24 
URTICACEAE 
Ulmus [Tourn.] L. Elm. 
fulva Michx. Slippery Elm. Local. 
americana L. American Elm. 
Celtis [Tourn.] L. Nettle-tree. Hackberry. 
occidentalis L. Sugarberry. Local. 
occidentalis L. var. pumila Muhl. Mt. Holyoke, H. G. Jesup. 
occidentalis L. var. crassifolia (Lam.) Gray. Hadley, E. Tuck- 
erman ; Amherst. 
Cannabis [Tourn.] L. Hemp. 
SATIVA 2 
Humulus L. Hop. 
Lupulus L. Common Hop. 
japonicus Sieb. and Zucc. Clay-pit dumping ground, Spring- 
field, L. Andrews. 
Morus [Tourn.] L. Mulberry. 
rubra L. Red Mulberry. Uncommon. 
ALBA L. White Mulberry. Amherst, etc. 
Urtica [Tourn.] L. Nettle. 
gracilis Ait. 
URENS L. 
Laportea Gaud. Wood Nettle. 
canadensis (L.) Gaud. 
Pilea Lindl. Richweed. 
pumila (L.) Gray. 
Boehmeria Jacq. False Nettle. 
cylindrica (L.) Sw. 
Parietaria [Tourn.] L. Pellitory. 
pennsylvanica Muhl. Sugar Loaf, Mt. Toby, etc. 
SANTALACEAE 
Comandra Nutt. Bastard Toad-flax. 
umbellata (L.) Nutt. 
LORANTHACEAE 
Arceuthobium Bieb. 
pusillum Peck. Dwarf Mistletoe. Parasitic on Black Spruce. 
ARISTOLOCHIACEAE 
Asarum [Tourn.] L. Wild Ginger. 
canadense L. 
Aristolochia [Tourn.] L. Birthwort. 
Serpentaria L. Virginia Snakeroot. Included in Dr. Tucker- 
man’s list as from Turners Falls, but doubtful. 
