A summary of biological information on Dennstaedtia punctilobula (Michx.) Moore, hay-scented fern, is presented. It has a native perennial herbaceous species of North America which has its center of distribution in the Appalachian region. In Canada it is found from the East Coast to Ontario. It is a weed in native lowbush blueberry fields, upland pastures and roadsides, particularly in the eastern parts of its range, where it forms dense colonies.
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Cody et al. (1977) studied this question.