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

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.

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.

Coral; so called from its resembling a petrified branch.

Tissue consisting of glial cells with sheet-like processes that form the myelin sheath of nerve fibers; also, oligodendroglia.

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.

Oligodendroglia (from Greek, literally meaning, "few tree cells") may be called interfascicular, perivascular, or perineuronal satellite cells according to their location. The most important recognized function of these cells is the formation of the insulating myelin sheaths of axons in the central nervous system.

In medicine, surrounding the dendrites.

Cork tree.

One who has a special fondness for trees.

1. Any of various climbing tropical American plants of the genus Philodendron, many of which are cultivated as houseplants.
2. A climbing evergreen plant characterized by smooth, shiny, leaves; often grown as a houseplant; found in tropical America.
3. Via Modern Latin, from Greek, philodendros, "loving trees" because it climbs or twines around trees in its native habitat.

An evergreen shrub of the heath family that is native to southern Asia but is widely grown in temperate regions for its cluster of brightly colored flowers. Via Latin, "oleander", from Greek, rhodon, "rose" plus dendron, "tree".

1. One of the terminal branches into which the axon of a nerve cell divides.
2. One of many terminal arborizations into which the axon of a neuron branches; an axon ending.

It is not uncommon to find many telodendria assembled into a network, but in some instances axons are seen to branch into only one or two such terminal processes.

A nonvolatile irritant oil that is the active constituent of various plants (as poison ivy) of the genus Rhus.

1. In some classifications: comprising those members of the genus Rhus having foliage that is poisonous to the touch; of North America and northern South America.
2. An alternative genus for six species of poison ivies and poison oaks within the genus Rhus.
3. A genus (formerly rhus) of shrubs, vines, or trees that yields a highly allergenic oleoresin which causes a severe contact dermatitis.

The most toxic species are toxicodendron vernix (poison sumac), toxicodendron Diversilobum (poison oak), and toxicodendron Radicans (poison ivy). Toxicodendron Vernicifera yields a useful varnish from which certain enzymes (laccases) are obtained.

A tree is a perennial woody plant with three basic characteristics that distinguish it from all other plants.

1. Size: In maturity it is much bigger than all other plants.
2. Form: A typical tree has a single stem which bears branches at a distance above the ground.
3. Way of life: Under natural conditions trees grow in stands (forests) which dominate their area of land.

By the wood of their trunks, their fruits, and the special kind of environment they create, trees influence life on earth more than any other kind of plant.

—1001 Questions Answered about Trees by Rutherford Platt; Dodd, Mead & Company; New York; 1959.

A genus of fossil trees.