— 101 — 



Lyc op odium complanatum L. Collected by the writer in the 

 woods at the upper end of Swan Lake; in the woods at the base 

 of Mt. McDougal; and near Belton on the way to Lake Mc- 

 Donald. Infrequent except near Belton, where it was common. 

 Collected at McDonald's Lake by R. S. Williams. 



Lyc op odium selago L. Collected in the vicinity of Lake Terry 

 by R. S. Williams. 



Lycopodium obscurum L. Collected in the vicinity of Mc- 

 Donald's Lake by R. S. Williams. 



ISOETACEAE. 



Isoetes bolanderi Engelm. The writer collected this species 

 in quantity in shallow water along the shore of Swan Lake and 

 along Flathead Lake near the club house, both stations being in 

 the Flathead valley. The species was also collected at East 

 Boulder by Mr. Tweedy. 

 Iowa City, Iowa. 



NOTES ON AMERICAN FERNS: VII.* 



By William R. Maxon. 



The Status of Polypodium falcatum Kellogg. — Several 

 years ago the writer, in describing t Polypodium hesperium, the 

 common polypody of the vulgare type in the mountain region of 

 the Western United States, suggested incidentally that the 

 description of Polypodium vulgare var. occidentale Hook, was, 

 so far as it went, applicable to either of two forms occurring in 

 western North America: (i) The so-called P. falcatum Kel- 

 logg, and (2) another form, especially abundant in Alaska, 

 rather coriaceous in texture and commonly somewhat serrated 

 as the var. occidentale was orginally described. It was not sug- 

 gested that these forms were specifically distinct ; nor, in the 

 light of further studies of recent large collections, does this ap- 

 pear to be the case. Rather are the two to be merged under one 

 name, and the earliest name available is occidentale. A definite 

 decision upon the identity of occidentale, however, involved an 

 examination of Hooker's types preserved in the British Museum. 



*Published by permission of the Secretary of the Smithsonian In- 

 stitution. 



fProc. Biol. Soc. Washington 13: 200. 1900. 



