TREE - The Law Mind Legal Dictionary

TREEAuthored

The Law Mind • 1220 words

Definition

A tree is a perennial woody plant with a trunk and branches. In law, trees are treated primarily as real property incidents — that is, as components of land — with distinct legal consequences that follow from whether they remain rooted or have been severed. Two distinct bodies of doctrine govern trees: (1) property law, which addresses ownership, encroachment, and the status of trees as realty or personalty; and (2) criminal procedure, where "tree" appears in the metaphorical phrase "fruit of the poisonous tree," describing evidence derived from an unconstitutional search or seizure.

Trees as Real Property. A tree growing in the ground is part of the freehold — it is real property belonging to the landowner and passes with a conveyance of the land. The maxim captured in Anderson's — solo cedit quod solo implantatur ("with the land goes whatever is planted in the soil") — supplies the governing principle. Once a tree is severed from the land, it becomes personal property immediately, regardless of who cut it.

Boundary Trees. A tree whose trunk stands on the boundary line between two parcels is generally treated as the common property of both landowners, neither of whom may destroy it without the other's consent.

Encroaching Trees. Overhanging branches and encroaching roots that cross a property line constitute a nuisance at common law. The affected neighbor may cut back the encroachment to the property line but generally may not enter the neighbor's land, cut down the tree, or claim the severed wood as compensation.

Fruit of the Poisonous Tree. In constitutional criminal procedure, the "poisonous tree" is an unlawful governmental act (typically an illegal search, seizure, or interrogation). The "fruit" is any evidence — physical, testimonial, or derivative — obtained as a result. Both the primary evidence and its fruit are subject to suppression under the exclusionary rule.

Common Language

Modern common usage (Wiktionary): A perennial woody plant taller and larger than a shrub, with a wooden trunk and, at some distance from the ground, having leaves and branches.

Historical common usage (Webster's 1913): Any perennial woody plant of considerable size (usually over twenty feet high) and growing with a single trunk.

The common definition describes trees by size and form. Legal doctrine is indifferent to size — Bouvier notes that a tree "may be young or old, small or great" — because what matters is whether the plant is a permanent, rooted, woody growth attached to the freehold. A sapling one foot tall is legally a tree for property purposes; a large potted shrub is not.

Common Confusion

"Fruit of the poisonous tree" is frequently confused with the underlying exclusionary rule itself. The exclusionary rule suppresses the directly obtained unconstitutional evidence (the "poisonous tree"). The fruit-of-the-poisonous-tree doctrine extends suppression to secondary evidence derived from that primary illegality. The two doctrines operate together but are analytically distinct, and exceptions — independent source, inevitable discovery, attenuation — apply differently to each.

Tree (property) and timber are related but not interchangeable. Timber typically refers to trees valued for their wood as a commercial commodity, and "timber rights" can be severed from surface ownership. An ordinary ornamental or shade tree on residential land is a tree in the property sense but may not qualify as timber under a deed or contract that conveys only timber rights.

Recognized Forms

/SUBTYPES

Boundary tree: A tree straddling the line between two properties; treated as tenancy in common between adjoining owners under most American authority.

Ornamental or shade tree: Trees valued for aesthetic or environmental purposes rather than lumber; relevant to damages calculations in trespass and nuisance cases, where jurisdictions diverge on whether market value or replacement cost is the proper measure.

Timber: Trees of merchantable value for wood products; subject to separate conveyance, severance, and emblements analysis.

Fruit of the poisonous tree: Derivative evidence tainted by an antecedent constitutional violation; governed by the exclusionary rule and its exceptions in criminal procedure.

Why It Matters in Research

Property corpus: The real property / personal property distinction — rooted versus severed — is a threshold issue in any dispute involving trees. Researchers working through older deed disputes, trespass cases, or timber-cutting actions should verify whether the operative facts concern standing trees (realty) or cut timber (personalty), because the applicable doctrine, and sometimes the applicable court, differs. Equity courts historically handled nuisance abatement for encroaching trees; common law courts handled damages.

Boundary tree doctrine is jurisdiction-sensitive. Some states treat the boundary tree as common property; others award ownership to whichever owner's land contains the base of the trunk. Historical sources tend to state the common-property rule as if universal — it is not.

Emblements: Where a tenant plants trees expecting a harvest (fruit trees, for instance), the emblements doctrine may govern whether the tenant can claim the fruit after the tenancy ends. Researchers conflating ornamental trees with cultivated crops will miss the emblements analysis entirely.

