Last spring, while setting up photo-point monitoring sites in Canadian Forest, I noticed an unusual pea, without flowers, in a patch of remnant bush. It looked like a flat-pea but not Common Flat-pea Platylobium obtusangulum – the leaves were smaller and rounded. Research showed it was similar to Victorian Flat-pea Platylobium alternifera found in the Grampians.
In October 2014 I visited the site and collected a flowering specimen which I photographed and pressed. Still not sure of the correct identification. Roger Thomas found an article from Muelleria (a Victorian plant classification scientific journal) on the web about a revision of the genus Platylobium. The author of the article, Ian Thompson, had described several new species of Platylobium. I emailed photos of the Canadian plant to Ian and received a reply saying that the plant was Platylobium rotundum which has been given the common name Penny-leaf Flat-pea.
The prostrate plants were growing in a 20 m by 15 m area of Canadian Forest. The plants produce roots from nodes. Leaves are alternate along the stem. The flowers are mainly yellow with red markings, occurring 1 or 2 per axil on a pedicel 20-50 mm long. The calyx has sparse hairs. Few flowers produce seed. Occurs in open forest of central and central-west Victoria from Mt Buangor east to Blackwood.