Stems much branched, often forming close bunches or tufts, rarely over 25 cm. high. Leaves crowded, erect or ascending, hairy at least when young, flat at the base but subulate at the tip, 5-9 mm. long, usually with distant linear teeth, ciliate at the base, the midrib below broad and slightly prominent. Flowers on the main stem and on short branches, most commonly in pairs, less often solitary or in groups of 3 or 4. Bracts rather lax, usually hairy, lanceolate-acuminate, with slender distant pinnate teeth on the upper part, ciliate at the base, the cilia reversed. Calyx lobes longer than the bracts, hairy, distinctly connate at the base, ovate-acuminate, ciliate, either entire or with remote linear teeth. Corolla funnel-shaped, 2-2-5, rarely 3 cm. long, violet or violet-blue, with large dark spots on the tube between the lobes. Corolla lobes as wide as long, rounded at the tip, as long as or shorter than the tube. Filaments very shortly ciliate on the widened base. Disc fiat, glabrous. Style with a distinct lateral bulge below the stigma. Ovary hairy. Fruit 5-6 mm. long. Distant pinnate teeth on the upper part, ciliate at the base, the cilia reversed. Calyx lobes longer than the bracts, hairy, distinctly connate at the base, ovate-acuminate, ciliate, either entire or with remote linear teeth. Corolla funnel-shaped, 2-2-5, rarely 3 cm. long, violet or violet-blue, with large dark spots on the tube between the lobes. Corolla lobes as wide as long, rounded at the tip, as long as or shorter than the tube. Filaments very shortly ciliate on the widened base. Disc fiat, glabrous. Style with a distinct lateral bulge below the stigma. Ovary hairy. Fruit 5-6 mm. long.
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Shrublet to 30 cm. Leaves with axillary tufts, linear-pungent, finely ciliate, sparsely prickly toothed above; bracts larger, finely hairy. Flowers 1-4 at branch tips, blue with large spots between petals, 20-30 mm diam., calyx and ovary finely hairy.