• 
Citrus aurantium by Georgio Angiolini (illustration painted c.1822-1830)
• 
Bengale Thé hyménée by Pierre Joseph Redouté (1759-1840)
• 
Tab XVI by Ernst Benary (1819-1893)
• 
Pear shaped Quince by William Hooker (1779-1832)
• 
Paeonia Russii var. Reverchoni by Lilian Snelling (1879-1972)
• 
Tulipa 'The Claude', Tulipa 'Duke of Sutherland' by Caroline Maria Applebee (c.1799-1854)
• 
The Royal Horticultural Society (RHS) has a lovely new postcard set out, featuring exquisite botanical artwork from the collections of the RHS Lindley Library. Each set contains 32 postcards — 2 each of 16 illustrations. Gorgeous. You can purchase them here.