is an option for Tree and related functions that specifies what style should be used for subtree element labels.


  • TreeElementLabelStyle allows specifying the label style of the root node of a tree, as well as that of any subtrees at positions matching a pattern.
  • Any style specification as used in Style can be used as a setting for TreeElementLabelStyle.
  • The following option settings can be used:
  • Automaticuse the automatic setting for style
    styleuse style for the subtree element label
    {pos1style1,pos2style2,}use stylei for the subtree element label at relative position posi
    {patt1style1,patt2style2,}use stylei for the subtree elements at positions matching the pattern patti
  • Subtree elements with no explicit label style are taken to use the automatic style.
  • Color directives such as Red, as well as text specifications such as Bold or Small, can be given.
  • To specify multiple style directives, use Directive[style1,style2,].
  • Giving the option setting TreeElementLabelStylestyle is effectively equivalent to replacing the label-like elements of a formatting or related construct by Style[label,style].
  • Subtree element label specifications are effectively applied in the order TreeElementLabel, TreeElementLabelStyle and TreeElementLabelFunction, with later specifications overriding earlier ones.
  • In TreeElementLabelStyle, Allstyle uses style for all subtrees.
  • In TreeElementLabelStyle, TreeCases[pattern]style uses style for all subtrees with data matching pattern.


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Basic Examples  (4)

Style an individual subtree element label:

Style all subtree element labels:

Use the same style for all subtree element labels:

Specify positions using position patterns:

Specify positions using data patterns:

Properties & Relations  (5)

Styles for subtree element labels can be specified by position:

Styles specified by a subtree take precedence over styles specified by its ancestors:

A position {i,j,} in a subtree refers to its subtree at relative position {i,j,}:

A relative position {2} at position {1} refers to the global position {1,2}:

In general, a pattern patt applies to subtrees at global positions {i,j,} that match patt:

Wolfram Research (2022), TreeElementLabelStyle, Wolfram Language function,


Wolfram Research (2022), TreeElementLabelStyle, Wolfram Language function,


Wolfram Language. 2022. "TreeElementLabelStyle." Wolfram Language & System Documentation Center. Wolfram Research.


Wolfram Language. (2022). TreeElementLabelStyle. Wolfram Language & System Documentation Center. Retrieved from


@misc{reference.wolfram_2024_treeelementlabelstyle, author="Wolfram Research", title="{TreeElementLabelStyle}", year="2022", howpublished="\url{}", note=[Accessed: 26-May-2024 ]}


@online{reference.wolfram_2024_treeelementlabelstyle, organization={Wolfram Research}, title={TreeElementLabelStyle}, year={2022}, url={}, note=[Accessed: 26-May-2024 ]}