78 
IOWA ACADEMY OP SCIENCES. 
The collections on which the notes are based are deposited 
in the herbarium of the State University of Iowa. To avoid 
repetition the dates of collecting are here given for the several 
localities: 
Mason City— July 6-9, 1896. 
Clear Lake — July 10th-13th. 
Forest City, Lake Edwards and the northern part of Hancock 
county*^— July I7th-21st. 
Spirit and the Okoboji lakes— July SOth- August 3d. 
Rock Rapids and Granite — August 3d-7th. 
The following is an annotated list of the species which were 
collected:! 
Nymplicea reniformis D. C. Pound in Clear Lake and in the 
Big Sioux river near Granite. These localities have not been 
noted heretofore. 
Nupliar advena Ait. f. Additional localities: Mason City, 
Forest City, Spirit Lake. 
MyriopTiyllum spicatum L. Additional localities: Lake Oko- 
boji, common. Mostly in bud. Clear Lake, very common. 
All in bud. Growing in two to four feet of water. 
Myriopliyllum heterophyllum Mx. Clear Lake. Rather more 
common than the preceding. Forest City, not common in Lime 
creek. 
Utricularia vulgaris L. Rather rare at Forest City, in Lime 
creek. 
Geratophyllum demersum L. Very common in West Okoboji 
lake, forming beautiful branching tufts in water three to six 
feet deep. 
Elodea canadensis Mx. Very common in Lake Edwards and 
in the Okoboji lakes. New localities: Rock Rapids, in Rock 
river. Not common. Clear Lake, very common. 
Vallisneria spiralis L. This interesting species was very com- 
mon in Clear Lake, especially at the west end, but none were 
found in flower. 
In Spirit Lake, along the western shore, small specimens of 
pistillate plants were collected in shallow water. These grew 
on a gravelly bottom. 
A splendid lot of specimens were collected at the lower end 
of East Okoboji lake, near its juncture with the west lake. 
The leaves ranged in length from one to at least four feet, and 
* Partly made in September, 1895. 
+ For convenience in making comparisons the nomenclature is largely that of Mr. 
Cratty’s paper. 
