Spanish Chestnut.
Horse chestnut is not so called because horses like the chestnuts, but because it has on the bark of its smaller branches small marks like horse-shoes with all the nails in them; and then get to know the general shape and appearance of each kind of tree, so as to be able to recognise it at a distance, and not only in summer, but also in winter.
The common trees in Great Britain which a scout should know by sight are:
Oak Poplar Holly Beech
Elm Pine Horse Birch
Plane Sycamore Chestnut Spanish
Cedar Larch Ash Chestnut
Fir Willow Lime Walnut
PLANTS.
But especially you ought to know which kinds of plants are useful to you in providing you with food. Supposing you were out in a jungle without any food, as very often happens; if you knew nothing about plants you would probably die of starvation, or of poisoning, from not knowing which fruit or roots were wholesome and which dangerous to eat.