These plants show heterostyly, making this definitely Nymphoides montana. Middle photos (grown out) show heterostyly: L-morph (stigma above anthers) then S-morph (stigma below anthers).
Nymphoides geminata does not show heterostyly. This is critical distinction (along with seed surface) between these two species whose distributions overlap in this region.
Otherwise, these two species are hard to visually separate.
Describe how you intend to use these images and/or audio files and your request will be sent to the author for consideration.
Your request has been successfully submitted to the author for consideration.
1,904,740 sightings of 21,313 species from 13,112 contributors CCA 3.0 | privacy
We acknowledge the Traditional Owners of this land and acknowledge their continuing connection to their culture. We pay our respects to their Elders past and present.