A Grammatical Dictionary of Botanical Latin

Callus,-i (s.m.II), abl. sg. callo; callum,-i (s.m.II), abl. sg. callo, 'the hard skin of animals;' “a hardened part; anything which has acquired unusual hardness and toughness. Also used in the sense of verruca; [obsol.] also the hymenium of certain Fungals” (Lindley); callus, a hardened thickening, cuticular swelling; the hard, often hairy swelling from which the lemma and palea arises in grasses; a thickening of the horny layer of the epidermis; a thickened area; callus, also callous, callosity, plural calluses, callouses, also calli; tylosis,-is (s.f.III), abl. sg. tylose: callosity, a (diseased, unnatural, unusal) thickening and hardening of an organ or body part; a protrusion from a plant parenchyma cell into an adjacent tracheary element; tyl-, tylo-, -tylus,-i (s.m.II), q.v.: in Gk. comp. knobbed, knotted, padded, callose;

- frondibus a callo radicali crasso subconico-elevato expansis, with fronds expanded from a thick subconic-elevated root callus.

- capsula 3-cocca, 3-locularis; loculis extus callis duobus notatis, 1-spermis (Swartz), capsule with 3 meristems, 3-locular; with the locules marked externally with two callosities [i.e. hardened parts], 1-seeded.

- callus tenuis, in forma litterae “V,” faciebus lateralibus superioribusque liberis, pubescentibus, callus thin, V-shaped, with the lateral and upper surfaces free, pubescent.

- planta callo rhombiformi distincta, plant distinct by the rhombiform callus.

- callus in forma litterae “Y”, curvus, hispidulusque, callus Y-shaped, curved and hispidulous.

- callus columnaque leniter pubescentes, callus and column lightly pubescent.

- ovarium subsessile; post florem delapsum toro mox elongato stipitatum et cum eo continuum, apice acutum et post stylum delapsum callo stigmatiformi terminatum (B&H), ovary nearly sessile; after the flower has fallen away, stalked by the torus soon elongated and continuous with it, at the apex acute and after the style has fallen away, terminated by a stigmatiform callus [i.e. hard thickening].

- callus ad basin stigmatis (styli sic dictus lobus v. dens), haud constans videtur et imprimis ineunte anthesi observatur (B&H), the callus is at the base of the stigma (hence called a lobe or tooth of the style), seems hardly constant and expecially at the onset of anthesis is observed.