow-Grass Trise. 
TrictocHin, L. Arrow Grass. 
palustre, Z. Marshes. Near Buffalo, Dr. Kinnicut. Salina. 
maritimum, L. Salt marshes, near New-York and Salina. July. 
elatum, Nutt. Marshes. Gorham, Dr. Atkin. Near Bridge- 
water, &c. Dr. Gray. June-July. 
Scuevcuzeria, L. 
palustris, ZL. Sphagnous swamps; western and northern counties. 
July. Near Albany, Dr. Beck. : 
OrvErR PISTIACEZ. Tue Duckweep TRIBE. 
Lemna, L. Duckweed, Duck’s-meat. 
polyrrhiza, L. Ditches and stagnant waters. 
gibba, L. Near Liverpool, Onondaga county. Pursh. 
minor, L. Stagnant waters. 
trisulca, Z. Ditches and ponds. July. 
OrpER CYPERACE#. ‘Tue Sepce TRrIse. 
Duuicuium, Rich. 
spathaceum, Pers. Borders of ponds, &c. August-September. 
Cyrerus, L. Galingale. 
flavescens, L. Boggy places, especially near salt water. August- 
September. 
diandrus, Torr. Wet places, near salt water. September. 
Var. castaneus, Torr. Muddy and sandy shores. August- 
September. 
Nuttallii, Torr. Borders of salt marshes. August. 
Michauxianus, Schultz. Borders of salt marshes. August. 
strigosus, L. Low moist grounds. August. 
repens, Ell. CC. phymatodes, Muhl. Wet sandy places. August. 
filiculmis, Vahl. C.mariscoides, Ell. Dry sterile soils. Sept. 
Grayii, Torr. Sandy fields, Long Island. August-September. 
dentatus, Torr. Sandy wet places. September. 
inflexus, Muhl. C. uncinatus, Pursh. Sandy banks of rivers and 
lakes, north and west of Albany. Albany. Aug. 
Schweinitzil, Torr. Sandy shore of Lake Ontario, near Brad- 
dock’s Bay. Dr. Bradley. ; 
