See Hermodactylus Folio Quadrangulo

Iris foetida, spatula foetida, xyris, gladiolus fixti. dus, spruge wort, stinking gladdon, or gladwyn; iris foetidissima Lin. Sp. Pl. 57; a wild species of iris, distinguished by a strong smell, found in hedges, etc.: its root is thick, and spreading in the earth, with many fibres, from which spring numerous leaves, longer, narrower, and sharper pointed than the common iris. The root is diuretic, but seldom noticed.

Iris palu 'stris, acorus adulterinus gladiolus luteus pseudo acorus, pseudo iris, butomus, butomon, yellow water flag; iris pseudacorus Lin. Sp. Pl. 56. It is common by the sides of rivulets and marshes; the roots are reddish; several flowers, of a yellow colour, stand on a stalk; the middle ribs of the leaves are prominent.

The roots of this species, when fresh, are more acrid, and strongly cathartic, than the former. Eighty drops of the expressed juice, repeated every two hours, have purged, when jalap, gamboge, and mercurials have failed. The root is without smell, but has an acrid styptic taste; its juice in the nose and mouth creates a burning heat, accompanied with a copious discharge, and is consequently considered as an errhine and sialo-goguc: from its astringency, it has been used in diarrhoea; for making ink, and dying black. To serpiginous eruptions, and scrofulous tumours, the expressed juice is said to be an advantageous application. Bergius observes, that, when fresh, it is a hydragogue; when dried, an astringent: but like the other species, it is too variable in its strength to be received into general use.