Paul Corio weighs in on a diverse group of painting shows on view in New York in September including: Douglas Melini at Eleven Rivington (through October 5), George Hofmann and Ben Dowell at Ventana244 (through October 12), Tomma Abts at David Zwirner (through October 25), Helene Appel at James Cohan (through October 4), Morris Louis: Veils at Mnuchin Gallery (through October 18), Ward Jackson: Black & White Diamonds 1960s at Minus Space (through October 25), Space Matters at Brian Morris Gallery, Junction at Edward Thorp Gallery (through October 25), Philippe Decrauzat: pour tout diviser at Elizabeth Dee (through October 29), Stephen Maine at Melville House (through December 31).