Dubautia latifolia is a diffusely branched liana with slender, glabrous stems that can reach up to 8 meters or more long and occasionally up to 7 cm in diameter near the base. The leaves are simple, opposite, and widely spaced, with elliptic to oblong-elliptic blades measuring 8-17 cm long and 2.5-7 cm wide. They are conspicuously and finely reticulate with nearly isodiametric areola, glabrous, with entire or inconspicuously toothed margins at the apex. The leaves are very sparsely ciliolate and sparsely glandular, especially toward the base of young leaves. The apex is acute to acuminate, often inequilateral, and the base is rounded or cuneate, tapering to a well-defined petiole usually 0.4-0.6 cm long. The petiole is dilated at the insertion point, partly clasping the stem, and connate to the opposing petiole. The inflorescences are numerous, lax, or somewhat congested in pyramidal or oblong, decompound, paniculate arrangements measuring 15-45 cm long and 10-30 cm wide. The peduncles are densely dingy pubescent or subvelutinous, with the ultimate ones usually also glandular and 1-5 mm long. The receptacle is flat, with a false involucre consisting of a single series of usually 4-5 peripheral, strongly connate receptacular bracts 5-7 mm long that are densely dingy pubescent or subvelutinous and markedly glandular. There are usually 4-5 florets per head, with yellow corollas that are 4-5 mm long and eglandular. The pappus consists of usually 17-20 very narrowly linear bristles that are usually 5-6.5 mm long with conspicuous marginal cilia about 0.5 mm long. The fruit is a simple, dry achene (cypsela), usually 9 – 11 mm long (including the pappus) and moderately strigillose. It occurs on gentle to steep slopes with well-drained soil in semi-open, diverse montane mesic forests between 975 – 1,200 meters.