Old Writings

In the interest of readability, this website does not in general cite references for individual items of information although the print document upon which it is based contains thousands of references and footnotes showing the sources of individual items of information and discussing the conflicting accounts in the many instances where sources do not agree.

The information required to produce this website has been gathered from a wide variety of public domain sources.

The following are books, documents and websites that have, to some degree, been consulted in compiling this site. Many other more specific sources are listed on the individual plant pages.

The following are institutions holding relevant documents that have been visited or contacted, and the help of whose staff is duly acknowledged.