64 Professor Douglass and Dr. Torrey 
Potyeynia. 
Rosa parviflora Ehrh. Willd. On Lake Superior. 
July 4th. 
Rubus saxatilis B. canadensis Mx. Head of the Missis- 
sippi. Swamps. 
Geum rivale L. Shores of Lake Huron, May 30th. 
Potentilla anserina L. Near Detroit. 
pennsylvanica Mz. Willd. Willdenow and 
Geum agrimonoides Pu. arch quote as a 
synonim of this plant the G. Pennsylvanica of Gmelius 
Flora Sibirica, 3. t. 34. f. 1, but the figure is altogether un- 
like our plant, and does not agree with Michaux’s descrip~ 
tion of it. Willdenow however, remarks, ‘Planta sibirca 
majus est glabra sed foliorum florumque structura eadem ac 
29 4 
in Americana”! Sp. pl. 2. p. 1099. 
POLYANDRIA. 
Monoeynia. 
Actaea Americana Ph. 
Rubra Wiutp. Shores of Lake Huron. 
Spicata Mx. 
Sarracenia purpurea L. (Ko-ko-koh Mokasin. Owls’ 
Mockasin.) Point Keewenah, Lake Superior, June 26th. 
Cyamus luteus Nutt. } The only difference 
Flavicomas Sauiss. Px. | Willdenow makes between 
Nelumbium luteum Wixtp. >his N. speciosum and lute- 
Nymphea Nelumbo Waut. | um is that the former has 
N. Nelumbo BI. J hispid peduncles and peti- 
oles, and the latter smooth ones. He however describes a 
variety of the N. speciosum with smooth peduncles and pe- 
tioles, and the American plant according to Nuttall and the 
present Prof. Barton had them sometimes partly muricate. 
Hence there seems to be but little difference between the 
two species. The colour of the flowers, unless there are 
other distinctive characters, is not of much consequence. 
Found in great quantities near Sandusky Bay, west end 
of Lake Erie. 
