Plant epiphytic, rosulate. Roots densely branching around the stem and interlaced with organic material derived from rotting leaves. Internodes very reduced. LEAVES: Prophyll ca. 10 cm long, 5 cm wide, intensely wine-coloured. Sheath inconspicuous. Petiole 9-15 cm long, reaching 2.5 cm in diameter, flattened adaxially, rounded abaxially. Leaf blade 74-100 cm long, 13-20 cm wide, coriaceous, oblanceolate, subspathulate, obtuse, shortly cuspidate at the apex, base cuneate, narrowed ca. 5 cm wide, unequal; midrib 2-3 cm wide at the base, thickened, becoming narrow towards the apex; primary lateral veins 18-20 on both sides, secondary and tertiary veins numerous, not very developed, glands abundant. INFLORESCENCE: 1-2 per floral sympodium. Peduncle 13-28 cm long, 0.3-1.5 cm in diameter, wine-coloured. Spathe 7-15 cm long, reaching 10 cm wide when expanded, stout, coriaceous, oblong, convolute; tube 4-6 cm long, dark wine-coloured externally, internally glossy wine-coloured; blade 3-9 cm long, cream externally, internally glossy wine-coloured. Spadix 11.8 cm long, stipitate; stipe ca. 0.7 cm long; female zone 4.4 cm long, 2.2 cm in diameter, oblong-elliptic; intermediate sterile male zone 1.2 cm long, 1.5 cm in diameter, cylindric; fertile male zone 5.5 cm long, 1.5 cm in diameter, oblong-subcylindric, apex obtuse. Flowers: Stamens 4-5 per flower with a length of 2 mm, 1.5 mm wide, narrowed towards the base; staminodes 1.5 mm long, 1.25 mm wide; gynoecium: 3-3.5 mm long, prismatic; ovary ca. 3 mm long, 0.75 mm in diameter; locules 4-5 per ovary; ovules 4-6 per locule, hemianatropous; placentation axile, biseriate; style 0.5-0.75 mm long, 1 mm in diameter, prismatic, quadrangular, stigma ca. 1 mm wide, discoid. INFRUCTESCENCE: 5-6 cm long; berry 5-5.5 mm long, pink, narrowed towards the base; seed ca. 1.25 mm long, 0.4 mm in diameter.
This species is closest to Philodendron linnaei, differing principally in the leaf blade, displaying differentiated primary lateral veins, and by the colour of the spathe, displaying wine-colouration on both surfaces. Philodendron linnaei does not show distinct primary lateral veins, but rather has fine parallel veins when dry and a red spathe tube with the inner surface of the blade white.