Kadua cordata subsp. remyi is a scandent to weakly erect subshrub. The stems are terete to weakly quadrangular and range from 60 to 600 cm long. They are glabrous, usually conspicuously glaucous, and typically few-branched. The leaves are simple and opposite, with blades ranging from cordate to elliptic in shape and possessing entire margins. The stipules are deltate, usually carinate, and measure 3–9 mm long. They are slightly connate and adnate to the petioles, ending in a slender mucro 1–5 mm long. The flowers are bisexual (perfect) or pistillate and are insect-pollinated. The calyx lobes are typically foliaceous, oblong-ovate to broadly ovate, measuring 4–8 mm long and 1.5–2.5 mm wide, and they enlarge somewhat in fruit. The hypanthium is turbinate and 1.5–2.2 mm long. The corolla is salverform, fleshy, usually glaucous, and varies in color from pale green to greenish-yellow, greenish-white, or cream-colored (as in var. remyi), and is rarely tinged purple. The corolla tube is 9–17 mm long and may be slightly enlarged distally; the 2.5–7(–10) mm long lobes are strongly inflexed in bud and more or less revolute at anthesis. Stamens are inserted 1–3 mm below the corolla lobe sinuses. The ovary is inferior or partly so, 2- to sometimes 4-locular, with few to many ovules on fleshy placentas near the septum’s middle. Styles are cylindrical to filiform, woolly-villous in the lower third to two-thirds, with 2–4 lobes at the apex and bilobed or subcapitate stigmas, which may be included or exserted. The fruit is a capsule, turbinate to subglobose in shape, 2–4 mm long and 3–7 mm in diameter. The seeds are dark brown, irregularly cuneiform, irregularly angled, and have a darkly granular to reticulate–pitted surface. It is found on or near ridge crests in mesic, windswept shrublands between 730-900 meters.