MMMavocado schreef
Avocado is a one-seeded berry. The papery membrane surrounding the
cotyledons is seedcoat. In the Mexican (Persea americana ssp. drymifolia)
and Guatemalan (P. americana ssp. nubigena) races, there is a single
seedcoat. In the West Indian race (P. americana ssp. americana), the coat is
separated into two distinct layers. But I've never heard anyone suggest
that the outer one is endocarp.

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Thank you!
Well, Mel, it is official now ...
PvR