Bonatea saundersioides (Kraenzl. & Schltr.) Cortesi

Erect, decumbent or scandent terrestrial herbs, 200-600 mm tall; tubers 1-8, spreading, elongate-oblong, tomentose. Stem slender to sturdy, 195-595 x 2.5-8.5 mm. Leaves sometimes withered at flowering, 5-12, lax, apiculate, margins entire, smooth, 54-193 x 7-28 mm. Inflorescence cylindrical, 65-262 x 52-95 mm, lax to dense, 5-41-flowered; bracts sometimes withered at flowering, similar to upper leaves, sheathing, ovate-lanceolate, apiculate, 17.5-30.5 x 4.0-8.5 mm. Flowers spreading, green and white, pedicel and ovary projecting forwards to sub-erect, 16-29 mm long. Dorsal sepal green, sub-erect, elliptical-oblong, galeate, acute to acuminate, 8.5-15.0 x 3.0-5.5 mm; lateral sepals green, patent, strongly deflexed, ovate-lanceolate, acuminate to apiculate, base oblique, margins weakly to strongly revolute with small acute tooth on lower margin, 10-15 x 3.5-6.5 mm, adnate to lip and stigmatic processes for 2.5-5.5 mm. Petals upper lobe green, erect, linear, acute to acuminate, 8-14 x 0.5-1.5 mm, adnate to dorsal sepal, lower lobe white, spreading horizontally, strongly deflexed, weakly to strongly falcate linear to linear-lanceolate, tip curved, acuminate to apiculate, (13-)16-24 x 0.5-2.0(-3.0) mm, adnate to claw of lip for 2.5-4.5 mm. Lip claw 4.5-9.0 mm, median lobe green, descending, geniculate, sometimes apically recurved, linear, acute, 8.5-20.0 x 0.5-1.5 mm, lateral lobes green to white, descending, diverging, weakly to strongly falcate, linear, tips curved, acuminate to apiculate, 14-34 x 0.5-2.0 mm; spur toothed, curved, 16-30 mm long, clavate apex 9.5-24.0 mm long. Anther erect, acute, 3.0-5.5 mm long, canals slender, 5.0-8.0 mm long. Stigmatic processes clavate, projecting forwards and deflexed, weakly divergent, 4.5-9.0 mm long, base adnate to lip. Rostellum 3-lobed, base auriculate, median lobe narrowly-cucullate, apiculate, margin ciliate, 4.0-6.5 mm long, lateral lobes linear, fused to anther canals, projecting forwards to sub-erect 45°, sub-parallel, 1.0-2.5 mm long. cauline, lower leaves intermediately basal, sheathing, lanceolate to narrowly-elliptical, acute to apiculate, margins entire, smooth, 54-193 x 7-28 mm. Inflorescence