METCAI^F: NOTES ON NORTH DAKOTA PLANTS 1 95 



1917) ; Arvidson Slough, Burke Co. (No. 567, Oct. 2, 191 7) ; Red Willow- 

 Lake, Griggs Co. (No. 376, Aug. 20, 1917, D. C. Mabbott). Common 

 in the Turtle Mountains. Bergman reports this from Ft. Totten, 

 Leeds and Towner. 



Carex scirpoides Schkuhr. {Carex interior Bailey.) Not previously 

 reported from North Dakota, which, however, falls within the range 

 commonly given. Only collected from grassy bog along border of Elsie 

 Lake, Richland Co. (No. 74, July 23, 19 17). 



Carex stipata Muhlenberg. Also found at Elsie Lake, Richland Co. 

 (July 23, 19 1 7). Bergman reports this plant from Fargo and Walhalla. 



Lemna trisulca Linnaeus and L. minor Linnaeus. Both of these plants 

 are common throughout the state in fresh water ponds, sloughs and 

 springs; the former was reported from over eighteen counties, the latter 

 from fifteen or more. Bergman gives only three localities for the former 

 (Grand Forks, Walhalla and Turtle Mountains) and six for the latter. 



Juncus alpinus Villars. Not previously reported from the state, 

 although included within the southern border of its range. Rather 

 frequent throughout the state in grassy bogs or wet shores bordering 

 lakes; reported from Elsie Lake, Richland Co. (No. 73, July 23, 1917); 

 Isabel Lake, Kidder Co. (No. 224, August 8, 1917); Metigoshe Lake, 

 Bottineau Co. (No. 524, Sept. 9, 1917); Lostwood S. 28-29, Mountrail 

 Co. (No. 574, Oct. 3, 191 7); Hobart (No. 240, Aug. 4, 1917, D. C. 

 Mabbott) and Eckelson Lakes, Barnes Co.; Smoky Lake, McHenry 

 Co. (No. 428, Aug. 29, 1917, D. C. Mabbott) and Upsilon Lake, Rolette 

 Co. (No. 449, Sep . 4, 1917, D. C. Mabbott). 



Juncus longistylis Torrey. Rather rare throughout the state only 

 being reported from the borders of Lostwood, S. 28-29 Lake, Mountrail 

 Co. (No. 577, Oct. 3, 1917); Lake George and Round Lakes (No. 396, 

 Aug. 25, 1917, D. C. Mabbott) in McHenry Co., and McDonough Lake, 

 Pierce Co. Bergman records this plant from Williston. 



Spiranthes romanzoffiana Chamisso. Rare, found along swampy 

 border of Lake George, Drake, McHenry Co. (No. 421, Aug. 28, 191 7, 

 D. C. Mabbott). Bergman records this plant from McLeod, Towner 

 and Devils Lake. 



Salix Candida Fluegge. Rather rare, reported from boggy borders of 

 Lake Elsie, Richland Co.; Camp Lake, McLean Co. (No. 410, Sept. i, 

 19 1 7) and Coville Twp. S. 1-2, Mountrail Co. Bergman Hsts this from 

 Valley City, Walhalla and Butte. 



Salix prinoides Pursh. Not previously reported from the state. 

 Rare, only reported from borders of Red Willow Lake, Griggs Co. 

 (No. 375, Aug. 20, 1917, D. C. Mabbott); Rush Lake, Cavalier Co.; 

 Denbigh Lake, McHenry Co. ; Upsilon Lake, Rolette Lake and Sweet- 

 water Lake, Ramsey Co. 



Salix serissima (Bailey) Fernald. Very rare, being reported only 

 from swampy border of Upsilon Lake, Rolette Co. in the Turtle Moun- 

 tains (No. 464, Sept. 7, 1917, D. C. Mabbott). This extends the known 

 range of this plant westward as Bergman reports this plant only from 

 Walhalla, Pembina Co. 



