New Zealand Map Series 260:
P28 892 686 (WGS84 -41.485601 173.948563)
Altitudes:
from 10m
Habitat:
Stream bank.
Notes:
Growing in a mat rooted to bank of creek. Spreading across & also upstream & downstream. Mat size = 1.5m x 3-4m. PID 97/138 19/8. Culms 58cm long; lvs up to 1.5cm wide.