Barclaya hirta is a species of aquatic plant native to Sumatra, Indonesia. It is disputed. By some, it is treated as synonym of Barclaya motleyi,[1] but by others it is regarded as a separate species.
Barclaya hirta is an aquatic plant with villous, stoloniferous, slim, 2–5 cm long, and 0.5–1 cm wide rhizomes. The 10-15 petiolate, rounded to ovate leaves with an obtuse apex are 5–10 cm long, and 4–8 cm wide. The petioles are 5–20 cm long. The leaves exhibit brownish pubescence.
The nocturnal, 4 cm wide flower is attached to a 5–20 cm long peduncle. The outer tepals are 2.5–3 cm long, and the 6-8 inner tepals are 2 cm long. The androecium consists of 30-40 stamens. The stigmatic cup has 7-9 carpellary appendages. Fruits were not observed.
The diploid chromosome count is 2n = 36.
It can reproduce vegetatively through the formation of stolons.
The flowers are likely nocturnal.
It was first described as Nymphaea hirta Kurz ex Teijsm. & Binn. by Wilhelm Sulpiz Kurz but validly published by Johannes Elias Teijsmann and Simon Binnendijk in 1864. Later, it was transferred to the genus Barclaya Wall. as Barclaya hirta (Kurz ex Teijsm. & Binn.) Miq. by Friedrich Anton Wilhelm Miquel in 1870.[2] [3]
The type specimen was collected by Johannes Elias Teijsmann in Sumatra, Indonesia.[4]
The status of this species is disputed. It is rejected by some, but accepted by others.[5]
The specific epithet hirta, from the Latin hirtus, means hairy.[6]
It is classified as data deficient (DD) under the IUCN criteria.
It occurs in small streams.