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Ferns--Geographical distribution; Plants--Classification


In collecting ferns and fern allies in Brown County, Minnesota, during the 1964 summer, six of the seven species previously recorded were found again and six fern species and seven horsetail species and varieties new to the records were collected.

Tao newly found in 1964 are: Botrychium virginianum var. virginianum, Osmunda clayfoniana, Woodsia obtusa, Woodsia oregana var. cathcartiana, Athyrium filix-femina var. michauxii, Cystopteris bulbifera, Equisetum hyemale var. pseudohyemale, Equisetum hyemale var. elatum, Equisetum scirpoides, Equisetum fluviatile, Equisetum palustre, Equisetum pratense, and Equisetum sylvaticum.

Voucher specimens of the nineteen taxa were deposited in the herbarium of Mankato Stole College. Duplicate specimens are in the University of Minnesota herbarium.

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