She is noted for research in aquatic botany, especially the Norfolk Broads and the Danube Delta as well as her creation of devotional landscapes.

[3] Pallis studied the plav, floating reed systems of the Danube Delta; writing a paper for the journal of the Linnaean Society in 1916.

She purchased the Long Gores property in 1935, planted specimens that she had acquired during her travel, and constructed a studio and garage.

Pallis created in Long Gores a devotional symbolic Greek landscape, featuring the Double Headed Eagle Pool, a pool with an island shaped in the form of a crowned, double-headed Byzantine eagle featuring the Papal Cross, the cross of the patriarch of Constantinople and her own Greek initials.

[1] She continued to write on Greek history and created pamphlets in the late 1950s and early 1960s concerning what she referred to as "philosophical biology".