No. 50.] 191 
Aristipa, L. 
dichotoma, Michx. Barren fields. July. 
gracilis, Ell. Sandy fields. Long Island. 
CaLamacrostis, Roth. 
canadensis, P. de Beauv. Wet meadows. August. 
coarctata, Torr. in Gray’s Gram. g Cyp. C. canadensis, Nutt. 
Arundo coarctata, Torr. fl. Wet thickets. Aug. 
inexpansa, Gray. Swamps; northern and western counties. July. 
arenaria, Roth. Arundo arenaria, L. Sandy seacoast of Long 
Island. August-September. 
ANTHOXxANTHUM, L. Sweet-scented Vernal Grass. 
§ odoratum, LZ. Moist meadows and open woods. June-August. 
Aira, L. Hair Grass. 
flexuosa, L.. Dry woods and rocky hills. June. 
cespitosa, LZ. A. aristulata, Torr. jl. Moist situations, along 
rivers. June. 
atropurpurea, Wahl. Sources of the Hudson, Essex county. Aug. 
Trisetum, Pers. 
; palustre, Torr. Avena pennsylvanica, L. A. palustris, Miche. 
Wet meadows. May-July. 
purpurascens, Torr. Avena striata, Michx. Northern and wes- 
tern counties. Wet woods and banks of rivers. 
June. 
molle, Trin. Avena mollis, Miche. Rocky banks of rivers ; 
northern and western counties. . July. 
Hotcuvs, L. Soft Grass. 
§ lanatus, LZ. Wet meadows. July. 
Hierocuioa, Gmel. 
borealis, R, g- S. Holchus odoratus, Z. H. fragrans, Ph. Se- 
neca Grass. Wet meadows. May. 
alpina, R. §- S. High mountains of Essex county. June. 
Uraeris, Nutt. 
aristulata, Nutt. Sandy shores about New-York, and on the sea- 
coast of Long Island. August. 
Arunpvo, L. Reed Grass. 
phragmites, L. Borders of ponds and swamps. August. 
