Herbs annual, 10-40 cm, grayish green, appressed or spreading bristly. Stems branching from middle. Basal leaves few, oblong-elliptic, withering early; stem leaves linear-spatulate, 1-4 cm × 2-5 mm, long tapering at base. Inflorescences loose. Pedicel to 5-7 mm in fruit. Calyx lobes linear, small, 5-8 mm, elongated in fruit, wide, base triangular-deltate and cordate; midvein very thick, lateral veins prominent, forming a network. Corolla blue, very small, ca. 2.5 mm. Nutlets completely hidden in closed calyx, 3-4 mm, with dense tubercles minutely stellate at apex. Fl. Jun, fr. Jul.
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