Peperomia obex is a species of terrestrial or epiphytic herb in the genus Peperomia that is native to Peru. It grows on wet tropical biomes. Its conservation status is Threatened.
The type specimen were collected at Muña, Peru.
Peperomia obex is a rather large, more or less branched, stoloniferous-ascending, glabrous herb with a stem 2âÂÂ3 mm thick, sometimes becoming very thick toward the base. The alternate leaves are lanceolate-ovate, acuminate, with an acute base, measuring 3âÂÂ5 cm long and 1.5âÂÂ2 cm wide. They are 5-nerved and dotted with black glands, and when dry are thin and purplish. The petiole is 5âÂÂ10 mm long. The spikes are terminal and from the upper axils, 25 mm long, and shortly pedunculate.
It was described in 1936 by William Trelease in ', from specimens collected by James Francis Macbride.
The epithet obex is Latin for "barrier" or "obstacle," possibly referring to some feature that confused identification.
It is native to Peru. It grows as a terrestrial or epiphytic herb. It grows on wet tropical biomes.
This species is assessed as Threatened, in a preliminary report.