A relative of the half blood has the same status as a relative of the whole blood of the same degree.
Structure Maryland Statutes
Title 1 - Estates of Decedents -- General Provisions
Subtitle 2 - Determining Relationship
Section 1-201.1 - Application of Rules of Construction
Section 1-202 - Surviving Spouse
Section 1-203 - Degree of Relationship -- Civil Law
Section 1-204 - Degree of Relationship -- Relative of Half Blood
Section 1-206 - Legitimate Child
Section 1-208 - Illegitimate Child
Section 1-208.1 - Effect of Presumed Parentage; Rebutting Presumption