For his latest solo exhibition, Wilderness and Ornament, the Los Angeles–based designer David Wiseman has assembled nearly four dozen nature-inspired decorative items, from statement-making bronze room separators and ornate bowls to a series of site-specific plaster walls, which are adorned with handcrafted porcelain patterns with alternating rope-like, lacy, floral, and geometric patterns. Wiseman constructed the walls in his New York studio over the past year, adding finishing touches to the piece after it w…