A Grammatical Dictionary of Botanical Latin

callosus,-a,-um (adj.A): callose, callous, hard and thick; “having the texture of a callus” (Fernald 1950); "the plugs of material accumulating at ends of sieve tubes of the phloem of higher plants and in roughly comparable cells in the stems of Polytrichum" (a moss) (C&A); with a thick, hard skin, callous, as the skin of an egg or olive; solid, hard, thick; also possessed of a callus, a hardened thickening;

- folia alterna, rarius opposita, coriacea, saeре imbricata, margine et apice saepe callosa (B&H), leaves alternate, more rarely opposite, leathery, often imbricate, at the margin and apex often callose.

- vexillum orbiculatum v. rarius ovatum, supra unguem brevem saepius 1- vel 2-callosum ; (B&H), the vexillum orbiculate or more rarely ovate, more often with one or two callosities above the short claw.

- vexillum suborbiculatum, ad unguem brevissinmm intus callosum (B&H), the vexillum suborbiculate, hard-thickened inside to the very short claw.

- vexillum amplum, patens, supra unguem brevem intus transverse callosum (B&H), the vexillum large, spreading, inside transversely hard-thickened above the short claw.

- vexillum supra unguem brevem intus nudum, v. callosum, v. rarius auriculis inflexis appendiculatum (B&H), the vexillum above the short claw inside naked, or hard-thickened, or more rarely appendaged with inflexed auricles.

- basi auriculis latis inflexis 2-appendiculatum et intus 2-callosum (B&H), at the base with broad inflexed auricles, with two appendages and inside with two hard-thickenings.

- parte inferiore persistente recurva v. revoluta apice calloso-dilatata (B&H), in the lower part persisting, recurved or revolute, at the apex thickened-dilated.

- folia acicularia, erecta, incurva, apice callosa, (B&H), the leaves acicular [i.e. narrow and stiff], incurved, at the apex callous.

- lobi 5, subulati, apice callosi (B&H), lobes 5, subulate, at the apex hard-thickened.

- foliis margine calloso cicctis (DeCandolle), with leaves encompassed by a hard-thickened margin.

ecallosus,-a,-um (adj.A): lacking hard-thickenings;

- basi auriculis latis inflexis 2-appendiculatum et intus 2-callosum (B&H), at the base with broad inflexed auricles, with two appendages and inside with two hard-thickenings.

- exillum amplum, reflexum, ecallosum, nudum v. auriculis parvis inflexis (B&H), the vexillum large, reflexed, lacking hard-thickenings or with small inflexed auricles.

Callicostella, a genus of mosses with a robust, double costa in the leaves, “nervis callosis,” with thick nerves.