144 
DWIGHT MUNSON MOORE 
Orchidaceae — Orchid Family. 
Orchis spectabilis L. Showy orchid. I. 
Spiranthes gracilis (Bigel) Beck. (Jones.) 
Salicaceae —Willow Family. 
Populus alba L. Silver leaved poplar. III. 
Populus deltoides Marsh. Cotton-wood. V. 
Salix discolor Muhl. Pussy willow. Talbot Hall. 
Juglandaceae — Walnut Family. 
Carya cordiformis (Wang) I\. Koch. Bitternut. I. II. 
Carya ovata (Mill) K. Koch. Shellbark hickory. I, II. 
Juglans cinerea L. Butternut; White walnut. II. 
Juglans nigra L. Black walnut. I, II, III, V. 
Betulaceae — Birch Family. 
Alnus glutinosa L. European alder. V. 
Betula alba L. Cut-leaved weeping birch. V. 
Betula populifoUa Marsh. White birch. V. 
Corylus avellana L. European hazelnut. V. 
Ostrya virginiana (Mill) K. Koch. American hop-hornbeam. IV. 
Fagaceae — Beech Family. 
Castanea dentata (Marsh) Borkh. Chestnut. I, II. 
Fagus grandifolia Ehrh. Beech. I, II, III. 
Quercus alba L. White Oak. I, II. 
Quercus bicolor Willd. Swamp white oak. III. 
Quercus coccinea Muench. Scarlet oak. II, III. 
Quercus macrocarpa Michx. Burr oak. III. 
Quercus pedunculata Ehrh. English oak. III. 
Quercus Prinus L. Chestnut oak. III. 
Quercus rubra L. Bed oak. III. 
Urticaceae — Nettle Family. 
Celtis occidentalis L. Hackberry. I, II, V. 
Humulus lupulus L. Hop vine. IV, V. 
Laportea canadensis (L.) Gaud. Wood nettle. I. 
Madura pomifera (Raf.) Schneider. Osage orange. IV. 
Moms rubra L. Red mulberry. I, V, VI. 
Parietaria pennsylvanica Muhl. Pennsylvania pellitory. I, II. 
Pilea pumila (L.) Gra}^ Rich weed; clear weed. I, II. 
Ulmus americana L. White elm. I, II, III, IV, V, VI. 
Ulmus fulva Michx. Red elm. I, II, VI. 
Polygonaceae — Buckwheat Family. 
Polygonum aviculare L. Knot-grass; door weed. IV, V, VI. 
