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Fruit c. 6 mm. in diam.; nutlets c. 3.0 x 2.5 mm. (without glochids), ovate to subcircular in dorsal view, flattened, not marginate, outer surface flat or concave, densely glochidiate and with some minute glochids mixed with the others, glochids narrowly conical the largest ones up to 0.7 mm. long, on the margin; cicatrice c. 1 x 1 mm., deltoid.
Calyx 1.5–2.5 mm. long, campanulate, scabrous to hispid or sometimes subglabrous but always ± ciliate at margins, usually divided to near base; lobes irregular in size and in shape, ovate or triangular to obovate or even spatulate, acute to rounded at apex.
A tall herb; stem (or stems) ascending, strong, hollow at least when dry, much branched, angular and ± laterally compressed, dark brown, retrorsely hispid below and acroscopicaly appressed hispid to the apex; branches with indumentum similar to the stem.
Corolla glabrous, deep blue; tube 1.2–1.7 mm. long, cylindrical; lobes 1.3–1.5 x 1.4–1.9 mm., subcircular to obovate-spatulate, apex rounded, with undulate margins, spreading; fornices c. 0.5 x 0.7 mm., ± trapeziform, slightly bilobed.
Cymes ± lax, many-flowered, two at the ends of the branches, usually with a flower at the fork, the whole forming a large lax panicle.
Stamens inserted between 1/2 and the upper 3/4 of the tube; anthers c. 0.7 mm. long, elliptic; filaments c. 0.2 mm. long.
Pedicels 1.0–3.0(3.5) mm. long, not or little recurved in fruit.
Style c. 0 7 mm. long; stigma subcapitate.
Basal and lower leaves not seen.
