diff --git a/src/main/java/net/onrc/onos/api/flowmanager/SingleSrcTreeFlow.java b/src/main/java/net/onrc/onos/api/flowmanager/SingleSrcTreeFlow.java
new file mode 100644
index 0000000..cecb605
--- /dev/null
+++ b/src/main/java/net/onrc/onos/api/flowmanager/SingleSrcTreeFlow.java
@@ -0,0 +1,87 @@
+package net.onrc.onos.api.flowmanager;
+
+import java.util.Set;
+
+import net.onrc.onos.core.matchaction.MatchActionPlan;
+import net.onrc.onos.core.matchaction.action.OutputAction;
+import net.onrc.onos.core.matchaction.match.PacketMatch;
+import net.onrc.onos.core.util.Dpid;
+import net.onrc.onos.core.util.Pair;
+import net.onrc.onos.core.util.SwitchPort;
+
+/**
+ * An IFlow object expressing the point-to-multipoints tree flow for the packet
+ * layer.
+ */
+public class SingleSrcTreeFlow implements IFlow {
+    protected String id;
+    protected PacketMatch match;
+    protected SwitchPort ingressPort;
+    protected Tree tree;
+    protected Set<Pair<Dpid, OutputAction>> outputActions;
+
+    /**
+     * Creates new instance using Tree object.
+     *
+     * @param id ID for this object.
+     * @param match Traffic filter for the tree.
+     * @param ingressPort A ingress port of the tree.
+     * @param tree Tree object specifying tree topology for this object.
+     * @param outputActions The set of the pairs of the switch DPID and
+     *        OutputAction object at the egress edge switchs.
+     */
+    public SingleSrcTreeFlow(String id, PacketMatch match,
+            SwitchPort ingressPort, Tree tree, Set<Pair<Dpid, OutputAction>> outputActions) {
+        this.id = id;
+        this.match = match;
+        this.ingressPort = ingressPort;
+        this.tree = tree;
+        this.outputActions = outputActions;
+
+        // TODO: check if the tree is a P2MP tree.
+        // TODO: check consistency among rootPort, tree, and actions.
+    }
+
+    @Override
+    public String getId() {
+        return id;
+    }
+
+    @Override
+    public PacketMatch getMatch() {
+        return match;
+    }
+
+    @Override
+    public MatchActionPlan compile() {
+        // TODO Auto-generated method stub
+        return null;
+    }
+
+    /**
+     * Gets the ingress port (the root) of the tree.
+     *
+     * @return The ingress port of the tree.
+     */
+    public SwitchPort getIngressPort() {
+        return ingressPort;
+    }
+
+    /**
+     * Gets the tree.
+     *
+     * @return The tree object.
+     */
+    public Tree getTree() {
+        return tree;
+    }
+
+    /**
+     * Gets the output actions for the tree.
+     *
+     * @return The set of the pairs of Dpid and OutputAction object.
+     */
+    public Set<Pair<Dpid, OutputAction>> getActions() {
+        return outputActions;
+    }
+}