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By: Pullen, Thomas MType: ArticleIn: American fern journalVolume: 56Series:Issue:Date: 1966Page Range: 37--37Publication Info: [Washington, etc.] American Fern SocietySubjects:
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By: Pullen, Thomas MType: ArticleIn: RhodoraVolume: 69Series:Issue:Date: 1967Page Range: 61--62Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],Subjects: