Manulea annua (Hiern) Hilliard

Annual herb, stems erect or ascending, 30-300 mm long, solitary and simple at first, soon several-to many-stemmed and loosely branched from base, glandular-pubescent, hairs to c. 0.25 mm, moderately leafy at base of plant. Leaves opposite and decussate, bases connate, soon alternate upwards and passing imperceptibly into bracts, lowermost blades to 12-45 x 6-18 mm, lanceolate to elliptic in outline, tapering to a petiolar part 5-35 mm long (roughly 1/2-1/3 length of blade), smaller upwards and petioles relatively shorter, margins mostly deeply and irregularly toothed, sometimes almost pinnatipartite, occasionally only obscurely toothed or subentire, whole leaf glandular-pubescent. Flowers many in simple terminal racemes, usually solitary in each axil, occasionally paired, often ± crowded at first, soon distant. Bracts (lowermost) 4-22 x 0.5-4 mm, mostly leaflike, rapidly smaller upwards, linear to filiform, glandular-pubescent. Pedicels (lowermost) 4-20 mm long, shorter upwards. Calyx obscurely bilabiate, tube 0.2-0.5 mm long, anticous lobes 24 x 0.4-0.8 mm, posticous ones slightly smaller, oblong-lanceolate, glandular-pubescent with several-celled acute hairs to 0.4-0.6 mm as well. Corolla tube 4-5.5(-7) x 1-1.5 mm in throat, ± narrowly funnel-shaped, limb 4-8 mm across lateral lobes, posticous lobes 1.5-3 x 1.1-2.5 mm, anticous lobes 1.6-3.5 x 1-2.75 mm, all oblong-elliptic, obtuse, white, yellow patch down back of tube, tube glandular-puberulous outside plus eglandular hairs to 0.1-0.3 mm, glistening glands on backs of lobes, inside a short longitudinal posticous band of clavate hairs, often dark-coloured, running out onto base of posticous lip and encircling mouth, these hairs pale, c. 0.4-0.6 mm long. Stamens 4, anticous, anthers 0.35-0.5 mm, visible in mouth, posticous anthers 0.5-0.8 mm, posticous filaments dark-bearded. Stigma 3-6 mm long, well exserted. Style 0.75-1.3 mm. Ovary 1-1.7 x 0.6-1 mm. Capsules 2.5-4 x 2-3 mm. Seeds 0.4-0.5 x 0.3-0.4 mm, pallid.