New Zealand Map Series 260:
R08 591 553 (WGS84 -36.191257 174.651664)
Latitude and Longitude (WGS84):
36°11.6´ S 174°39.1´ E (WGS84 -36.193333 174.651667)
Notes:
Aquatic plants section, MAF Ruakura. Depth ranges etc. Are relevant for this species in a particular lake rather than for this particular specimen.