REPORT ON A COLLECTION OF PLANTS FROM SAN 

 JUAN COUNTY, IN SOUTHEASTERN UTAH. 



BY ALICE EASTWOOD. 



[ With Plates xliv-xlvi. ] 



FIELD REPORT. 



The plants described in the following report were col- 

 lected in the valley and on the plateaus of the San Juan 

 River, from near the McElmo Creek junction to where 

 Willow Creek joins the San Juan. A few were collected 

 along the lower part of McElmo Creek, which really 

 forms part of the valley of the San Juan. 



From Mancos in southwestern Colorado to Willow 

 Creek in southeastern Utah is about one hundred and 

 fifty miles, making a total journey of probably three hun- 

 dred miles. Owing to a limited vacation, eight days was 

 all the time that could be spared for the exploration, the 

 collection is necessarily incomplete. Besides the mules 

 that we rode, we had one pack animal to carry all sup- 

 plies and my constantly increasing botanical acquisitions. 

 Under the circumstances I had to curb my zeal for col- 

 lecting, and only of those plants that seemed new or rare 

 did I collect liberally. The botanical survey of the coun- 

 try could not be so thorough as would have been possible 

 with more time and means. 



Mr. T. S. Brandegee, when with Hayden's Survey, 

 explored and collected as far as Recapture Creek, which 

 is about seventy miles from Mancos, finding several species 

 peculiar to the region and not since rediscovered in any 

 other locality. 



It was with the knowledge of the isolation of some spe- 

 cies discovered there arid the hope of finding more by 

 going farther, that I gladly accepted Mr. Alfred Wether- 



Pboo. Cal. Acad. Sci., 2d Ser., Vol. VI. August 1, 189C. 



