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By: Harms, Vernon L - Hudson, J HType: ArticleIn: RhodoraVolume: 76Series:Issue:Date: 1974Page Range: 39--44Publication Info: [Cambridge, Mass., etc.] New England Botanical Club [etc.]Subjects:
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By: Harms, Vernon L - Hudson, J H - Heilmanternier, JType: ArticleIn: RhodoraVolume: 82Series:Issue:Date: 1980Page Range: 239--280Publication Info: [Cambridge, Mass., etc.] New England Botanical Club [etc.]Subjects:
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By: Hudson, J HType: ArticleIn: The Canadian field-naturalistVolume: 65Series:Issue: 6Date: 1951Page Range: 197--210Publication Info: Ottawa Ottawa Field-Naturalists' ClubSubjects: