Lectionary 20, designated by siglum ℓ 20 (in the Gregory-Aland numbering), is a Greek manuscript of the New Testament, on vellum leaves.
[1] The codex contains lessons from the Gospels of John, Matthew, Luke lectionary (Evangelistarium), with lacunae.
[2] It is ornamented manuscript, it contains red musical notes – neumes.
It was added to the list of the New Testament manuscripts by Johann Jakob Wettstein.
[7] The manuscript is sporadically cited in the critical editions of the Greek New Testament (UBS3).