The Sibley Guide to Trees

I've
always been fascinated by trees. They are, as David Sibley rightly
points out, the largest, heaviest and oldest living things on earth.
And, as a furniture maker, I especially appreciate the wonderful
array of wood that we get from trees. A world without trees would be
somewhat unimaginable. Apart from the houses that we live in and the
furniture that adorns our homes, trees give us food, paper products,
building materials, medicines and chemicals, not to mention beauty,
shade, oxygen, clean air and water.
The first thing to note is that this is more of a reference book
than a field guide. For a field guide I feel you're better off using
a local or regional guide, and something that's a little easier to
carry around than Sibley's hefty 427 page book.
There are two parts to this book. The first 30 pages provides a
general introduction to trees - what makes a tree not a shrub, how
they are classified (arranged into families, genus and species),
their distribution, and how to indentify them (by leaves, flowers,
fruit, twigs, buds, and bark). There are copious coloured
illustrations, and these are indeed wonderful. I found this
introduction to be very well written - it's not too long that you'll
feel benumbed, yet not so short that you don't get a good sense of
what the tree world is all about. Someone who is new to tree
watching will benefit most from this introduction. Unfortunately,
for those readers whose interest will be whetted, the author doesn't
provide any additional references (books, web sites).
The second part of the book is devoted to some "668 native and
commonly cultivated trees found in the temperate areas of North
America north of Mexico." The 'commonly cultivated trees' consist of
exotic (imported) trees that have escaped (thanks to birds and wind)
and are growing wild.

Sibley
divides the trees into their respective Families (52 of them), such
as the Pines, Laurels, Walnuts and Beeches. Within each Family there
may be several 'groups'; for example, the Pines are further divided
into ten groups, including the White Pine Group, Foxtail Pine Group,
Pinyon Group, and Yellow Pine Group. Individual trees are identified
by Common name, Genus and Species, and is Eastern White Pine, Pinus,
strobus. Sibley also provides alternative names that the trees may
be know by in specific regions of the country. So, somewhere in
North America the Eastern White Pine is also known as Whymouth Pine
or Pumpkin Pine (unfortunately Sibley doesn't tell us where these
names are used).
A short bit of text (30 to 50 words) accompanies each tree, along
with coloured illustrations of the leaves, fruit and bark, and the
tree's profile. There is also a small map that gives a very general
idea of areas in which the tree occurs. I find the real value here
in the illustrations, particularly as I do virtually all of my tree
watching in late spring to late fall months, with pockets stuffed
with leaves, flowers, pods and seeds. Once home, it's then out with
the reference books.
My main complaint with this book has to do with legibility. I find
the illustration labels barely decipherable - the font used is very
thin and small. Perhaps this has been done to help keep the book to
a manageable size. I also found the images of the bark (about 3/4"
square) much too small. Interspersed through the book are sidebars
that provide interesting information about specific trees. Again,
the font used for the text is quite small, and worse, shown on a
pale yellow background, making it, for me, that much more difficult
to read.
Still, minor complaints aside, if you love trees, then you'll want
to add the new Sibley Guide to Trees to your library.