suffruticose, decumbent, albo-tomentose; leaves petiolate, elliptic-oblong, obtuse, sub-cordate at base, crenulate, corrugated, and at first pubescent, but growing glabrous on the upper side, albo-tomentose with prominent nerves and veins on the lower; stipules membranous, broadly ovate, acute, cut; peduncles elongate, with incised bracts; calyx turbinate, woolly, semiquinquefid, with deltoid-acuminate lobes; petals twice as long as the calyx, stellato-pubescent, with a narrow cucullate claw, and ovate limb; ovary obovate, densely tomentose. Larger and more woody than M. betonicæfolia, with longer leaves and flower-stalks, longer and narrower petals, and more acuminate and more woolly calyx-lobes, but in other respects so similar that we suspect it is merely a very luxuriant variety, and retain the species chiefly in deference to the opinion of other botanists.
