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aperture membrane
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Noun
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aperture
membrane
(
plural
aperture membranes
)
(
palynology
)
Section of
exine
forming the base of an
aperture
1952
, Gunnar Erdtman,
Pollen Morphology and Plant Taxonomy
[1]
,
→ISBN
, page
466
:
In germinating grains the
aperture membrane
is pushed open like a lid.