Stachys albiflora N.E.Br.

A robust perennial herb, 0.6-1.3 m tall; stems stout, erect or ascending, branched above, densely glandular-pilose. Leaves very large, petiolate; blade rather thin-textured, broadly ovate, 80-110 x 50-75 mm, appressed-pilose, paler beneath and densely dotted with yellowish sessile glands, apex acute to subacute, base deeply cordate, margin finely and regularly crenate; petiole 20-40 mm long. Inflorescence simple or with a pair of branches near the base, tapering and denser towards the apex, of several spaced 6-flowered verticils; rhachis densely glandular-pubescent; bracts ovate, longer than the calyx. Calyx hispidulous and freely gland-dotted, 7 mm long; teeth distinctly spreading, 3 mm long, deltoid-subulate and markedly spine-tipped. Corolla white, tube 6-7 mm long; upper lip horizontal, 6 mm long; lower lip deflexed, 6 mm long.