ADAMS DAVIDSON -- "The Legacy of the Hudson River School: American Landscapes, 1860-1880, opens Thursday, continuing through Nov. 26 at 3233 P St. NW.
ART LEAGUE -- "Lines Shapes And Textures," prints by Krystyna Marek, opens Friday, continuing through Nov. 4; Juried Membership Show, through Nov. 2 at 101 N. Union St., Alex.
ATHENAEUM -- Prints by members of Washington Women's Art.Center, opens Wednesday, continuing through Nov. 15 at 201 Prince St., Alex.
I.D.B. -- Carlos Merida of Guatemala, retrospective opens Tuesday, continuing through October at 801 17th St. NW.
B R KORNBLATT -- Recent prints by Mel Bochner, Chuck Close, Ralph Humphrey, Sol LeWitt, Robert Mangold, Brice Marden, Agnes Martin, Dorothea Rockburne, Julian Schnabel, Wayne Thiebaud, opens Saturday, continuing through Nov. 5 at 400 7th St. NW.
LA PETITE GALERIE -- "Patterns," watercolors and, drawings by Pauline D. Lortano, opens Saturday, continuing through October at 2924 Hunter Mill Rd., Oakton, Va.
MARKET FIVE -- "Trilogy," opens Friday, continuing indefinitely at 7th & N.Carolina Ave. SE.
McINTOSH/DRYSDALE -- Sean Scully "recent paintings," opens Saturday, continuing through Nov. 4 at 406 7th St. NW.
MIDDENDORF/LANE -- "The Figure in Bronze," small scale, including works by Archipenko, Falk, Lachaise & Storrs, opens Tuesday, continuing through Nov. 7 at 2009 Columbia Rd. NW.
NP GALLERY -- Western Hemisphere Art, opens Sunday, continuing through Oct. 24 at 3833 34th St., Mt. Rainier, Md.
OLSHONSKY -- "RUNES," Paul Martyka and Mark Nelson, opens Tuesday, continuing through Nov. 14 at 443 7th St. NW.
PRINCE ROYAL -- Rosemarie Sandweg, Robert White and Legacy, opens Sunday, continuing through October at 204 S. Royal St., Alex.
TOUCHSTONE -- "Echoes of Summer," paintings by Leni Liftin & Frances Seeger, through Sunday; Paintings by Brenda Belfield, sculpture by Jo Robinson, opens Tuesday, continuing through Nov. 1 at 2130 P St. NW.
US TOO -- Paintings by Virginia McKinnon, opens Sunday, continuing through October at 4023 Chain Bridge Rd., Fairfax.
ZENITH -- "Hansen's People," lifesize paper mache sculpture by Stephen Hansen, opens Wednesday, continuing through Nov. 5 at (rear) 1441 Rhode Island Ave. NW.