Orthotropal
Orthotropal , adjective
[Ortho- + Greek {not transcribed} to turn: compare French orthotrope.]
(Botany) Having the axis of an ovule or seed straight from the hilum and chalaza to the orifice or the micropyle; atropous.
This word has also been used (but improperly) to describe any embryo whose radicle points towards, or is next to, the hilum.
Also: Orthotropous