河南鼠尾草 he nan shu wei cao

Herbs annual or biennial. Stems erect, 40-55 cm, densely glandular villous. Leaves simple or 3-foliolate; petiole 3-11 cm, sheathed at base; petiolules 1-4.3 cm, densely glandular villous; blades of simple leaves ovate, 5-7 × 4-5.5 cm, villous or pilose, ciliate, base cordate, margin coarsely serrate or crenate-serrate, apex acuminate to obtuse, terminal leaflet 5-10.5 × 4.5-8 cm. Inflorescences densely glandular villous; verticillasters 5-9-flowered, widely spaced, in terminal racemes or panicles; bracts lanceolate or spatulate, villous, glandular hairy. Pedicel 2-6 mm. Calyx tubular, 7-8 mm, glandular villous, throat white villous annulate; upper lip triangular, ca. 1.7 × 3.4 mm, margin entire or subentire, ciliate; lower lip larger than upper, teeth triangular. Corolla exserted, pubescent above middle; tube hairy annulate inside, 6-7 mm; upper lip oblong, ca. 4.7 mm; middle lobe of lower lip narrowed at base, apex enlarged, 2-lobulate, lobules fringed; lateral lobes ovate. Stamens exserted; filaments ca. 1 cm; connectives linear, ca. 1.4 cm, upper arms ca. 1 cm; lower anther cells undeveloped. Nutlets oblong-ellipsoid. Fl. May.

* Fields, wet open areas. Henan, Hubei.