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National Geographic : 1925 May
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THE NATIONAI. GEOGRAPHIC MAGAZINE Fronds somewhat reduced @ Painting by E. J . Geske SENSITIVE FERN (Onoclea sensibilis) A normal fertile and a sterile frond, the latter smaller than usual. Two distended berry like fertile segments containing the sporangia are shown below, magnified so times, and a single ripe sporangium, magnified 60 times.
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