New Zealand Map Grid:
2358840E 5730851N (WGS84 -43.614547 171.127058)
Habitat:
Tarn is about 400 x 150 m and Amphibromus fluitans has a cover of 1 in the mud zone, sometimes among scattered rocks. It is the largest population of four that I have seen in the Basin, reflecting the large area of a available habitat here.
Notes:
Note that the grid references are for the location of habitat, not the collected plants.