INTRODUCTION
The origin of this book is somewhat unusual and deserves a little bit of explanation.
In connection with my intended ecological study of various Surinam primates, all of which are fruit-eaters to a greater or lesser extent, I started to make drawings of fruits and seeds in 1973. This resulted in a collection of drawings with descriptions of fruits and seeds of representatives of a variety of plants families which I considered as a potential source of food for primates. In the course of this work it soon became clear that many plants could easily be identified to genus and often even to species using fruit characters only. Since good examples of a systematic investigation of fruits from a certain area are very hard to find in the botanical literature, it seemed well worth to expand the scope of my work in order to make it useful on a more general level.
This, in short, made me decide to compile a book on fruits from Suriname. In order to keep the size of the book within reasonable limits, however, it appeared to be desirable not to let the number of species grow too large. This has been achieved by including the woody plants only, with the exception of the small shrubs, leaving herbaceous plants out. Yet, even so, it took two years to finish the book. The material used is that which is being kept in the herbarium of the Institute for Plant Taxonomy of the University of Utrecht, consisting of both dried fruits and fruits in spirit.
Working with herbarium material, whether dried or pickled, has the disadvantage that in the course of the conservation process deformation to some extent may have occurred. This particularly applies to soft, juicy fruits like berries and drupes. Notably in the case of less common species, fruits of which may often be of rare occurrence in the herbarium, there remains the possibility that the material available does not adequately show the shape characteristic for the living plant. Moreover, it also regularly appears to happen that collectors hesitate to take the biggest fruits and often content themselves with the smallest specimens they can grasp.
This work does not aim to be complete and finished; many drawings and descriptions need to be compared yet with and checked against living material in the field, and may have to be considerably modified in their final version. This is one of the main reasons for not including a key in this book. Moreover, the book is likely to be used primarily as a picture-book by most people anyway, this often being the easiest and quickest method to identify a specimen at hand.
The pictures and descriptions are arranged in alphabetical order by family and within each family by genus and species. In many cases brief descriptions for family and genus are added. It has been felt that many descriptions would be more effective by including inflorescence and leaf characters as well, rather than being limited to the fruits and seeds only. In addition, there are always some notes added on plant habit, distribution and habitat of the species. The indications 'algemeen' (common), 'niet algemeen' (not common), or 'zeldzaam' (rare) are solely based on the number of herbarium collections. It should be borne in mind that a species referred to as rare could have acquired this predicate because it has been collected a few times only, whereas this species may appear to be far from uncommon in nature.
I would like to express my thanks to all who have assisted so very much in the realisation of this book, especially various staff members of the Institute for Plant Taxonomy in Utrecht. My special thanks go to Dr. P.J.M. Maas whose generous help and advice from the very beginning throughout has been a great stimulus to me. His involvedness with the project and his enthousiasm were prerequisites for this book's coming into existence. I am also much indebted to Drs. E.A. Mennega who has put himself in charge of the corrections, the preparing of an index, and who dealt with all technical problems connected with making a manuscript ready for the press.
The original drawings were made at life size. In order to give the book a handy format, all drawings have been reduced to half their original size, unless stated otherwise.
I hope that the "Surinaams Vruchtenboek" will prove to be useful, and I would like to invite anybody to send me his criticisms concerning the text and/or the pictures.
Drs. M.G.M. van Roosmalen
Institute for Systematic Botany
Transitorium II
Heidelberglaan 2, Utrecht – Nederland