Localities documented in Tropicos sources
North Korea (Asia)
South Korea (Asia)
Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
- Flora of China Editorial Committee. 1988-2013. Fl. China Unpaginated. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis. http://www.tropicos.org/Reference/42480
- Flora of China Editorial Committee. 2010. Fl. China 23: 1–515. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis. http://www.tropicos.org/Reference/100001734
Habitat and Ecology
Zostera caulescens is believed to be the world's longest seagrass and was collected in lengths of up to seven m, with a typical length of 4.8 m in a bay of northeastern Japan. The flowering shoots are produced on a proliferation of vegetative leaves at the top of a stem. Flowering shoots take one year to mature and develop spadices, over-wintering in the bed.
Molecular Biology and Genetics
Barcode data: Zostera caulescens
Statistics of barcoding coverage: Zostera caulescens
Public Records: 3
Specimens with Barcodes: 3
Species With Barcodes: 1
IUCN Red List Assessment
Red List Category
Red List Criteria
Within its range in Japan there is industrial development in coastal regions, land reclamation, water pollution and disturbance of habitats by fish trawling. In South Korea there is a large amount of coastal eutrophication and some land reclamation.
Zostera caulescens is listed as Vulnerable (vulnerable stage) in the Red Data Book of threatened Japanese plant species (2000).
Further research on population and general biology of this species is recommended.