Here is how this plant is described in Cibo's manuscript (f. 53v):
"The dragon arum grows in shady places close to hedges. It has an upright stem two cubits high and as thick as a walking-stick, variegated in colour and smooth, so that it looks like a snake; it is mottled with blotches, mostly purplish; its leaves are folded one within the other, similar to those of the dock. The seed grows at the top of the stem in a cluster, first ash-coloured, and then, as it ripens, it grows saffron-coloured and red. Its root is large, round, white, covered with a thin skin. The plant is harvested when the seed is ripe; the juice is then squeezed from it and it is put to dry in the shade. The root is dug up when harvesting the fodder crops; it is cut into pieces which are skewered and dried in the shade. The root, drunk in watered wine, is warming. Boiled or roasted with honey, it makes a good linctus for asthma, ruptures, convulsions, phlegm coming from the head, and coughs; drunk with wine it has an aphrodisiac effect.[...] Moreover, it is said that those who rub their hands with the leaves of this plant, or who carry its root in their hands, cannot be bitten by vipers."