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Annual or perennial herbs up to 65 cm. tall, erect or ascending; stems 1-several arising from woody rootstock, simple or branched near or towards base, or occasionally within inflorescence, long pilose to hispid-pilose, frequently intermixed with shorter appressed hairs, sparsely leafy above with long internodes up to 8(11) cm. long.
Calyx 6.5–9 mm. long, obscurely to prominently 10-nerved, densely to subdensely patent hispid-pilose, 5-lobed, frequently with adaxial lobe much reduced, even causing calyx to appear 4-lobed;lobes (0.5)2–4 mm. long, narrowly triangular to subulate, broadly divergent especially at fruiting, calycal sinus not present.
Spikes terminal, 10–50 mm. long at flowering, up to 90( 180) mm. long in fruit, up to 15 mm. wide, cylindrical, compact with lower flowers occasionally becoming remote at fruiting, obscurely quadrangular.
Corolla blue, mauve, purple or white; tube 7–8.5 mm. long, slighdy densely pilose without, throat pilose; limb (7)10–13(17.5) mm. in diam.; lobes 2.5–6 x 2–3.5 mm., oblong to obovate, unequal.
Capsule 4.8–5.5 x 2.5–3 mm., cylindrical to broadly cylindric oblong-ovoid, apex truncate, shortly rostrate, c. 0.5 mm. long.
Bracts 4–7.5 x 1.2–1.5(2) mm., hispid-pilose, lanceolate.
Bracteoles 2.5–5 x 0.3–0.5 mm., linear, hispid-ciliate.
