Micorseeds, hugh ovules with an seed embryo which was never fertilized?

i don't see what you speak of in pics, but hardened ovules can occur... some are more prone than others. An old female plant kept for yeas is more likely to have the problem than a young, fresh plant, but does not preclue possibility of a recently gown seed from having the poblem. i had a ggxww that had a bunch of hardened ovules... and multiple seeds had the issue. i have an old question on here about it, too... funny thing was long befoe i ever grew i had a conversation long forgot with a gower about this very same thing nearly 25 years ago.