绵毛水苏 mian mao shui su

Herbs perennial, usually densely gray or white silky-lanate throughout. Stems erect, ca. 60 cm tall. Petiole semiamplexicaul; basal leaf blade oblong-elliptic, ca. 10 × 2.5 cm, base attenuate, margin crenulate, apex attenuate. Spikes 10-22 cm; verticillasters many flowered, contiguous except for lowest 1-3; floral leaves subsessile, minute, lower ones slightly longer than verticillasters, upper ones shorter; bracteoles linear to linear-lanceolate, ca. 6 mm. Flowers sessile. Calyx tubular-campanulate, slightly curved, ca. 1.2 cm, glabrous except for teeth on inside, 10-veined, accessory veins inconspicuous; teeth subequal or posterior teeth larger, ovate-triangular, 2-3 mm, apices rigid. Corolla ca. 1.2 cm, silky-lanate, base glabrous; tube ca. 6 mm; upper lip ovate, margin entire; lower lip subpatent, middle lobe broadly ovate, lateral lobes oblong. Filaments densely villous basal to middle. Style much exserted. Immature nutlets brown, oblong, glabrous. Fl. Jul.

Cultivated in China [SW Asia, Europe].

Used as an ornamental.