A tree. From The Encyclopedia of Practical Horticulture A Reference System of Commercial Horticulture; Editor in Chief GRANVILLE LOWTHER; copyright 1914 (therefore in public domain); http://books.google.com/books?id=A6oMAAAAYAAJ&pg=PA137&img=1&zoom=3&hl=en&sig=ACfU3U3siAuTE5T4WTQ16ZEl2y8IHr8VwA&ci=133%2C353%2C369%2C247&edge=0
