There is an estimated total of 1200 species of Piper in the pantropical and neotropical regions. Works on Philippine wild Piperaceae have been extensive. Candole (1910) reported 133 species of Piper and 26 of Peperomia; Merill (1923), 115 Piper, 25 Peperomia, and Quisumbing (1930), documented 87 Piper and 21 Peperomia.
Buyo-buyo is a dioecious vine, the branches smooth, terete and 1.5 to 3 mm in diameter. Leaves are membranous to chartaceoous, ovate, ovate-lanceolate, elliptic-oblong or rounded-elliptic, 4 to 14 cm long, 1.5 to 6.7 cm wide, usually 5-plinerved, rarely 3-plinerved or 7-plinerved. Pistillate spikes are abbreviated, oblong to globose-ovoid, 7 to 20 mm long, 7.5 to 11 mm in diameter, with the smooth peduncles 0.8 to 2 cm long. Rachis is hirsute. Bracts are sessile, peltate, the disc smooth, transversely subelliptic to obovate, 0.5 to 0.8 mm wide. Fruits are crowded, coalescing fully embedded in and concrescent with the rachis, oblanceolate to obovoid, about 3 mm long, angled, smooth and umbonate apex. Stigmas number 3 or 4, ovoid, sessile and apical. Seeds are obovoid, oblong-obovoid or oblanceolate, 2 to 2.5 mm long. Staminate spikes are slender, 2.2 to 5.7 cm long, 1.5 to 3 mm in diameter; the bracts subsessile, peltate, 0.5 to 0.6 mm long, disk transversly subelliptic, smooth, 0.5 to 0.6 mm wide. Stamens 2, pedicellate, 0.6 to 1 mm long; the anthers reniform to subglobose, 2-valved; the filaments slightly longer than the anthers, somewhat exserted.
In forests at low and medium altitudes throughout the Philippines.
Also occurs in Borneo and Java.
Fruits considered aromatic, stimulant and carminative.
Fruits are aromatic, stimulant and carminative.
In the Philippines, paste of leaves used externally to treat splenomegaly.
Fruits used for coughs and colds.
Used for flatulence.