Underground parts unknown, but assuredly as those of D. luzonensis. Plant glabrous. Stems, at least in the upper parts, unarmed, with very faint ridges. Bulbils none seen. Leaves on the larger stems opposed, but on the plant more often alternate than opposed, broadly cordate with evenly rounded auricles or angular auricles [var. sagitti-folia PRAIN & BURK. (1914)] to 12 by 12 cm, 7-9-nerved, acuminate; petiole about as long as the lamina. Male flowering axes 1-4 together in fascicles in leaf-axils, more or less erect, up to 6 cm long with about 60 flowers spaced so as to be in contact one with another; axis angled. Buds rather more elongated than globose, to 1½ mm long. Female flowering axes 1-2 together slightly angled. Capsule slightly retuse at the apex, more or less rounded at the base; wings 17 by 10 mm, nearly semicircular; stipe to 3 mm long.
Chiefly in the mountains of Luzon, ascending to 1300 m, where pine forests commence, growing there in thickets, but also found at sea-level in Golo Island off Mindoro and on limestone cliffs in the Pabellones Islands off Palawan.
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