Lyperia formosa Hilliard

Annual herb scarcely blackening on drying, main stem c. 200-400 mm tall, simple at first, later loosely branched from the base and above, branches ascending, glandular-puberulous, hairs up to c. 0.3 mm long, very sparse glistening glands as well, leafy. Leaves opposite, c. 15-47 x 6-20 mm, elliptic tapering to a petiolar part up to 1/3 total leaf length, rapidly shorter upwards, apex ± obtuse, margins serrate, both surfaces hairy as stem. Flowers few to many in lax terminal racemes. Bracts alternate, leaf-like, lowermost c. 10-23 x 5-10 mm Pedicels (lowermost) c. 18-23 mm Calyx tube c. 0.2 mm long, lobes c. 4.2-5 x 1 mm, glandular-pubescent, hairs up to 0.5-1 mm long, sparse glistening glands as well. Corolla tube c. 24 x 1.4 mm, cylindric, expanded in throat to c. 2.8 mm, limb nearly regular, c. 14 mm across, lobes c. 5.2-6 x 4.2-5 mm, broadly and bluntly spathulate, tube and backs of lobes glandular-puberulous, hairs up to 0.4-0.5 mm long, very few glistening glands on upper part, upper surface of lobes glabrous except for a broad band of minute glandular hairs around mouth, band of upward-pointing clavate hairs in throat, limb white, base of each lobe with a broad orange patch 3-toothed at apex. Stamens 2, filaments 1.2 mm long, anthers c. 1.7 mm long, included, staminodes 2.0.3 mm long. Stigma c. 1-1.3 mm long, included. Style c. 20 mm long, glandular-puberulous. Ovary c. 3.5 x 2 mm, densely clad in glistening glands and glandular hairs c. 0.3-0.6 mm long. Capsule (young) c. 14 x 6 mm, hairy as ovary. Seeds immature. In full flower and young fruit near the end of August.