Md. Code, Courts and Judicial Proceedings § 5–103

(a) Within 20 years from the date the cause of action accrues, a person shall:

(1) File an action for recovery of possession of a corporeal freehold or leasehold estate in land; or

(2) Enter on the land.

(b) (1) This section does not affect the common-law doctrine of prescription as it applies to the creation of incorporeal interests in land by adverse use.

(2) This section does not affect the periods of limitations set forth in § 6-103 or § 8-107 of the Real Property Article.