Criminal procedure corpus: The phrase "fruit of the poisonous tree" is a doctrinal label, not a statutory term. It will not appear in statutory indexes; researchers must search case law and secondary sources. The doctrine's exceptions (independent source, inevitable discovery, attenuation of taint) are where most modern litigation is contested and where the corpus of criminal procedure materials is densest.

Metaphorical uses of "tree" in legal texts — genealogical trees in descent and distribution, decision trees in evidence scholarship — appear with some frequency in older materials and require disambiguation from the property and procedure senses.

Historical Dictionary Support

Bouvier's definition is the most practically complete of the historical sources: it captures both the botanical description and the critical real property / personal property distinction, citing Mississippi authority for the proposition that size is irrelevant to classification. Anderson's contributes the Latin maxim and a concise statement of the nuisance rule for overhanging branches, including the important limitation that the aggrieved neighbor cannot cut down the tree or remove the roots — remedies are limited to self-help at the boundary and a damages action. Burrill's entry is spare, noting only the Latin term arbor and distinguishing it from lignum (wood already cut), which usefully underscores the severed/unsevered distinction at the level of Roman-derived terminology.

None of the historical dictionaries address the fruit-of-the-poisonous-tree doctrine, which is an entirely twentieth-century development in American constitutional law and postdates all three sources.

Jurisdictional Note

The rule that a severed tree immediately becomes personal property is broadly uniform across American jurisdictions. Boundary tree doctrine varies: most states apply a common-ownership rule, but the mechanics of how a boundary is determined (trunk center, point of emergence from soil) differ. Damages for wrongful destruction of trees — particularly ornamental trees — vary considerably, with some states permitting replacement cost and others capping recovery at diminution in market value of the land.

Encyclopedia Cross-Reference

Property Law Encyclopedia: "Trees and Vegetation — Boundary Trees, Overhanging Branches, Root Encroachment"
Criminal Law Encyclopedia: "Exclusionary Rule and Fruit of the Poisonous Tree (Mapp, Wong Sun)"

TREEmain

Anderson's Dictionary of Law • 1890

Solo cedit quod solo implantatur. With the land goes whatever is on the land planted. See LAND; TERRA. See AT, 2; BOUNDARY; CROP; EMBLEMENTS; FIXTURES; LAND; LOGS; PERSONALTY; STUMP; TIMBER. Overhanging branches are a nuisance; and the person over whose land they hang may cut them off, or have his action for damages and an abatement of the nuisance. He cannot cut down the trees, nor remove the roots further than they produce damage.¹

TREEmain

Bouvier's Law Dictionary • 1928

In a figurative sense, root is used to signify the person from whom one or more others are descended. See CONSANGUINITY;

TREEmain

Bouvier's Law Dictionary • 1928

A woody plant, which in respect of thickness and height grows greater than any other plant. A woody plant, the branches of which spring from, and are supported upon, a trunk or body. It may be young or old, small or great; 70 Miss. 411. Trees are part of the real estate while growing and before they are severed from the freehold; but as soon as they are cut down they are personal property. Some trees are timber trees, while others do not bear that denomination. See TIMBER. Trees belong to the owner of the land where they grow; but if the roots go out of one man's land into that of another, or the branches spread over the adjoining es- tates, such roots or branches may be cut off by the owner of the land into which they thus grow; Rolle 394; 6 Ves. Ch. 109; 78 Cal. 611. See 107 Mass. 234; Wood, Nuis. § 112. When the roots grow into the adjoining land, the owner of such land may lawfully claim a right to hold the tree in common with the owner of the land where it was planted; but if the branches only over- shadow the adjoining land, and the roots do not enter it, the tree wholly belongs to the owner of the estate where the roots grow; 1 Ld. Raym. 737. See 1 Pick. 224; 6 N. H. 430. When the tree grows direct- ly on the boundary-line, so that the line passes through it, it is the property of both owners, whether it be marked as a bound- ary or not; 12 Ν. Η. 454; 83 Ia. 301; 84 Barb. 547; 38 Vt. 115. As to sales of standing timber, see 8 Harv. L. Rev. 367;

TREEn.

