dendro-, dendr-, dendri-, -dendria, -dendrite, -dendritic, -dendra, -dendron

(Greek: trees, tree-like structures)

The forest is a peculiar organism of unlimited kindness and benevolence that makes no demands for its sustenance and extends generously the products of its life activity; it provides protection to all beings, offering shade even to the axeman who destroys it.

—Gautama Buddha, Founder of the Buddhist religion, circa 525 B.C.
dendrophilous (adjective), more dendrophilous, most dendrophilous
Regarding the preference for, or partiality for trees: Some orchids are dendrophilous and attach themselves to trees in order to grow.
dendrophobia (s) (noun), dendrophobias (pl)
An excessive fear of trees: Dendrophobia may be related to a terror that one might be injured or killed in a forest by falling branches of a fir or other conifers, or that a fir might fall over onto someone walking there.

Another dendrophobia can be caused by experiencing extensive damage to homes, cars, and property when tall perennial woody plants fall over during a storm.

dendrophysis
In mycology, a hypha or filament that branches out on trees; found in fungi belonging to the family Cyphellaceae.
epidendral
Growing on trees or existing on trees.
galactodendron
Literally, "milk tree" and generally known as a "cow tree".

A tree (Galactodendron utile or Brosimum Galactodendron) of South America, which when cut provides a "nourishing fluid" that is similar to milk.

lepidodendrid
A reference to one of an extinct family of trees allied to the modern club mosses, and including Lepidodendron and its allies.
lepidodendron
A genus of fossil trees of the Devonian and Carboniferous ages, having the exterior marked with scars, mostly in quincunx order, produced by the separation of the leafstalks.
lepidodentroid
Leucadendron
1. A genus of evergreen shrubs from the Cape of Good Hope, having handsome foliage. Leucadendron argenteum is the silverboom of the colonists.
2. A large genus of evergreen trees and shrubs having silvery white leaves and solitary terminal flowers with conspicuous silvery bracts.
lithodendron
Coral; so called from its resembling a petrified branch.
oligodendria
Tissue consisting of glial cells with sheet-like processes that form the myelin sheath of nerve fibers; also, oligodendroglia.
oligodendroglia (s) (noun), oligodendroglias (pl)
1. Neuroglia consisting of cells similar to but smaller than astrocytes, found in the central nervous system and associated with the formation of myelin.
2. A class of neuroglial (macroglial) cells in the central nervous system.
3. Etymology: from Greek, literally meaning, "few tree cells".

The important function of these cells is the formation of insulating myelin sheaths of axons in the central nervous system.

peridendritic
In medicine, surrounding the dendrites.
Phellodendron
Cork tree.
philodendrist (s) (noun), philodendrists (pl)
One who has a special fondness for trees: Since Jane was a little girl she was a philodendrist and her love of trees as an adult didn't subside. She planted many trees in her garden and went on long walks in the forest many times a month.