The research that has culminated in the pUblication being introduced . worldwide) save by one or two of this Manual was in the first place undertaken private conifer enthusiasts. My own efforts at 1 for a new edition of the book Manual of Cultivated recording data at Devizes made possible the Conifers by P. den Ouden and Dr B. K. Boom appearance in 1979 of a larger book: Manual of (both now deceased), published in 1965. Dwarf Conifers. That book was clearly in effect The claim in that book to have included every a partial up-dating of the den Ouden and Boom cultivar published since 1753 was not entirely book under revision, so the decision was made realised, and the stated objective, i. e. that the book to produce an entirely new work, with the present should serve as a basis for the international register title and with the following objectives. that was even at that date under consideration required a lot of space to be devoted to quite 1. To bring the taxonomy into line with current archaic information. practice. Each of the authors of the Manual of Cultivated 2. To extend the species descriptions and make them (by the use of side headings) more easy Conifers was well qualified for the task. P. den Ouden had been systematically collecting conifer to use. 3. To supply some form of 'keys'.

1. General Introduction.- The word 'conifer'.- The origin of conifers.- The morphology of conifers.- 2. The Uses and Value of Conifers.- Conifers in nature.- Using conifers.- A solitary specimen.- Hedges and shelter belts: woodland.- Dwarf conifers.- Alpine forms.- Seedling mutations.- Juvenile fixations.- Bud mutations.- Witches' brooms.- Cultivariants.- Using dwarf conifers.- 3. Choice of Species and Varieties.- Climatic zones and hardiness ratings.- Cultivation.- Soil preparation.- Purchase of plants.- The planting season.- Planting.- Aftercare.- Watering.- Pruning.- 5. Classification and Nomenclature.- Botanical classification.- Historical review.- Nomenclature of cultivated plants.- The codes of nomenclature.- Latin-form cultivar names.- Authorities.- Types and protologues.- The World Conifer Data Pool.- Conifer names registration.- Conifer Data Sheet.- 6. Identification.- Keys.- Guides to identification of species.- Varieties Currently Available.- Citation of 'authorities'.- Citation of Latin-form cultivar names.- Abies.- Acmopyle.- Actinostrobus.- Agathis.- Amentotaxus.- Araucaria.- Athrotaxis.- Austrocedrus.- Austrotaxus.- Callitris.- Calocedrus.- Cathaya.- Cedrus.- Cephalotaxus.- Chamaecyparis.- Cryptomeria.- Cunninghamia.- x Cupressocyparis.- Cupressus.- Dacrycarpus.- Dacrydium.- Decussocarpus.- Diselma.- Ephedra.- Fitzroya.- Fokienia.- Ginkgo.- Glyptostrobus.- Halocarpus.- Juniperus.- Keteleeria.- Larix.- Libocedrus.- Metasequoia.- Microbiota.- Microcachrys.- Microstrobus.- Papuacedrus.- Phyllocladus.- Index to Volume One.