Source: Standard literature
Kaḷas-daṉgaya is a Sinhalese term for a decorative motif that consists of a mesh-like pattern with floral elements.1
It is also called koḷa vẹla which literally means "leafy branch"
Right: On a patisthānaya sold here in 2019.
Left: From a lacquered spear shaft in the Colombo museum.
Article: Sinhalese lacquer work
1. See Ananda K. Coomaraswamy; Medieaval Sinhalese Art, Pantheon Books, New York, Second Edition of the 1908 original, 1956. Page 216-217.