I acquired these little chaps a few years ago. They flowered for a couple of years then 'disappeared'. Some weeds came up but as I pulled the first one I noticed a small tuber on the end (ooooops).Left to their own devices they continued to send up the weed type growth. This spring I decided to repot and the results aren't too bad.
There should also be a few Pterostylis obtusa mixed in with these, fingers crossed.