Kiwano ( Cucumis metuliferus ) is a plant species in the Cucurbitaceae family. It is a vigorous, annual herbaceous plant with trailing or creeping stems and simple, solitary tendrils measuring 4–10.5 cm in length. The root system is robust and fibrous. The stems can reach several meters in length; they are grooved and covered in long, stiff, spreading hairs. The leaves are simple and arranged alternately. There are no stipules. The petioles are 3–12 cm long and setose (covered in stiff, bristle-like hairs). The leaf blades are ovate or pentagonal, measuring 3.5–14 cm by 3.5–13.5 cm, with 3–5 shallow, palmate lobes. The surface is covered in coarse hairs—particularly along the veins on the underside—and eventually develops a rough, speckled texture. The flowers are unisexual, symmetrical, and pentamerous (having parts in multiples of five). The sepals are filiform (thread-like) and 2–4 mm long. The petals are fused at the base, 0.5–1.5 cm long, and yellow in color. Male flowers appear ...
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