Websters Unabridged Dictionary (1913) • 1913

Any perennial woody plant of considerable size (usually over twenty feet high) and growing with a single trunk. Something constructed in the form of, or considered as resembling, a tree, consisting of a stem, or stock, and branches; as, a genealogical tree. A piece of timber, or something commonly made of timber; -- used in composition, as in axletree, boottree, chesstree, crosstree, whiffletree, and the like. A cross or gallows; as Tyburn tree. [Jesus] whom they slew and hanged on a tree. Acts x. 39. 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). A mass of crystals, aggregated in arborescent forms, obtained by precipitation of a metal from solution. See Lead tree, under Lead. Tree bear (Zoöl.), the raccoon. [Local, U.S.] -- Tree beetle (Zoöl.) any one of numerous species of beetles which feed on the leaves of trees and shrubs, as the May beetles, the rose beetle, the rose chafer, and the goldsmith beetle.  -- Tree bug (Zoöl.), any one of numerous species of hemipterous insects which live upon, and suck the sap of, trees and shrubs. They belong to Arma, Pentatoma, Rhaphigaster, and allied genera.  -- Tree cat (Zool.), the common paradoxure (Paradoxurus musang).  -- Tree clover (Bot.), a tall kind of melilot (Melilotus alba). See Melilot.  -- Tree crab (Zoöl.), the purse crab. See under Purse.  -- Tree creeper (Zoöl.), any one of numerous species of arboreal creepers belonging to Certhia, Climacteris, and allied genera. See Creeper, 3.  -- Tree cricket (Zoöl.), a nearly white arboreal American cricket (Ecanthus nivoeus) which is noted for its loud stridulation; -- called also white cricket.  -- Tree crow (Zoöl.), any one of several species of Old World crows belonging to Crypsirhina and allied genera, intermediate between the true crows and the jays. The tail is long, and the bill is curved and without a tooth.  -- Tree dove (Zoöl.) any one of several species of East Indian and Asiatic doves belonging to Macropygia and allied genera. They have long and broad tails, are chiefly arboreal in their habits, and feed mainly on fruit.  -- Tree duck (Zoöl.), any one of several species of ducks belonging to Dendrocygna and allied genera. These ducks have a long and slender neck and a long hind toe. They are arboreal in their habits, and are found in the tropical parts of America, Africa, Asia, and Australia.  -- Tree fern (Bot.), an arborescent fern having a straight trunk, sometimes twenty or twenty-five feet high, or even higher, and bearing a cluster of fronds at the top. Most of the existing species are tropical.  -- Tree fish (Zoöl.), a California market fish (Sebastichthys serriceps).  -- Tree frog. (Zoöl.) (a) Same as Tree toad. (b) Any one of numerous species of Old World frogs belonging to Chiromantis, Rhacophorus, and allied genera of the family Ranidæ. Their toes are furnished with suckers for adhesion. The flying frog (see under Flying) is an example.  -- Tree goose (Zoöl.), the bernicle goose.  -- Tree hopper (Zoöl.), any one of numerous species of small leaping hemipterous insects which live chiefly on the branches and twigs of trees, and injure them by sucking the sap. Many of them are very odd in shape, the prothorax being often prolonged upward or forward in the form of a spine or crest.  -- Tree jobber (Zoöl.), a woodpecker. [Obs.] -- Tree kangaroo. (Zoöl.) See Kangaroo.  -- Tree lark (Zoöl.), the tree pipit. [Prov. Eng.] -- Tree lizard (Zoöl.), any one of a group of Old World arboreal lizards (Dendrosauria) comprising the chameleons.  -- Tree lobster. (Zoöl.) Same as Tree crab, above.  -- Tree louse (Zoöl.), any aphid; a plant louse.  -- Tree moss. (Bot.) (a) Any moss or lichen growing on trees. (b) Any species of moss in the form of a miniature tree.  -- Tree mouse (Zoöl.), any one of several species of African mice of the subfamily Dendromyinæ. They have long claws and habitually live in trees.  -- Tree nymph, a wood nymph. See Dryad.  -- Tree of a saddle, a saddle frame.  -- Tree of heaven (Bot.), an ornamental tree (Ailantus glandulosus) having long, handsome pinnate leaves, and greenish flowers of a disagreeable odor.  -- Tree of life (Bot.), a tree of the genus Thuja; arbor vitæ.  -- Tree onion (Bot.), a species of garlic (Allium proliferum) which produces bulbs in place of flowers, or among its flowers.  -- Tree oyster (Zoöl.), a small American oyster (Ostrea folium) which adheres to the roots of the mangrove tree; -- called also raccoon oyster.  -- Tree pie (Zoöl.), any species of Asiatic birds of the genus Dendrocitta. The tree pies are allied to the magpie.  -- Tree pigeon (Zoöl.), any one of numerous species of longwinged arboreal pigeons native of Asia, Africa, and Australia, and belonging to Megaloprepia, Carpophaga, and allied genera.  -- Tree pipit. (Zoöl.) See under Pipit.  -- Tree porcupine (Zoöl.), any one of several species of Central and South American arboreal porcupines belonging to the genera Chætomys and Sphingurus. They have an elongated and somewhat prehensile tail, only four toes on the hind feet, and a body covered with short spines mixed with bristles. One South American species (S. villosus) is called also couiy; another (S. prehensilis) is called also coendou.  -- Tree rat (Zoöl.), any one of several species of large ratlike West Indian rodents belonging to the genera Capromys and Plagiodon. They are allied to the porcupines.  -- Tree serpent (Zoöl.), a tree snake.  -- Tree shrike (Zoöl.), a bush shrike.  -- Tree snake (Zoöl.), any one of numerous species of snakes of the genus Dendrophis. They live chiefly among the branches of trees, and are not venomous.  -- Tree sorrel (Bot.), a kind of sorrel (Rumex Lunaria) which attains the stature of a small tree, and bears greenish flowers. It is found in the Canary Islands and Teneriffe.  -- Tree sparrow (Zoöl.) any one of several species of small arboreal sparrows, especially the American tree sparrow (Spizella monticola), and the common European species (Passer montanus).  -- Tree swallow (Zoöl.), any one of several species of swallows of the genus Hylochelidon which lay their eggs in holes in dead trees. They inhabit Australia and adjacent regions. Called also martin in Australia.  -- Tree swift (Zoöl.), any one of several species of swifts of the genus Dendrochelidon which inhabit the East Indies and Southern Asia.  -- Tree tiger (Zoöl.), a leopard.  -- Tree toad (Zoöl.), any one of numerous species of amphibians belonging to Hyla and allied genera of the family Hylidæ. They are related to the common frogs and toads, but have the tips of the toes expanded into suckers by means of which they cling to the bark and leaves of trees. Only one species (Hyla arborea) is found in Europe, but numerous species occur in America and Australia. The common tree toad of the Northern United States (H. versicolor) is noted for the facility with which it changes its colors. Called also tree frog. See also Piping frog, under Piping, and Cricket frog, under Cricket.  -- Tree warbler (Zoöl.), any one of several species of arboreal warblers belonging to Phylloscopus and allied genera.  -- Tree wool (Bot.), a fine fiber obtained from the leaves of pine trees.

