| In both species the gametophytic cells of the placenta generally have less prominent wall labyrinths than sporophytic cells. |
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| In both species there are several layers of cells with labyrinthine walls on both the sporophytic and gametophytic side of the placenta. |
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| Male sporogenesis begins with the division of a diploid sporophytic cell that gives rise to the tapetal initial and the sporogenous cell. |
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| Following germination, sporophytic embryo tissue was separated from surrounding female gametophytic tissue. |
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| The Asteraceae family presents a sporophytic self-incompatibility system, although a partial breakdown of the incompatibility system has been found in several species. |
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| Seed development requires co-ordinated expression of embryo and endosperm and is controlled by sporophytic, male gametophytic, and female gametophytic genes. |
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| Self-incompatibility mechanisms have traditionally been found to operate in styles with either a sporophytic or gametophytic incompatibility system. |
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| Like all land plants, they have a life cycle referred to as alternation of generations, characterized by alternating diploid sporophytic and haploid gametophytic phases. |
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