This section is from the book "An Experimental History Of The Materia Medica", by William Lewis.
Prunella germanis Trag. Consolida media pratensis caerulea C. B. Ajuga reptans Linn, Bugle or middle consound: a low plant, with two kinds of stalks; round creeping ones, which strike root at the joints; and upright square ones, hairy on two of the opposite sides, alternately, from joint to joint, bearing loose spikes of blue labiated flowers, of which the upper lip is wanting: the leaves are somewhat oval, soft, slightly cut about the edges, and set in pairs at the joints. It is perennial, found wild in woods and moist meadows, and flowers in May.
The leaves of bugle discover, on first chewing, a sweetish taste, which is followed by a considerable bitterishness and roughishness. In-fusions of them, or the expressed juice, are recommended as vulneraries, or as mild astrin-gents and corroborants, in fluxes and other disorders. Some have observed, that they do not bind the belly, like the other consolidae, but that, on the contrary, decoctions of them are gently laxative, and of great use in phthises and internal ulcerations(a). The roots of the plant are considerably astringent, as appears both from their taste, and from their striking a black colour with solution of chalybeate vitriol.