Ruppia megacarpa

Ruppia megacarpa is a submerged herb species in the genus Ruppia found in shallow brackish waters. It is a common on Australasian coasts, including Australia (NSW; SA; Vic; WA and New Zealand (type locality).^[2] Isolated populations have been currently found in East Asia, including Japan, Korea, and Far East Russia,^[3][4] hence, the species distribution exhibit latitudinally disjunct (antitropical) distribution between East Asia and Australasia.

Ruppia megacarpa
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Alismatales
Family:	Ruppiaceae
Genus:	Ruppia
Species:	R. megacarpa
Binomial name
Ruppia megacarpa R.Mason

Ecology

This species is known to have hybridized with 'Occidentalis' of the R. maritima complex in Hokkaido, Japan.^[3]