Vol. VII, pp. 65-80 May, 1892 



PROCEEDINGS 



OF TI!K 



BIOLOGICAL SOCIETY OF WASHINGTON. 



DESCRIPTIOXS OF NEW PLANTS FROM SOUTHERN 

 CALIFORNIA, NEVADA, UTAH, AND ARIZONA. 



BY FREDERICK VERNON COVILLE* 



In January, 1891, an expedition was sent out by the United 

 States Department of Agriculture to make a l)iological survey of 

 Death Valley, in southeastern California, and the adjacent regions. 

 As several months must elapse before the report on the Ijotany 

 of the expedition can be presented to the pul)lic, the following 

 descriptions of new plants are now pul)lished with the consent 

 of the department authorities. 



Aplopappus interior sj). nov. 



Related to A. linearifolms DC, but difl'ering in its shorter leaves 

 (12 to 20 mm.), subulate-bracteate peduncles, shorter acute in- 

 volucral bracts, and smaller rays 9 to 11 mm. long. In A. 

 linear if alius the larger leaves are 30 to 40 mm. long, the peduncles 

 leafy-bracted, the involucral ))racts 11 to 14 nun. long, includ- 

 ing the filiform-subulate acumi)iation, and the rays 13 to lo mm. 

 long. 



Type specimen in the United States National Herbarium, No. 

 794, Death Valley Expedition: collected May 20, 1891, about 

 four miles south easl!» from Mill Canon divide, at the northern 



* Presented at a meetino- of the irioloiiical Soeiety of Washington, .\ piil 

 Ki, 1892. 



ii — Hu)i..^Sof., Wash., N'ui,. \'I1, 189-.'. (fi.'i) 



