Wheeler: FLORA OF SOUTHEASTERN MINNESOTA. 369 
Sanicula gregaria, Thalesia unifiora, 
Sagittaria cuneata, Woodsia oregana. 
Solidago erecta, 
CATALOG OF SPECIES COLLECTED. 
The following catalog of plants contains only those collected by 
Mr. H. L. Lyon and the writer in the southeastern part of 
Houston county. With the exception of about ten species 
which were collected in Brownsville, they were all gathered in 
the townships of Mayville, Crooked Creek, Winnebago and 
Jefferson. 
The determinations were almost entirely made by the col- 
lectors, each determining the plants of his own collection. The 
determinations of the species of Physalis were kindly made by 
Mr. P. A. Rydberg, of Columbia University, and those of 
Quercus prinoides, velutina, coccinea and rubra, and Betula 
lenta by Professor C. S. Sargent. 
The nomenclature is that of Britton and Brown’s Illustrated 
Flora of the Northern United States and Canada. 
PTERIDOPHYTA. 
OPHIOGLOSSACEZ. 
Botrychium virginianum (L.) Sw. Schrad. Journ. Bot. 2: 
SLES - LOGO; 
Coll.: Lyon 38, Winnebago; 207, Mayville. June, July. 
Infrequent, rich woods and shady banks. 
OSMUNDACEZ. 
Osmunda claytoniana L. Sp. Pl. 1066. 1753. 
Coll.: Lyon 43, Winnebago. June. 
Common, shady hillsides and ravines. 
POLYPODIACE. 
Onoclea sensibilis L. Sp. Pl. 1062. 1753. 
Coll.: Lyon 326, Jefferson. Aug. 
Common, wet meadows and river bottoms. 
Onoclea struthiopteris (L.) Horrm. Deutsch. Fl. 2: 11. 1795. 
Coll.: Lyon 79, Winnebago; 208, Mayville. June, July. 
Common, moist thickets and river bottoms. 
