56 . 
heterophylla, Pursh. S. 
8 implex, Pursh S. 
Hydrccharidaceae The Frog’s Bit Family 
Anacharis, Richard. 
Canadensis, Planchou. (Udora Canadensis, Nutt.) 
Valisneria, Micheli 
spiralis, Linn. Ell-grass 
ORCHIDACEAE The Orchis Family 
Orchis, Linnaeus. 
spectabilis, Linn. Showy Orchis 
Platanthera, Richard 
bracteata, Torr. 
leucopnaea, Nutt, 
psycodes. Gray 
peramoena. Gray 
Spiranthes, Richard. Ladies' Tresses 
Gracilis, Bigelow 
cernua, Richard 
Pogonia, Jussieu 
pendula, Lindl. (Triphora, Nutt.) 
Caiopogon, R. Brown 
pulchellus ,. R . Brown 
kicrostylis, Nuttail. 
ophioglossaides, Nutt. Adder's Tongue 
Liparis, Richard 
liliifolia, Richard. 
Corallorhiza, Haller. Coral-root 
multiflora, Nutt. 
Aplectrum, Nuttail. 
hyemale, Nutt. Putty-root 
