Monstera adansonii (friedrichsthalii) This clone I have had in my collection for years but it seems a few other clones are on the market now days that go by the same name. These clone that are slightly different. One I found from Thailand has more cordate (Heart Shaped) leaves and a bit of a sheen to them. The Monstera friedrichsthalii clone has a longer more narrow leaf. It can be difficult to tell them apart unless side by side. Over all the Monstera friedrichsthalii will grow leaves up to 2 feet long and 8 inches wide or wider.? The rounder clone seems to grow much smaller and is in tissue culture and a bit easier to find.
All photos are of the plant for sale.