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term: stipule development
definition: The process whose specific outcome is the progression of the stipule over time, from its formation to the mature structure. A stipule is one of (usually) a pair o…
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Pollen sac ([PO:0009070](http://purl.obolibrary.org/obo/PO_0009070)) is currently named microsporangium, with pollen sac as synonym.
I suggest that we us microsporangium as a more general term and r…
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We need antheridium and archegonium in the PO. Consider adding gametangium as parent.
Proposed definitions:
Gametangium: A plant organ (or cardinal organ part?) that is part of a whole plant in the …
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Suggest adding a new term gametophytic perianth for use with mosses.
Proposed definition: A collective phyllome structure that consists of two or more of the most distal parachaetal bracts on an axis…
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Do we need to add parietal cell layers for non-angiosperms? Parietal layer just means wall layer, and it is sometimes used as a general term for the layers of the anther wall inside the exothecium (e…
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The following suggestions have been reviewed by RW, DWS, and MAG. All definitions will reference Esau's Anatomy of Seed Plants.
phloem ([PO:0005417](http://purl.obolibrary.org/obo/PO_0005417))
curre…
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At the POC meeting on 4-17-12, we agreed to make ovule a plant organ, instead of a cardinal organ part. It is part of carpel, which is a plant organ, but we already have other examples of organs that …
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egg apparatus ([PO:0020096](http://purl.obolibrary.org/obo/PO_0020096)) has no is_a parent.
Suggest making it a child of the new term embryonic plant structure.
current def: "The egg cell and two sy…
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PO does not have equivalent terms for these CL terms, because it was set up for only angiosperms. Suggest we add terms like these when we work on the revisions of conducting tissue and cells. The CL t…
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The following terms were assigned is_a parents, based on their definitions:
[PO:0008004](http://purl.obolibrary.org/obo/PO_0008004) fruit aleurone layer: An aleurone layer of the grass caryopsis, its…