Philodendron crassinervium Lindl.

Stem repent and scandent, internodes 5-10 cm long, 1.5-2 cm thick. LEAVES: Petiole semiterete, 10-13 cm long, 5-8 mm thick, sheathed at the base for 2-3 cm; Blade linear-oblong, or lanceolate-oblong, apex cuspidate-acuminate for almost 1 cm, narrowly cuneate towards the base, 3-4.5 cm, rarely longer, 6-10 cm wide; midrib swollen, ca. 1 cm wide at the base, strongly attenuating towards the apex; lateral veins slender, subparallel, spreading, ascending and joining near the margin. INFLORESCENCES: Peduncle slender, 10-15 cm long, 3-4 mm thick. Spathe boat-shaped, apex shortly apiculate, tube 3-4 cm long, externally green, internally at the base light purple, green-coloured towards the spathe-blade; blade shortly stipitate; female zone 5-6 cm long, 1 cm thick. Pistils ovoid, ca. 2 mm long, 4-6-locular, locules many-ovulate. Male flowers usually triandrous. Berries turbinate [obconical], 4-5 mm long, 2 mm thick, white, stigma brown with 4-6 small lobes. Seeds oblong, pale.