Li Bo in ‘Up-Youth’ at Klein Sun Gallery

‘Up-Youth,’ a group exhibition at Chelsea’s Klein Sun Gallery presented with the Times Art Museum in Beijing, features this piece by Li Bo, whose fragmented bike on flat sections of concrete suggests a jittery ride for disappearing national symbol. (Through August 8th).

Li Bo, White in Dark Grey No. 3, mixed media, 2010-12.

‘Hello Walls’ at Barbara Gladstone Gallery

Titled after a Willie Nelson ballad about lost love, ‘Hello Walls’ at Barbara Gladstone Gallery’s 21st Street space dwarfs the viewer with huge wall paintings by big-name artists. Here, Ugo Rondinone’s fuzzy target at the show’s entrance acts like a pulsing beacon to draw visitors into the gallery while Michael Craig-Martin’s take-away cup is so big it feels architectural. (Through July 31st).

Installation view at Barbara Gladstone Gallery’s 21st Street location, Michael Craig-Martin on left, Ugo Rondinone on right, July 2015.

Greg Bogin at Marlborough Gallery

The neon color and curvy, wave-contoured form of Greg Bogin’s shaped canvas ‘Sunny disposition (oasis)’ is a summery-feeling merger of beach culture and minimal abstraction. Like Martin Puryear’s Phrygian cap sculptures which it resembles, it suggests freedom, but more of a sand-between-the-toes variety. (At Marlborough Gallery Chelsea through July 31st).

Greg Bogin, Sunny disposition (oasis), synthetic paint and urethane on canvas, 72 x 73 inches, 2014.

De Wain Valentine at David Zwirner Gallery

California Light and Space artist De Wain Valentine pushed his chosen medium of polyester resin by finding a way to make larger pours and bigger pieces in the ‘60s; with their huge size, pieces like ‘Circle Gold-Rose’ from 1970 become actors in the room, changing the environment with shifting color. (At David Zwirner Gallery through August 7th).

De Wain Valentine, Circle Gold-Rose, cast polyester resin, 70 3/8 x 70 x 4 7/8 in, 1970.

Ruth Root at Andrew Kreps Gallery

Using paint, fabric and Plexiglas, New York artist Ruth Root paints and sews her way toward charmingly idiosyncratic understandings of what abstract painting can be in her latest show at Chelsea’s Andrew Krep Gallery. (Through August 14th).

Ruth Root, Untitled, fabric, Plexiglas, enamel paint, and spray paint, 104 ½ x 63 ¼ inches, 2014-15.