Artocarpus altilis (Parkinson) Fosberg; A. incisus (Thunberg) Linnaeus f.; Radermachia incisa Thunberg; Sitodium altile Parkinson.

Trees 10-15 m tall, evergreen. Bark grayish brown, thick. Branchlets 0.5-1.5 cm thick. Stipules amplexicaul, lanceolate to broadly lanceolate, 10-25 cm, pubescence yellowish green, gray, or brown, hairs bent. Leaves spirally arranged; petiole 8-12 cm; leaf blade ovate to ovate-elliptic, 10-50 cm, thickly leathery, glabrous, abaxially pale green, adaxially dark green and shiny, margin entire, apex acuminate; secondary veins 10 on each side of midvein. Leaves on mature trees pinnately lobed or pinnatipartite; lobes or segments 3-8, lanceolate. Inflorescences axillary, solitary. Male inflorescences yellow, narrowly cylindric, narrowly ellipsoid, or clavate, 7-30(-40) cm. Male flowers: calyx tubular, apically 2-lobed, pubescent, lobes lanceolate; anthers elliptic. Female flowers: calyx tubular; ovary ovoid; style long, apically 2-branched. Fruiting syncarp green to yellow, brown to black when mature, obovoid to ± globose, 15-30 × 8-15 cm, tuberculate; pericarp soft; mesocarp of milky white fleshy calyx. Drupes ellipsoid to conic, ca. 2.5 cm in diam.

Plants known as breadfruit produce few or no seeds and are a staple item of the diet in some tropical parts of the world, most notably the Pacific Islands.

Cultivated;; Low elevations. Hainan, Taiwan [probably native to tropical Asia; now cultivated throughout the tropics].