The Massachusetts-based painter’s large-scale, vividly colored landscapes are informed by his daily bike rides through his home village of Florence. McCallister’s shocking palette renders even familiar scenes—forest vignettes, nature’s “perpetual rot and rebirth”—anew. Here, he turns his focus to the spring and fall, whose intense crescendos of buds, blooms, and final expression of color punctuate the constancy of summer and winter.