The thesaurus lists over 80 different words for green, more than any other color. But Robert Finch believes this may still not be enough. At a time of year when many are rhapsodizing the flowers, Bob contemplates the richness and variety of leaf tones that nature crowds into the season. Robert Finch is taking some time off to write a new book. In his absence we're replaying some favorite essays. This week's essay originally aired in June, 2013.