Nymphoides spinulosperma, commonly known as marbled marshwort, is an aquatic plant of the family Menyanthaceae native to eastern Australia.

Nymphoides spinulosperma is a perennial herb with stems up to 1.5 cm (0.6 in) long.

The flowers appear in summer and autumn,[1] up to 5.5 cm across and bright yellow with fringed petals.

[2] It has been recorded from isolated waterways in Victoria, New South Wales and Queensland.

[1] Not often seen in cultivation, it is readily grown in ponds and aquatic gardens.