[R] Merge disparate lists

[Jim Burke]

My two lists look like below
Need an R code example that
combines the two.

l_one
"key"
2
1
2


l_two
"ndx", "descr"
1, "this"
2, "that"
3, "other"
4, "finis"

My goal is a new list that looks
like below.
ndx descr
2   that
1   this
2   that

Thanks,
Jim