Sharman Apt Rusell that is.
An absolutely fascinating pair. The books were written with gorgeous, poetic prose and were packed with information; this is a rare and unusual combination--most authors can provide one or the other, but not both.
The books also made a great pair read back to back, since one had a longish section featuring plants from a butterfly's viewpoint and the other butterflies and caterpillars from a plant's view.
Full titles: An Obsession With Butterflies: Our Long Love Affair With A Singular Insect and Anatomy Of A Rose: Exploring The Secret Life Of Flowers.