Barclaya rotundifolia

Barclaya rotundifolia is a species of perennial aquatic plant native peninsular Malaysia, and Borneo.

Vegetative characteristics
Barclaya rotundifolia is an aquatic plant with stoloniferous, short, and thick rhizomes. The stolons are 2 mm wide. The green, rounded leaves are 4-7 cm wide.

Generative characteristics
The nocturnal, 5 cm wide flowers are attached to 5-10 cm long peduncles. The flowers have 30-50 anthers. The gynoecium consists of 10-12 carpels. The globose, 1 cm wide fruit bears echinate, brown, ellipsoid, 2 mm long seeds.

Cytology
The diploid chromosome count is 2n= 36.

Vegetative reproduction
It can reproduce vegetatively through the formation of stolons.

Publication
It was first described by Mitsuru Hotta in 1966.

Type specimen
The type specimen was collected by Mitsuru Hotta in Sungai Beangang, Bintulu, Sarawak, Malaysia, on the 23rd of November 1963.

Etymology
The specific epithet rotundifolia, from the Latin rotundus and folium, means round-leaved.

Conservation
It is classified as data deficient (DD).

Habitat
It occurs in streams, and pools beneath tropical forest. It can grow in a submerged or emerged state.