Peonies by Jane Fearnley Whittingstall. Harry N. Abrams. Penstemons by Robert Nold. A Comprehensive Guide for Gardeners, Horticulturists, and Botanists by Christopher Grey-Wilson. Precious Heritage is a hefty 400 pages.
Every page has valuable bits of information.
The World Wildlife Fund recently published a report that's more technical than Precious Heritage but equally ambitious in scope. A Comprehensive Guide for Gardeners, Horticulturists, and Botanists by Christopher Grey-Wilson, and for Penstemons by Robert Nold. A Photographer's Botanical by Christopher Baker, and Abrams for Peonies by Jane Fearnley Whittingstall. In Tulipa , Christopher Baker has created individual botanical portraits of 350 tulips. Baker's exquisite sensibility rivals that of the botanical illustrators of the 17th or 18th century who, according to the publisher, were his models.