Peperomia griseoargentea Yunck.

Erect herb to 20 cm tall. Leaves alternate, heart-shaped at base, thick; veins about 7, strongly raised to form a corrugated surface. Leaf stalk to about 6 cm long, rounded or with 2 grooves on inner face, attached less than 1 cm from the margin, green or pinkish. Flower spike unbranched. [p. hederaefolia Anon.]

Origin unknown

Similar to P. caperata from which it differs in having leaves with rounded (not 'V'-shaped) corrugations that are much wider than deep.

Source: Spencer, R. (1997). Piperaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 2. Flowering plants. Dicotyledons. Part 1. The identification of garden and cultivated plants. University of New South Wales Press.

kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Magnolianae
order      Piperales
family       Piperaceae
genus        Peperomia Ruiz & Pav.