Photograph: Gary Wayne Gilbert

Sheila Gallagher, an assistant professor of fine arts, was one of four finalists, drawn from a pool of 40 nominees, for the Institute of Contemporary Art’s 2006 James and Audrey Foster Prize, given biennially to a Boston artist “whose work demonstrates adventurousness, conceptual strength, and skillful execution.” Although she didn’t win the $25,000 jury prize, Gallagher came out on top in a popular vote of museum patrons, with 40 percent of voters favoring her installation, Unknown Source. The installation included Cumulonimbus (above), a depiction of a cloud composed of fresh flowers, which Gallagher replenished four or five mornings a week.