New Zealand Map Series 1:
N65 809 448 (WGS84 -37.805279 175.301884)
New Zealand Map Series 260:
S14 129 749 (WGS84 -37.805445 175.302042)
Latitude and Longitude (WGS84):
37°48´ S 175°18´ E (WGS84 -37.8 175.3)
Abundance:
Abundant
Altitudes:
from 20m
Habitat:
In fine sandy mud with Elatine and Limosella just submerged but can be covered in 1-2m of water in Winter.
Resembles G. diadrum closely but flowers and fruit borne in axils of stem and pushed beneath plant as to ressemble Utriculum bladders. Very common and distinct from G. Diandrum.