in Thoreau’s Journal:

It is wonderful what a variety of flowers may grow within the range of a walk & how long some very conspicuous ones may escape the most diligent walker—If you do not chance to visit their localities the right week or fortnight––when their signs are out. 

It is a flaming leaf The very leaf has flowers––not the ripe tints of autumn but the rose in the cheek of infancy––a more positive flowering.