Tree identification树木识别
Learn trees the way you meet them: the whole tree, a leaf, a flower, a fruit and the bark. Then go deeper with the Science Olympiad tree lists, identification keys, look-alike comparisons and conifer families.从整体、叶、花、果和树皮五个角度认识常见的树；再通过 Science Olympiad 树种清单、检索表、易混树种对比和针叶树分类进一步学习。
Common trees常见树列表
Each tree is shown six ways: the whole tree, a cartoon, the leaf, flower, fruit and bark. Pick one part to compare it across all trees, and click any picture to enlarge it.每种树都有六张图：整体、卡通、叶、花、果、树皮。选择一个部位可以横向比较所有树；点击任意图片可放大查看。
SciOly Forest Finds
The 33 species on the Division A list, each with appearance, location, uses and an ID video. Filter them with the identification keys (leaf shape, leaf arrangement, cones and fruits); look-alike comparisons appear right after the species they belong to. More forestry species follow below the list.Division A 名单上的 33 个树种，每种都有外观、分布、用途和识别视频。可以用检索表（叶形、叶序、球果与果实）筛选；易混树种的对比图紧跟在对应树种之后。名单之后还有更多林木树种的笔记。树种描述保留原文（英文）。
Identification keys按检索表分类
More forestry species更多林木树种
Forestry tree list (PDF) ↗Forestry 树种名单（PDF）↗Botany basics植物学基础
Reference figures for leaves, twigs, flowers and trunks (including the MADCap Horse mnemonic for trees with opposite branching), and how the conifers are classified.叶、枝条、花和树干的参考图（包括枝条对生树木的记忆口诀 MADCap Horse），以及针叶树的分类。
Conifer classification针叶树分类
How the conifers in this guide are related, from division down to genus and species. Links jump to their photos.本指南中针叶树的分类关系，从门到属和种。点击链接可跳转到对应照片。
Tree maps城市树木地图
Cities that map every street tree.这些城市把街道上的每一棵树都标在了地图上。