A Grammatical Dictionary of Botanical Latin

albuminosus,-a,-um (adj.A): albuminous, having albumen or of the nature of albumen; provided with abundant albumen; “furnished with albumen when perfectly ripe. A term exclusively applied to seeds” (Lindley); endospermous, q.v.

"This store of starchy or oily food-material [the albumin] accompanying the embryo, by which it is absorbed during germination, instead of during seed-formation as in exalbuminous seeds (semina exalbuminata) which lack such a separate store at maturity” (Stearn); see exalbuminous.

- [Nymphaeaceae] Semina arillo carnoso v. pulposo immersa v. nuda, nunc albuminosa, embryone orthotropo intra albuminis farinacei cavitatem prope hilum semi-immerso et intra sacculum amnioticum incluso, nunc exalbuminosa (B&H), seeds immersed in a fleshy or pulpy aril or naked, sometimes albuminose [i.e. with abundant albumen], with an orthotropous embryo within a cavity of farinaceous [i.e. mealy] albumen, half-embedded near the hilum and enclosed within an amniotic saccule, sometimes lacking albumen.