URTICACEAE (Nettle Family) 

 ULMUS L. (Elm) 



532 U. FULVA Michx. (Slippery Elm.) A dozen trees in Fell Woods, 



Waverly; one tree at Little Birdseye. Infrequent. 



533 U. AMERICANA L. (American or White Elm.) Frequent. 



CELTIS L. (Hackberry) 



534 C. occiDENTALis L. (Hackberry.) Opposite Plymouth along river; 



below Plymouth along river ; near Pocono Knob. 



CANNABIS L. (Hemp) 



535 C. SATiVA L. One plant near Carbon street bridge, Scranton. 



HUMULUS L. (Hop) 



536 H. LUPULUs L. (Common Hop.) Occasional along the Susquehanna. 



BROUSSONETIA L'Her. 



537 B. PAPYRiFERA Vent. (Paper Mulberry.) One tree in Cherry Valley, 



Monroe County. 



MORUS L. (Mulberry) 



538 M. RUBA L. (Red Mulberry.) Several trees near Stroudsburg road 



to Cherry Valley, River near Kingston. 



539 M. ALBA L. (White Mulberry.) Spontaneous near houses. 



URTICA L. (Nettle) 



540 U. GRACILIS Ait. (Slender Nettle.) Common along fence rows. 



LAPORTEA Gaud. (Wood Nettle) 



541 L. CANADENSIS Gaud. Common in moist woods. 



PILEA Lindl. (Clearweed) 



542 P. PUMiLA Gray. Common in moist shaded places. 



BOEHMERIA Jacq. (False Nettle) 



543 B. CYLINDRICA Sw. Duryea Swamp, near Waverly, Taylor. 



PARIETARIA L. (Pellitory) 



544 P. PENNSYLVANicA Muhl. Taylor ledges, shaded rocky banks. 



SANTALACEAE (Sandalwood Family) 

 COMANDRA Nutt. (Bastard Toad Flax) 

 545 C. UMBELLATA Nutt. Common in dry grounds. Big Birdseye. 



LORANTHACEAE (Mistletoe Family) 

 ARCEUTHOBIUM Bieb. 

 546 A. PUSILLUM Peck. (Dwarf Mistletoe.) Lehigh Pond on dwarf 

 spruces. Bog near Tannersville, Prof. Porter. 



31 



