A Taxonomic Index to the works of
Norman C. Deno

Daily inquiries force me to access Mr. Deno's three books constantly.  The lack of a single alphabetic index for these works extends the search time more than is reasonable, given my schedule.  Once the species in question has been found, there is still the need to check the supplements for the latest germination test results.  I have developed this index for my own convenience.  It is not in its most useful form in this presentation, and I am willing to share the database with you; more on that later.


Seed trials on 4,123 species were conducted by Mr. Deno using a variety of experimental methodologies for the purpose of discovering the best method of destroying germination inhibitors in each case.  The results of these trials were published in the "Seed Germination Theory and Practice", 2nd Edition June 1993, and a first supplement to the "book", March 1996, followed by a second supplement in January, 1998.  Across the three volumes, those species were commented upon some 4,869 times in the chapters which list results.  This index was constructed solely from the entries in those chapters.

First, I entered the 4,869 species mentioned into a database which included a symbol for the volume in which it appeared, followed by the shortest possible characterization of the test results or the comment being made.  Second, I eliminated all duplications, while recording other volumes in which the species was mentioned, dropping all comment data other than the most recent comment which included germination results.  Finally, I searched my references in order to correct about 100 typographical errors in botanical names which had been made by the author or by myself in the digitizing process.

This is not a germination database:

First of all, that was never Mr. Deno's objective.  Second, the data presented in the comment field contains the least number of symbols needed to characterize the entry, giving preference at all times to a methodology with which there were successful results.  The whole story is in the books, not in the index.  Most notably, you have no way to know whether my choice of successful methodology was for fresh seed or for stored seed.  Second, when better methodologies were shown in the supplements, preconditioning requirements of the seed shown in earlier volumes may have been dropped if they were not mentioned in the most recent supplement.

The data:

The letter B indicates that test results were mentioned for that species in the 2nd Edition of the "book", and an attached subscript identifies a separate chapter, e.g., Bg for the chapter on grasses or Bo for the Chapter on Orchids.

The number 1 indicates that test results were mentioned for that species in the first supplement.  1c refers to the special chapter on Cactaceae.

The number 2 indicates that test results were mentioned for that species in the second supplement.  Again, 2c refers to the chapter on Cactaceae.

Symbols, codes, and acronyms used in the comment field are those shorthand letter and number abbreviations devised by Mr. Deno, and used uniformly throughout the three volumes.  A few were added by me, and their meaning will be immediately apparent.  These abbreviations are not going to be explained here. Remember that this is only a taxonomic index.  The three volumes cost only $50. including shipping, and present one of the best values in existence for your gardening library.

Seed Germination Theory and Practice:

This book is self published and self distributed.  The book is priced at $20 postpaid anywhere in the world. The First Supplement @ $15, and The Second Supplement @ $15 are also available postpaid.  Send all orders to:

Norman C. Deno, 139 Lenor Drive, State College, PA 16801  USA

Prepayment is required. Remittances should be sent by personal check drawn on a United States bank or a foreign bank with a U.S. affiliate.  Checks drawn on other banks cannot be accepted.  International money orders specifying payment in U.S. funds will be accepted, as well as cash, if you care to take the risk.

The three books differ from all past literature on seed germination in that they are based on studies employing the techniques used to investigate the mechanisms of chemical reactions.  This consists of precise control of variables, wide variation in these variables, and extensive use of rate measurements and chemical rate theory.  For nursery operators and gardeners who are growing plants from seed, these books are a must.

Usability of the Taxonomic Index:

Power users, like myself, who reference these books constantly will want to have the Taxonomic index in a single alphabetic file in database or spreadsheet format which shows each seed trial result as a separate record for each book, with the advantage of being able to go directly to the one volume which contains the information you seek. Find or search functions will even make such a file usable at high speed in any standard text editor.    You will receive the index in universal comma delimited format which is easily readable by text editors, database, and spreadsheet software by clicking on the download button.  The file is compressed for efficiency, so you will need Winzip or PKzip software for decompression before use.

After decompression, you will find a file in .csv format. This is a text format which can be read by text editors and most web browsers.  It will automatically convert to database or spreadsheet formats when opened by those types of software, and this type of format is much preferred for ease of use.  In some cases, you will have to add that file type to your operating system table of file types if you wish to open the files in your favorite text editor.  Field names (column headings) are as follows:

Botanical name, book, supplement #1, supplement #2, characterization of entry (germinable method)

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