VOL. XVI, PP. 45-46 MARCH 19, 1903 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



THREE NEW PLANTS FROM NEW MEXICO. 

 BY AVEN NELSON AND T. D. A. COCKERELL. 



The material on which this paper is based has already been 

 described in a general way in the preceding article. It was 

 collected by Mr. and Mrs. Cockerell and has been studied 

 conjointly by Professor Nelson and Mr. Cockerell. 



Humulus Lupulus neomexicanus, n. var. 



Leaves divided or sometimes parted, the segments varying from 

 broadly lanceolate to nearly linear, acuminate, freely sprinkled with 

 resin particles on the lower face; fruiting bracts ovate-lanceolate, usu 

 ally acuminate, finely pubescent. 



The hop indigenous in New Mexico seems to possess these characters 

 in variance with the usual and more widely distributed form and may 

 probably best stand as a variety. The type of the variety is No. 14, 

 T. D. A. Cockerell, Beulah, N. M. (Canadian Zone) August, 1902. It is 

 also abundant on the Vall6 Ranch, Pecos, N. M., and was collected by 

 Professor Wooton in the White Mountains of that State (No. 294). 



Polemonium pterospermum, n. sp. 



Low, 1-2 dm. high, glabrate below, glandular-puberulent above and 

 in the inflorescence; stems several, spreading or decumbent at base, 

 terete but for a few acute longitudinal ridges, very leafy, especially 

 13 PBOC. BIOL. Soc. WASH. VOL. XVI, 1903. (45) 



