Japan Flora: Annual, about 15 cm. high; stems somewhat fleshy, puberulent, sparsely branched at base; leaves ovate, 2.5- 5.5 cm. long, 1.5-2.8 cm. wide, very obtuse, broadly cuneate at base, 5-nerved, irregularly obtuse-toothed, loosely pilose on margin; flowers solitary, white, about 8 mm. long, in axils, the pedicels pilose, 3-10 mm. long, the bracteoles broadly lin­ear, 2.5 mm. long; calyx 5-parted to the base, the segments linear-lanceolate, pilose, slightly accrescent after antliesis, to 7 mm. long in fruit; corolla bilabiate; stamens 2, the filaments densely pilose, staminodes absent; capsules cordate, about 5 mm. long. Oct.

Found once in Honshu near Kyoto. N. America.