About Aristolochia praevenosa F.Muell.
Aristolochia praevenosa grows as a large woody vine, distinguished by dense brown hairs covering its leaf stems, shoots, and flowering parts. Its leaves range in shape from ovate to elliptic, measuring 7 to 25 cm (3–10 in) long and 2.5 to 8 cm (1–3.4 in) wide. The base of each leaf is either heart-shaped or rounded. The upper leaf surface is a dull dark green, while the lower surface is hairy, especially along the leaf veins. Leaf stems are 1 to 3 cm (0.4–1.2 in) long, thick, and twisted. Two to six tubular flowers grow in racemes during summer and autumn. The flowers are 2.5 cm (1 in) long, purple or pinkish externally with a bright yellow interior. Flower stems mostly emerge from the leaf axils. The fruit is an orange, ribbed capsule, oblong or oval in shape, and 2 to 4 cm (0.8–1.6 in) long. The flowers of Aristolochia praevenosa are pollinated by small flies, which may belong to the family Phoridae.
