-
```
What steps will reproduce the problem?
1.http://flora.huh.harvard.edu/china/delta/www/ident.htm
2.http://flora.huh.harvard.edu/china/delta/families_angiosperms.ink or any of
the .ink files on thi…
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The current definition of sperm cell (A haploid male reproductive cell (usually two in number); during double fertilization, one fuses with the female gamete (egg cell) to produce a zygote while anoth…
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Plant gametangium was part of the existing tracker for archegonium, antheridium, and gametangium (https://sourceforge.net/tracker/index.php?func=detail&aid=3109542&group\_id=76834&atid=835555\), but I…
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As discussed at POC meeting on 6/30/10, made new term embryo sac ([PO:0025074](http://purl.obolibrary.org/obo/PO_0025074)): a female gametophyte in angiosperms.
Is_a female gametophyte. Antipodal cel…
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We currently have the term middle layer ([PO:0004700](http://purl.obolibrary.org/obo/PO_0004700)): Usually a single cell layer between tapetum and endothecium which almost invariably degenerates early…
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response to karrikin
A change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a karrikin stimulus. Karrikins a…
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I was wondering why there is no gamete term in PO. Sperm cell and egg cell are part of children of male and female gametophyte, respectively, but they are not siblings under a common parent 'gamete'.…
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companion cell ([PO:0000071](http://purl.obolibrary.org/obo/PO_0000071))
'''current definition:''' A specialized parenchyma cell associated with a sieve-tube member in angiosperm phloem and arising f…
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The existing definition of egg cell (A non-motile cell at the apex of the embryo sac immediately adjacent to the micropyle and associated with the synergid cells) only encompasses angiosperms.
Propos…
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Moss ontology has requested the term theca. We already have the term theca ([PO:0009069](http://purl.obolibrary.org/obo/PO_0009069)) to describe paired microsporangia in angiosperms. Maybe we should c…