Lyperia antirrhinoides (L.F.) Hilliard

Annual herb more or less blackening on drying, main stem c. 25-300 mm tall, simple at first, later loosely branched from the base and above, lower branches decumbent or ascending, glandular-puberulous, hairs up to c. 0.25-0.3 mm long, scattered glistening glands also present, distantly leafy. Leaves opposite, c. 10-35 x 3-15 mm, elliptic tapering to a petiolar part accounting for up to c. 1/3 total leaf length, becoming nearly sessile upwards, apex obtuse to subacute, margins coarsely toothed, both surfaces hairy as stems. Flowers few to many in lax terminal racemes. Bracts alternate, leaf-like, lowermost c. 7-25 x 2-14 mm Pedicels (lowermost) c. 3-13 mm long. Calyx tube c. 0.2-0.3 mm long, lobes 3.5-5 x 0.8-1.2 mm, densely glandular-pubescent, hairs up to c. 0.6-1.2 mm long, scattered glistening glands as well. Corolla tube 14-18 x 1.2-1.4 mm, cylindric, expanded in throat to c. 2 mm, limb nearly regular, 6-10 mm across, lobes 2-4 x 1.3-2.5 mm, oblong-elliptic, tube and backs of lobes glandular-pubescent, hairs c. 0.4-0.5 mm long, glistening glands as well particularly on upper parts, upper surface of lobes glabrous except for broad band of minute glandular hairs around mouth, band of upward-pointing clavate hairs in throat, limb white to creamy-white with an orange-yellow, brown, purplish or black rounded patch at the base of each lobe. Stamens 2, filaments 0.6-1 mm long, anthers 0.8-1.5 mm long, either Included or just visible in mouth, staminodes 2, 0.2-0.3 mm long. Stigma c. 1-1.5 mm long, included. Style 10-15 mm long, glandular-puberulous. Ovary 2.5-3.5 x 1.4-2 mm, densely clad in glistening glands, hirsute as well with glandular hairs c. 0.2-0.5 mm long. Capsules 10-13 x 5.5-7 mm, hairy as ovaries. Seeds c. 0.8-1 x 0.6-0.75 mm.