IO2 UNIVERSITY OF MISSOURI STUDIES [250 



Family 30. CORYLACEAE Mirbel. Hazel family. 



116. CORYLUS L. HAZEL. 



313. C. rostrata Ait. BEAKED HAZEL NUT. 



Abundant in canons in the mesas, foothills, and the moun- 

 tain plateau, 5600-8000 ft. (Daniels, 116). 



NOVA SCOTIA to NORTH DAKOTA; GEORGIA to COLORADO. 



Order 17. URTICALES. 

 Family 31. URTICACEAE Reichenb. Nettle family. 



117. TTRTICA L. NETTLE. 



314. U. gracilis Ait. SLENDER NETTLE. 



Common in stream-flats both in and out of shade, 5100- 

 9000 ft. (Daniels, 583). Also mountains between Sunshine 

 and Ward (Rydberg). 



NOVA SCOTIA to ALASKA; NORTH CAROLINA to NEW MEXICO 



118. PARIETARIA L. PELLITORY. 



315. P. Pennsylvanica Muhl. PENNSYLVANIA PELLITORY. 

 Moist places under rocks and in canons and on shady 



banks of streams, 5100-7000 ft. (Daniels, 498). 



ONTARIO to BRITISH COLUMBIA; FLORIDA to MEXICO. 



316. P. obtusa Rydb. OBTUSE-LEAVED PELLITORY. 

 Sunset Canon, 6000 ft. (Rydberg). 

 COLORADO to UTAH; TEXAS to CALIFORNIA. 



Family 32. CANNABINACEAE Lindl. Hemp family. 



119. HITMTJLUS L. HOP. 



317. H. Lupulus Neo-Mexicanus A. Nels. & Cockerell. NEW 

 MEXICO HOP. 



Rocky banks of canons and along streams and in waste 

 places as along fences, 5100-8000 ft. (Daniels, 573). 

 WYOMING to UTAH; NEW MEXICO to ARIZONA. 



