Article 3, Section 3, Clauses 1 and 2
Document 1
Laws of Maryland at Large
1638Hurst 71--72By this Bill the following Offences were to be adjudged Treasons within this Province, viz. To compass or conspire the Death of the King, or the Queen his Wife, or of his Son and Heir; or to levy War against his Majesty, or to counterfeit the King's Great or Privy Seal, or his Coin; or to join or adhere to any foreign Prince or State, being a professed Enemy of his Majesty, in any Practice or Attempt against his said Majesty: Or to compass, conspire, or cause the Death of the Lord Proprietary within this Province, or of his Lieut. General for the Time being, (in Absence of his Lordship,) or to join, adhere or confederate with any Indians, or any foreign Prince or Governor to the invading of this Province, or disheriting the Lord Proprietary of his Seignory and Dominion therein. All Offences of Treason to be punished by Drawing, Hanging and Quartering of a Man, and Burning of a Woman; the Offender's Blood to be corrupted, and to forfeit all his Lands, Tenements, Goods, &c. to his Lordship. But Punishment of Death to be inflicted on a Lord of a Manor by Beheading.
The Founders' Constitution
Volume 4, Article 3, Section 3, Clauses 1 and 2, Document 1
http://press-pubs.uchicago.edu/founders/documents/a3_3_1-2s1.html
The University of Chicago Press
Hurst, James Willard. The Law of Treason in the United States: Collected Essays. Westport, Conn.: Greenwood Publishing Corp., 1971.