ACROPETAL

adj. developing upward from a base (Botany)

Adjective
1. of leaves or flowers; developing or opening in succession from base to apex
(antonym) basipetal
(classification) botany, phytology

(a.)
Developing from below towards the apex, or from the circumference towards the center; centripetal; -- said of certain inflorescence.
  

acropetal /ə'krɔpitəl/
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ACROPETO. BASIFUGO