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Large-fruit seatassel

Ruppia megacarpa

Also called Horse's Mane Weed

Large-fruit seatassel is a submerged aquatic herb in the genus Ruppia, growing in shallow brackish water along coasts. It needs salty or brackish, mostly submerged conditions to thrive.

Family
Ruppiaceae (Ruppi family)
Grows as
Aquatic, Bulb
Light
Full sun, Part shade
Water
Grows submerged in shallow brackish water; it is not watered in the usual sense.
Soil
Muddy or sandy sediment in shallow brackish water.
Native range
S. Russian Far East to W. Japan and E. China, S. & SE. Australia, New Zealand
Climate
subtropical

About

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). Isolated populations have been currently found in East Asia, including Japan, Korea, and Far East Russia, hence, the species distribution exhibit latitudinally disjunct (antitropical) distribution between East Asia and Australasia.

Where it grows

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

Other Ruppia plants

Ruppia bicarpa · Widgeongrass · Species code: Rp · Widgeonweed

Text excerpted from the Wikipedia article Ruppia megacarpa by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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