### (graph theory, computer science, discrete mathematics:)

A connected (undirected!) graph with no cycles. A finite tree on n vertices has exactly n-1 edges.

In computer science, trees are often in fact rooted trees. (In the finite case, this is the same thing as being a directed tree; however infinite trees can be directed without having a root.)

Trees are divided into two main categories: deciduous and coniferous. Forests are usually categorized as one or the other, or as a mix between the two.

Almost 50% of the biomass of a tree lies in the root system below ground. Here the roots, in symbiosis with various benign fungal growths, exchange carbon dioxide for soil-based nutrients such as nitrogen.

# KANJI: BOKU MOKU (tree, wood)

#### ASCII Art Representation:

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```

#### Character Etymology:

A pictograph of a tree with sweeping branches.

#### A Listing of All On-Yomi and Kun-Yomi Readings:

on-yomi: BOKU MOKU
kun-yomi: ki ko-

Nanori: gu mo moto

#### English Definitions:

1. BOKU: tree.
2. MOKU: tree; Thursday.
3. ki, ko: tree; wood; timber; lumber; wooden clappers.

New Nelson: 2531
Henshall: 69

#### Unicode Encoded Compound Examples:

(bokutou): wooden sword.
(mokuba): rocking horse.

Is a band local to the Boston and Worcester areas, formed back in 1990. Comprised of River on vocals, Jake on bass, Billy on drums and Ooze on guitar, Tree plays a mixture of punk, hardcore, groove and rock, which provides a solid foundation for their radical lyrics (kinda like RATM).

### Discography

Tree's official webpage is at www.treemusic.com. Most of this information came from there.

#### Everything2 tree write-ups

This will be an on-going project.

I am trying to compile a list of trees contributed by noders. There must be hundreds of them, so /msg BlueDragon if you find or write any and I'll add them to the list.

A whole lot of these need rescuing, so please be inspired!

#### A

Acacia
Acer, Japanese maple
Agnus castus, Chaste tree
Alder
Almond
Apple tree
Apricot
Arbutus
Ash
Aspen
Atlas Cedar Tree

#### B

Bay tree
Balsa
Baobab
Bayberry
Banyan
Beam tree
Beech
Birch
Blue spruce
Brazil nut, para nut
Bo tree
Box tree
Bristlecone pine
Bull's horn acacia
Bunya pine

#### C

Candle nut
Candleberry tree
Cannonball tree
Cashew
Cedar
Cedar of Lebanon
Cherry Tree
Chestnut
Cinchona
Citron
Coconut
Coolibah tree
Cottonwood
Cow tree
Christmas tree
Cinnamon
Colorado Blue Spruce, aka silver spruce,
Cork tree
Creosote Bush
Cypress

Damson
Date palm
Dogwood
Douglas-Fir
Durian

#### E

Elderberry, aka Elder, Black Elder, Common Elder, Pipe Tree, Bore Tree, Bour Tree
elm
Empress of China
Eucalyptus, aka coolibah tree, gum tree

#### F

Fir tree
Fig
Flame tree Fusanum, aka Fusora

Garry oak
Grapefruit
Grass Tree
Ginkgo biloba
Gum tree

#### H

Hazel
Hep tree
Hickory
Holm Oak
Horse Chestnut Tree, aka Conker tree
Hawthorn
Hemlock
Holly
Hevea Brasiliensis

#### I

Ironwood, aka ironbark tree

#### J

Jagua palm
Japanese fern tree
Joshua Tree
Judas tree
Juniper
Jupati palm

Kola nut

Laburnum
Larch
Laurel
Lemon
Lilac
Lime
Linden
Live oak
Locust tree

#### M

Macadamia nut, aka Queensland nut
Magnolia
Mahogany
Mahwa tree
Mango
Mangrove
Maple
Monkey puzzle tree
Morus, Mulberry
Mountain ash

Neem tree
Norwegian pine
Nutmeg
Nux vomica

Olive
Oak
Orange

#### P

Palm tree
Palo verde
Papaya
Peach
Pear
Pecan
Peepul tree, Pippul tree, Pipal tree
Persimmon, Sharon fruit
Pistachio
Plane tree, Platanus
Plum
Pomelo
Ponderosa Pine
Poplar, Cottonwood, Aspen

Quaking Aspen

#### R

Radiata pine, aka insignis pine, Monterey pine, Cambria pine, Guadalupe Island pine, Cedros Island pine
Raintree
Rosewood
Rowan aka Quickbeam, Mountain ash
Rubber tree

Sandalwood
Sapodilla
Sequoia
Shea tree
Shittah tree
Silk floss tree
Scots Pine
Soapberry tree
Spindle tree
Spruce
Stinkwood
Sweet Chestnut
Sycamore

Tamarisk
Tea tree
Teak
Tree of Heaven
Trident Maple
Tulip Poplar
Tupelo

#### U,V,W

Walnut
Whistling Thorn Acacia
White oak
Whitethorn
Wild service tree
Willow
Witch-hazel
Wollemi pine

#### X,Y,Z

Yew
Yucca

A very convenient DOS command for listing directories in a tree format. Ported to UNIX and other operating systems, and available under the various flavors of Windows. Very convenient for making data CD paper maps.

