basipetal

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basipetal

[bā′sip·əd·əl]
(biology)
Movement or growth from the apex toward the base.
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2007), the secondary branches are initiated basipetally in Cynodon and amphipetally in the other genera of the clade.
The initiation, ontogeny, and subsequent anthesis of the secondary capitulum is homologous to that of a synflorescence or collection of primary capitula (Classen-Bockhoff, 1992; Harris, 1994; Kunze, 1969; Rauh & Reznik, 1953); that is, the individual or primary capitula are initiated in an acropetal sequence and develop acropetally, but they then undergo anthesis basipetally.
Within an individual SSP, differentiation will proceed basipetally, as described for the secondary capitula above (Fig.