A Grammatical Dictionary of Botanical Latin

Umbilicus, navel-like structure, such as the hilum of a seed; “the hilum of a seed; the scar formed by its separation from the placenta. (obsol.) the ostiolum of certain Fungals” (Lindley); (fungi) “a navellike depression; the single, strong attaching organ of some lichen thalli, composed of a large number of closely united hyphae” (S&D): umbilicus,-i (s.m.II), abl. sg. umbilico, nom.pl. umbilici, dat.& abl. pl. umbilicis [> L., the navel, the center, the middle; 'a projection in the middle of plants' (Lewis & Short)]; in Greek, omphalos (s.m.II), see omphalo-: in Gk. comp.: navel-shaped; opp. umbo, q.v.;

- semina oblonga, umbilico lato, matura e funiculo filiformi propendentia (B&H), seeds oblong, with a wide umbilicus, mature ones dangling from a filiform funiculus.

- semina umbilico conico foveolato (B&H), seeds with a conic pitted umbilicus.

- semina parva v. magna, recta v. curva, umbilico laterali v. basali poculiformi v. exsculpta (B&H), seeds small or large, straight or curved, with the umbilicus lateral or basal, cup-shaped or pitted.

- semina apice septi inserta, pendula, ovata, umbilico nudo, appendice carunculaeformi terminata (DeCandolle), the seeds inserted at the apex of the septum, pendulous, ovate, with a naked umbilicus, terminated by a caruncle-like appendage.

Hilum,-i (s.n.II), q.v., abl. sg. hilo: the hilum, a mark or scar on a seed (as a bean) marking the point of attachment of the ovule to the funiculus or placenta.