The
type specimen were collected near
Posuso, Peru at an altitude of 600 meters.
Peperomia erythrostachya is a rather large,
glabrous, pendulous, epiphytic herb. The moderately slender
stem is 2–3 mm thick and, when dry, is a reddish-brown with a somewhat shiny surface. The alternate
leaves are ovate to elongated-ovate, acute to somewhat acuminate, with a rounded to subcordate base. They are quite large, 6–9 cm long and about 4 cm wide, and when dry are opaque, leathery, with multiple
pinnate nerves. The
petiole is 2.5–6 cm long or more. The
axillary spikes are long and slender, reaching 200 mm in length and 2 mm in thickness. They are dark red and densely flowered, borne on a 2 cm
peduncle that is bracteate in the middle. The round-peltate
bracts are relatively large. ==Taxonomy and naming==