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bathyphyll
References
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bathyphyll

frond
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The Information Architects of Encyclopaedia Britannica

The Information Architects maintain a master list of the topics included in the corpus of  Encyclopædia Britannica, and create and manage the relationships between them.

The Information Architects of Encyclopaedia Britannica

Learn about this topic in these articles:

  • tree fern
    fern
    / Ecology

    …these the lower leaves (bathyphylls) are usually vegetative and are often different in form from those at the higher levels (acrophylls), which are entirely or partly fertile in that they bear sporangia over their surfaces.

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    …these the lower leaves (bathyphylls) are usually vegetative and are often different in form from those at the higher levels (acrophylls), which are entirely or partly fertile in that they bear sporangia over their surfaces.

    Read More