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Updated: May 19, 2025
Gates obtained a single plant among offspring of rubrinervis in which the sepals were red throughout, and to this he gave the name rubricalyx. When selfed this plant gave rise to both rubricalyx and rubrinervis, and in the second generation when the rubricalyx was selfed again the numbers of the two were approximately 3 to 1.
On the other hand, gigas and rubrinervis, oblonga and albida obviously bear the characters of progressive elementary species. They are not differentiated from lamarckiana by one or two main features. They diverge from it in nearly all organs, and in all in a definite though small degree.
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