440 MIXXRSOTA ROTAXICAL STUDIES 



makes the same error. The description is that of M. parviflora L., 

 and not of M. boreaUs Wallm. 



Pil)er, in the Flora of Washington, mentions only M. rotundi- 

 folia, although M. parviflora is included by Howell as above 

 mentioned. 



Greene, in the Manual of the Botany of the San Francisco Bay 

 Region, 64, giyes a correct characterization of both M. parviflora 

 and M. horealis, but does not mention M. rotiindifolia. The latter 

 is known to occur in California, but possibly not in the area covered 

 by Greene. 



It is of interest here to note erroneous determinations of speci- 

 mens from several of the larger herbaria in the United States. 

 The following are specimens of M. rotundifolia that have been con- 

 fused with and distributed under the name of M. borcalis: 



Klamath River, Cal. Chandler 1405. 



Mt. Shasta, Siskyou Co., Cal. H. E. Brown, June, 1897. 

 Provo, Utah. M. E. Jones 5501, June 25, 1894. 

 Vancouver, Wash. E. P. Sheldon 13035. October 18, 1903. 

 Milton, Umatilla Co., Ore. H. E. Brown 36, August 26, 1893. 



The following specimens of M. rotundifolia have been erroneously 

 determined as M. parviflora and distributed as such : 



Boulder, Colo. Frank Tweedy 4974, July, 1902. 



Bay Farm Island, Cal. J. Burt Davy, September 24, 1898. 



Leeds, North Dakota. J. Lunell, July 30, 1904. 



The following are specimens of M. horealis which have been 

 collected and distributed as M. rotundifolia: 



Limestone, Crook Co., Wyo. A. Nelson 9532. 



Leeds, North Dakota. J. Lunell. August 1, 1899. 



Turin, Marquette Co., Mich. Bronson Barlow, August 28, 1901. 



Specimens of ^L borcalis correctly labelled have been collected 

 from the following places ; 



Philadelphia, Pa. Isaac C. Martindale, .August, 1880. 



Kaign's Point, N. J. Ex Herb. Isaac Burke, Phila. 



Camden, N. J. Isaac C. Martindale, 1879. 



Brazos, Santiago. Texas, G. C. Neally 34, 1889. 



Old San Bernardino, Cal. S. B. Parish 2057. May. 1891. 



San Louis Obispo Co., Cal. Geo. B. Grant 746, April, 1903. 



Stockton, Cal. J. A. Sanford, 1890-91. 



Humboldt Co., Cal. C. C. Marshall, 1888. 



Alton, Humboldt Co., Cal. J. P. Tracy 3687. June. 1912. 



