Langka

Tree Height: 8 to 25 meters. Leaves: Leaves 4-25 x 2-12 cm, coriaceous, glossy, usually glabrous; top dark green, underside pale green; may be flat, wrinkled or with upcurled sides; arranged alternately on horizontal branches, and spirally on ascending branches with 2/5 phyllotaxis; broadest at or above the mid-portion; pinnately nerved, with 5-12 pairs of veins; those on flower-bearing branches obovate or oblong, those on young shoots oblong, narrow; entire when mature, 2 or 3 lobed when young; apex blunt, short and pointed; base cuneate or pointed; midrib and main veins greenish-white to pale greenish-yellow; at the nodes, stipules fused around stem, leaving an encircling scar after they fall off. Flowers: Individual flowers borne on an elongated axis and forming a racemoid inflorescence; male spikes produced singly, elongated, whitish-green or dark green with smooth skin, becoming yellowish and rough when mature, oblong, cylindrical, clavate, ellipsoidal or barrel shaped, distal end with a 1.5-2.5 mm wide annular ring, 3-10 x 1-5 cm, slightly hairy. Hanging or drooping peduncle 1.5-3.5 cm long and 4-5 mm thick, many densely crowded sterile or fertile flowers; sterile flower has a solid perianth and the fertile one is tubular and bi-lobed. Female spikes either solitary or paired, oblong or cylindrical with rough, light to dark green skin, 5-15 cm, peduncle 8-9 mm thick; base with 3-4 mm wide and green annulus. Fruits: A multiple fruit consisting of several achenes (syncarp), each of which is indehiscent and 1-seeded, cauliflorus, 20-100 x 15-50 cm, the entire fruit weighing 4.5-50 kg; oval, oblong or ellipsoid, pale or dark green when young, greenish-yellow, yellow or brownish when mature; peduncle green, 2-10 cm long, 1-3.5 cm thick, covered by a rubbery rind and hard pyramidal, pointed or blunt spines. Inside are the fruitlets, which are the true fruits, 4-11 x 2-4 cm, 6-53g, composed of fleshy aril and the seed; aril waxy, firm or soft, yellow, golden yellow to yellow-orange, sweet, aromatic, 2-6.5 x 0.1-0.7 mm, 5-42 g.