The command has two options

• /A - Specifies that alternative characters (plus signs, hyphens, and vertical bars) be used to draw the tree diagram. Very convenient for taking tree displays out of the DOS planet.
• /F - Displays the names of the files found within each directory listed.
syntax is tree an optional path indication /a /f : if you omit the path indication, tree will start from the current directory.

Example: the tree /a /f listing of a VCD

```Volume serial number is 0006FE80 FDE3:3A23
D:.
+---CDI
|       CDI_IMAG.RTF
|       CDI_TEXT.FNT
|       CDI_VCD.APP
|       CDI_VCD.CFG
|
+---EXT
|       LOT_X.VCD
|       PSD_X.VCD
|       SCANDATA.DAT
|
+---MPEGAV
|       AVSEQ01.DAT
|
+---SEGMENT
\---VCD
ENTRIES.VCD
INFO.VCD
LOT.VCD
PSD.VCD
```

The form of a tree is a phenotype that certain plants take on. Trees are not a single family of botanical lifeforms, but are rather an example of convergent evoloution, where many widely different types of plants have evolved the same basic shape for different reasons. Because of this, "tree" is basically a useless term as a biological classifier, since a fifteen meter tall Black Cherry tree is much more biologically related to a tiny strawberry plant then it is to a phenotypically similiar tree, such as an Alder. Trees can be both gymnosperms and angiosperms, and amongst the angiosperms, trees are almost always dicots, plants characterized by net-like venation, two seed leafs at germation and a generally more complicated structure.

The definition of tree given Webster 1913 is fairly accurate :

Any perennial woody plant of considerable size (usually over twenty feet high) and growing with a single trunk
although there are certain exceptions to these rules. For example, palm trees are not actually trees, since they do not produce true wood. A birch tree is definitely a tree, yet they commonly will have two or three main trunks coming from the same root system. The largest problem is with the size qualification. Quite often, whether a given seed grows into a "tree" or a "shrub" is a matter of chance. Two identical seeds may grow into a large, single trunked tree in one location, and into a low, shrubby bush in another location. Thus, even within a species, or even within genetically identical specimens, the term "tree" does not mean much more then a collection of possible traits.

Tree (?), n. [OE. tree, tre, treo, AS. treo, treow, tree, wood; akin to OFries. tr, OS. treo, trio, Icel. tr, Dan. trae, Sw. tra, trad, Goth. triu, Russ. drevo, W. derw an oak, Ir. darag, darog, Gr. a tree, oak, a beam, spear shaft, spear, Skr. dru tree, wood, daru wood. , . Cf. Dryad, Germander, Tar, n., Trough.]

1. Bot.

Any perennial woody plant of considerable size (usually over twenty feet high) and growing with a single trunk.

The kind of tree referred to, in any particular case, is often indicated by a modifying word; as forest tree, fruit tree, palm tree, apple tree, pear tree, etc.

2.

Something constructed in the form of, or considered as resembling, a tree, consisting of a stem, or stock, and branches; as, a genealogical tree.

3.

A piece of timber, or something commonly made of timber; -- used in composition, as in axletree, boottree, chesstree, crosstree, whiffletree, and the like.

4.

A cross or gallows; as Tyburn tree.

[Jesus] whom they slew and hanged on a tree. Acts x. 39.

5.

Wood; timber.

[Obs.]

Chaucer.

In a great house ben not only vessels of gold and of silver but also of tree and of earth. Wyclif (2 Tim. ii. 20).

6. Chem.

A mass of crystals, aggregated in arborescent forms, obtained by precipitation of a metal from solution. See Lead tree, under Lead.

Tree (?), v. t. [imp. & p. p. Treed (?); p. pr. & vb. n. Treeing.]

1.

To drive to a tree; to cause to ascend a tree; as, a dog trees a squirrel.

J. Burroughs.

2.

To place upon a tree; to fit with a tree; to stretch upon a tree; as, to tree a boot. See Tree, n., 3.

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