Poonah painting was a style popular in the 19th century in which “thick opaque color is applied without background and with scarcely any shading, to thin paper, producing flowers, birds, etc in imitation of Oriental work” (Websters dictionary, 1913). Below are some more descriptions of the style of painting. It also can describe velvet painting.
Deriving its name from Poonah, India, it was called so because the “poonah” brush was used it is also called Theorem painting.
The Young Ladies’ Journal Complete Guide to the Work-table: Containing, 1885
The young lady’s book: a manual of elegant recreations, exercises, and pursuits, 1829