I90 MSTCAIvF: NOTES ON NORTH DAKOTA PLANTS 



to North Dakota, but the other two are extremely unusual, 

 one, Sparganium americanum Nuttall not having been recorded 

 west of Iowa and the other Suaeda linearis (Ell) Moquin-Tandon 

 being known only along the coast and in the extreme southwest. 

 The appearance of this alkaline-saline-loving plant inland 

 may very well be compared to that of a few of the salt-loving 

 plants known only from the coast and isolated inland stations 

 in Western New York. As an addition to this group should be 

 mentioned Salix serissima (Bailey) Fernald, and 5. tristis Al- 

 lioni, both previously known from the state but found by us 

 growing in localities considerably more western than previously 

 reported. 



Scirpus nevadensis Watson seems to hold alone the distinction 

 of being a new plant to North Dakota that has a more western 

 range; this plant is rather common throughout the state and it 

 appears strange that it has not been recognized before; it is 

 always restricted to the strongly alkaline-saline lakes. One 

 may add also three other species known previously in North 

 Dakota, two of which, however, are here first reported east of 

 the Missouri River, Munroa squarrosa (Nuttall) Torrey and 

 Stanyleya pinnata (Pursh) Britton, and one, Thelypodium in- 

 tegrijolium (Nuttall) Endlicher, which was known from Dawson 

 but was found in the vicinity of Sink Lake, a few miles farther 

 northeast. 



A number of other records have been given also; these fall 



into two main groups, first those of plants that are decidedly 



rare throughout North Dakota and for which one or more new 



localities are cited, and second those whose distribution in the 



state as given in manuals is inadequate and often incorrect. 



Listed below are the most important of the first group or rarer 



plants : 



Arctostaphylos Uva-ursi (L.) Potamogeton zosterifolius Schu- 



Sprengel macher 



Juncus longistylis Torrey Sagittaria latifolia Willdenow 



Opuntia fragilis Haworth Salix Candida Fluegge 



Potamogeton Friesii Ruprecht Spiranthes romanzoffiana Cham- 



isso 



Most of these are rare on account of their restriction to certain 



