The fact that a variable is lexically scoped doesn't imply anything about the internal implementation. Lexical scoping is more a matter of syntax than anything else.

According to the man page perlfunc:our or perldoc -f our, you can see that what the package Foo; our $foo; declaration does is get the interpreter to see occurrences of $foo unadorned, as it were, as occurrences of $Foo::foo, so it's a plain ol' package global:

An "our" declaration declares a global variable
that will be visible across its entire lexical
scope, even across package boundaries.  The
package in which the variable is entered is
determined at the point of the declaration, not at
the point of use.
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HTH

perl -e 'print "How sweet does a rose smell? "; chomp ($n = <STDIN>); 
+$rose = "smells sweet to degree $n"; *other_name = *rose; print "$oth
+er_name\n"'
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