Venetian Flower Seller - Blaas Eugen De
Water Lilies 43 - Claude Oscar Monet
Study of foliage, 1845 - John Ruskin
Rose Chinese - Georg Dionysius Ehret
Chrysanthemum Indicum from Pythanthoza Iconographica, published in Germany, 1737-45 - Johann Wilhelm Weinman
A Still Life Of Peaches, Plums, Currants And Hazelnuts On A Silver Platter, Strawberries In A Basket, Together With Grapes, Apples, A Melon, Peonies And Zinneas On A Stone Table Draped With A Cloth - (after) Jean-Baptiste Monnoyer
Still Life with Red and Pink Roses - Martin Johnson Heade
Cactus Flower - Charles Rennie Mackintosh
The Blossom Tree - Edward Atkinson Hornel
Nympheas 7 - Claude Oscar Monet
Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the 
