Ficus elastica

Bark is gray, smooth or slightly roughened. Branchlets are greenish brown, glabrous. The stems exude white latex. Aerial roots are abundant. Leaf blades are oblong-elliptic, 9-30 × 5-12 cm, leathery, base rounded, apex short-acuminate, margins entire; surfaces abaxially and adaxially glabrous; midvein prominent, lateral veins parallel without secondary veins. Petiole 2.5-5 cm. Stipules large, 3-10 cm, enclosing the new developing leaf. Inflorescence is a syconium with many minute flowers inserted on inner wall of hollow receptacle that communicates with outside through an apical pore. There are male, sterile female and female flowers in each syconium. The whole inflorescence becomes a false fruit, in which the flowers and seeds grow together to form a single mass inside a closed receptacle. Syconiums are two per node, sessile, greenish yellow, oblong-ovoid, ca. 2 × 1.5 cm, glabrous; subtending bracts entirely enclosing young syconia. The mature ripened syconia are brownish red.