BBC News
By Helen Briggs
image captionThe handwritten inscription reads Mrs Allen, La Botaniste
When sorting through books gathering dust in the attic, it s common to find mementos of the past such as a poem, a pressed-flower, or a letter.
But when staff at the Royal Horticultural Society (RHS) went through hundreds of old plant books, they stumbled on a collection of botanical treasures the likes of which they d never seen before.
Tucked inside a copy of The English Flora from 1830 were poems, doodles, plant specimens and a cartoon.
Judging by the contents, the owner was a keen plants woman. But her name, Isabella A Allen, appears to have slipped from history.