Shrublet, stems c. 250-450 mm long, erect, ascending or decumbent, woody at base and there up to c. 4 mm diam., herbaceous above, well branched, densely pubescent, hairs up to 0.3-0.6 mm long, either all glandular or mixed with acute hairs, leafy throughout. Leaves opposite, bases connate, becoming alternate above as they pass imperceptibly into floral bracts, blade c. 7-27 x 5-16 mm, broadly elliptic or sometimes ovate, apex ± acute, base cuneate and passing into a petiolar part c. 3-16 mm long (roughly length of blade), margins coarsely serrate, doubly so in larger leaves, both surfaces pubescent, hairs up to 0.3-0.6 mm long, either all gland-tipped or mixed with few to many acute hairs. Flowers many in long lax delicate terminal thyrses, either solitary or in few-flowered (up to 11) dichasial cymules. Bracts (lowermost) always leaflike, c. 6-21 x 3-10 mm including the short petiole. Peduncle or pedicel (lowermost) c. 0.5-11 mm long. Calyx obscurely bilabiate, tube 0.1-0.3 mm long, anticous lobes 2-2.6 x 0.4-0.5 mm, posticous lobes 2-2.5 x 0.3-0.4 mm, lanceolate, pubescent all over, hairs up to 0.3-0.4 mm long, acute, small glandular hairs also present. Corolla tube 4.25-5.5 x 0.8-1 mm in throat, cylindric, inflated at apex, limb distinctly bilabiate, 6.8-7 mm across lateral lobes, posticous lobes 3-3.5 x 0.8-1.1 mm, anticous lobe 2.75-3.2 x 0.75-1 mm, all lanceolate, acute, margins revolute, yellow turning brown, yellow/orange patch in back of throat, pubescent outside, hairs up to 0.2 mm long, inside 4 longitudinal bands of clavate hairs in throat. Stamens 4, anticous anthers 0.3-0.5 mm long, tips just visible in mouth, posticous anthers 0.6-0.8 mm long, included, posticous filaments bearded. Stigma 1-1.5 mm long, longer than style, included. Style 0.2-0.8 mm long. Ovary 1-1.2 x 0.6-0.8 mm. Capsules 2.5-3.5 x 1.5-2.5 mm, glandular-puberulous. Seeds c. 0.5-0.6 x 0.3-0.4 mm, pallid.
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Densely hairy, erect shrublet to 45 cm. Leaves toothed. Flowers in lax, delicately arranged cymules, bilabiate, tube inflated above, lobes narrow, yellow with orange patch in back of throat, turning brown.