(From lego, to gather). Wood; because its branches are gathered into bundles for domestic use; a term applied to many medical substances; as, lignum aloes, lignum guaiacum, lignum Quassiae, etc. vide in verbis.

Ligxcm Campechianum. See Campechenese lig-sum.

Lignum colubrinum; strychnos colubrina Lin. Sp. Pl. 271. It is of the same genus, perhaps the same species, which affords the nux vomica, and is, like it, intensely bitter and acrid. Like every poisonous substance, it excites the greatest commotions in the system, and is emetic, cathartic, diaphoretic, and anthelmintic, seeming to affect also the intellectual powers. As its name imports, it has been given to those bitten by serpents, to cure intermittents, and to destroy worms.

Lignum moluccense vel pavanae. The seeds of the tree, croton tiglium Lin. Sp. Pl. 1426, which affords this wood are called grana tiglii; and these, as well as the wood, are highly acrid, producing the most violent commotions in the whole body, with discharges from almost every excretory. The oil of the seeds is, however, perfectly mild; and the genus is nearly allied to the ricinus which affords the castor oil.

Lignum nephriticum. It is supposed that this wood and the Behen nuts are from the guillandina mo-ringa Lin. Sp. Pl. 546. The first is of a pale yellow, though it tinges wood of a fine blue colour; the taste is slightly acrid and bitterish. The nuts are mucilaginous and oily; their oil keeps long without rancidity. It has been used in itch, besides the disease from which its name is derived. .

Lignum rhodium, probably from the genista ca-nariensis Lin. Sp. Pl. 997. Much confusion has arisen respecting the real tree from which this wood is taken, in consequence of its being supposed the same with the as-ftalath us of Dioscorides; for the aspalathus of Galen was a bark. The aspalathus of the moderns was the calambour wood, or the lignum aquilae, resembling the lignum aloes. The lignum rhodium, at present sold, is in long crooked pieces, full of knots, of a reddish yellow colour. The largest, smoothest, most compact, and the deepest coloured, is preferred. The taste is bitterish, and somewhat pungent. It smells strongly like a rose; and the wood, as well as the oil, is supposed to be sudorific.

Lignum serpentum. The wood of the ophioxy-lum serpentinum Lin. Sp. Pl. 1478.