ALEXANDRIA, Va., July 3 -- United States Patent no. PP36,798, issued on July 1, was assigned to The Estate of Thomas H. Boyce (Hadley, Mass.) and University of Massachusetts (Boston).

"Ageratum plant named 'Agerboyuma'" was invented by Thomas H. Boyle (Hadley, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A new and distinct cultivar of Ageratum plant named 'Agerboyuma', characterized by its relatively compact, upright to outwardly spreading and mounding plant habit; moderately vigorous to vigorous growth habit; freely branching habit; relatively large leaves; freely and continuous flowering habit; light violet-colored inflorescences that resist fading; and good garden performance."

The patent was fil...