Margaret Lilian Flockton (29 September 1861 Sussex – 12 August 1953 Sydney), is most commonly recognized as a botanical artist famous for her botanical illustrations of "The Forest Flora of New South Wales" (some 300 plates), "A Critical Revision of the Genus Eucalyptus", and the genus Opuntia, all by the botanist and forester, Joseph Henry Maiden.

After Flockton's training was completed, she quickly found work as a lithographer in Sydney with printers and publishers Gibbs Shallard & Co. and S.T.

Twelve of her lithographs depicting Australian wild flowers were used to promote the smoking of cigarettes as part of an intensive add campaign.

Flockton became a member of the Royal Art Society of NSW where she exhibited her watercolors and oil paintings from 1894 to 1901 alongside Sidney Long, Arthur Streeton, Tom Roberts, and other noteworthy artists.

One depicts the state's official floral emblem, the Waratah, and was bought by the NSW Royal Art Gallery.

A painting of two dead parrots done by Flockton was also included in the Australian Federation Album presented to the Duke and Duchess of York in 1901.

Near the time of her recognition, Joseph Maiden, the director of the botanic gardens, was founding the National Herbarium of New South Wales.

He was determined to make it a successful institution that collected, identified, documented, and stored both Australian and exotic plant life.

At that time Joseph Maiden, Director of the Botanic Gardens and Government Botanist, was greatly impressed by the standard of her work.

He considered her "the most accomplished botanical artist in New South Wales", and invited her to produce the illustrations for "A Critical Revision of the Genus Eucalyptus", which he was writing.

The University of Sydney has published the entirety of these works in the electronic book section of their library complete with Flockton's illustrations.

Her work is recognizable for her highly meticulous observation, perfect accuracy, and simple yet elegant pencil and brush strokes.

Many of her drawings survived but there are only a few of her colored works that remain today which are held in the Botanical Gardens in Sydney.

Flockton published various books of her own during her lifetime such as a small volume "Lichens" and "Australian Wildflowers" (1908) illustrated with her coloured lithographs.

She also produced the wildflower borders for butterfly studies in "Scenic Gems of Australia" by Dr Riches.

This was largely due to her work being closed off to the general public and only accessible within small scientific circles.

From the stories Wilson gathered in the biography she created, Flockton is presented as a brilliant, talented, yet reclusive woman.