Tree Classification

Term Explanation Example
Family Single or group of genera that closely or uniformly resemble each other in general appearance and technical character Aceraceae
Genus A group of tree species that have fundamental traits in common, but that differ in other, lesser characteristics Maple (Common Name)
Acer (Scientific Name)
Species A natural group of trees in the same genus made up of similar individuals Red Maple
Acer rubrum
Variety A subdivision of a species having a distinct, though often inconspicuous difference, and breeding true to that difference Acer rubrum var. drummondi
Cultivar A variety, selected for one or more outstanding characteristics, that is being cultivated, and usually reproduced by asexual means to preserve genetic makeup Acer rubrum 'Autumn Flame'
Superior Selection Also called superior trees, these are individual trees that display one or more notable, desirable traits.
Hybrid A tree that results from mating genetically unlike individuals. Such a cross can occur in nature or artificially.
Clone A tree derived vegetatively from one parent, thereby being genetically identical to the parent tree
Grafting and budding are also reproductive techniques used to develop clones, but complete genetic uniformity is not possible unless root stock is part of the parent material. Tissue Culture
(micro-propagation)
The genetic makeup of cultivars are preserved through asexual propagation methods Rooting
of Cuttings
Some cultivars are developed from native trees; others from exotics.