| In adventitious embryony, the embryo develops directly from nucellar or chalazal tissue without an intervening gametophyte stage. |
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| A nucellar dome has been formed in the massive nucellar cap and the integument has overgrown the nucellus and formed a wide-open micropyle. |
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| The female gametophyte grows at the expense of nucellar tissue but remains enclosed within its remains. |
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| In sections of caryopses, greenish yellow fluorescence was observed in the cell walls of the chalaza and the outer layers of the nucellar projection. |
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| The fossil has a relatively well preserved nucellar epidermis, which may imply the presence of a perisperm. |
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| The others are asexual, nucellar embryos with the same genotype as the parent tree. |
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| Anatomical observations on the nucellar apex of Welwitschia mirabilis and the chemical composition of the micropylar drop. |
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| In their definition the nucellar cap is always multiseriate, in contrast to that of Tilton where it may be either uniseriate or multiseriate. |
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| He wrote that such nucellar proteins likely are responsible for processing cellular compounds that are secreted into the drop. |
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| The nucellar cells that limit the embryo sac are elongated tangentially. |
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