basipetal
ba·si·pe·tal
adjective
1.
of leaves or flowers; developing or opening in succession from apex to base
Origin
From basi- + -petal.
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.