Philodendron myrmecophilum

Philodendron myrmecophilum is a climbing vine with a green apex that turns greyish-brown as the stem matures. The internodes are short, measuring 1–5 cm in length. The prophyll is triangular to narrowly triangular, measuring 17–20 cm in length and 2.5–3 cm in width, and is often green to greenish-cream or greenish-vinaceous in color. It frequently features vinaceous extrafloral nectaries. The leaves are large, with petioles 37–65 cm long and leaf blades 40–60 cm long by 25–38 cm wide. The leaf blade is ovate-sagittate with an acute apex and a sagittate to cordate base. The texture is chartaceous to subcoriaceous. The inflorescence consists of 1–3 per floral sympodium, with a peduncle 9–20 cm long. The spathe is boat-shaped, 14–21 cm long and 4–4.5 cm wide, with a green exterior marked by white grooves and a vinaceous base. The spadix is 12–13.5 cm long, with a male zone of 8–8.5 cm, a male sterile zone of 0.8–1 cm, and a female zone of 4–4.5 cm. The flowers include stamens 0.7–1.2 mm long and 0.4–1 mm wide, staminodes 1.2–2 mm long and 1–1.6 mm wide, and a gynoecium 2.8–3.5 mm long and 0.8–1.2 mm wide. The berries have not been observed.

Philodendron myrmecophilum is found in the Amazon Forest, predominantly in 'terra firme' forest areas. It grows as a hemi-epiphytic or terrestrial vine, often utilizing other plants for support. The species is adapted to the humid and shaded understory of the Amazonian rainforest, where it can climb trees or grow on the forest floor.

Cultivation of Philodendron myrmecophilum requires a warm and humid environment, similar to its native Amazonian habitat. It thrives in well-draining, nutrient-rich soil and benefits from high humidity and dappled to indirect light. As a hemi-epiphytic vine, it can be grown in a pot with a support structure or mounted on a tree fern or bark slab. Regular watering and occasional misting are necessary to maintain optimal growth. Fertilization with a balanced, water-soluble fertilizer during the growing season can promote healthy development.

Philodendron myrmecophilum is primarily of ornamental value due to its striking foliage and climbing habit. It is cultivated in botanical gardens and by plant enthusiasts for its aesthetic appeal. The presence of extrafloral nectaries suggests a potential ecological role in attracting ants or other insects, though specific uses in traditional medicine or other applications have not been documented.