diff --git a/journal/2021-01-31.md b/journal/2021-01-31.md
index e28db5d53..31a4224c6 100644
--- a/journal/2021-01-31.md
+++ b/journal/2021-01-31.md
@@ -1,3 +1,5 @@
 # 2021-01-31
 
-- [[anarchist]]
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+- [[anarchist]]
+- [[tree]]
+  - [[trees]]
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diff --git a/trees.md b/trees.md
new file mode 100644
index 000000000..9ad448970
--- /dev/null
+++ b/trees.md
@@ -0,0 +1,11 @@
+# Trees
+
+- [[pull]] [[graph]]
+- [[pull]] [[inosculation]]
+
+
+[//begin]: # "Autogenerated link references for markdown compatibility"
+[pull]: pull "Pull"
+[graph]: graph "Graph"
+[inosculation]: inosculation "Inosculation"
+[//end]: # "Autogenerated link references"
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