TREEv.

Websters Unabridged Dictionary (1913) • 1913

To drive to a tree; to cause to ascend a tree; as, a dog trees a squirrel. J. Burroughs. To place upon a tree; to fit with a tree; to stretch upon a tree; as, to tree a boot. See Tree, n., 3.

treenoun

Wiktionary (English) • 2026

Wiktionary contributors • CC BY-SA 4.0 • via Kaikki
Extracted and formatted for display by Law Mind. Source link opens the current Wiktionary page and its contributor history; it is not a frozen copy of this extract.

A perennial woody plant taller and larger than a shrub with a wooden trunk and, at some distance from the ground, having leaves and branches. | Any other plant (such as a large shrub or herb) that is reminiscent of the above in form and size. | An object made from a tree trunk and having multiple hooks or storage platforms. | A device used to hold or stretch a shoe open. | The structural frame of a saddle. | A connected graph with no cycles or, if the graph is finite, equivalently a connected graph with n vertices and n−1 edges. | A recursive data structure in which each node has zero or more nodes as children, but does not share children with other nodes. | A display or listing of entries or elements such that there are primary and secondary entries shown, usually linked by drawn lines or by indenting to the right. | Any structure or construct having branches representing divergence or possible choices. | The structure or wooden frame used in the construction of a saddle used in horse riding. | Marijuana. | A cross or gallows. | A mass of crystals, aggregated in arborescent forms, obtained by precipitation of a metal from solution. | The fifth Lenormand card. | Alternative letter-case form of TREE.

treeverb

Wiktionary (English) • 2026

To chase (an animal or person) up a tree. | To place in a tree. | To place upon a shoe tree; to fit with a shoe tree; to stretch upon a shoe tree. | To take refuge in a tree.

TREEnoun

Wiktionary (English) • 2026

An extremely fast-growing function based on Kruskal's tree theorem.

Explore the full Law Mind legal research platform.

Subscribe Encyclopedia Sign In