in Thoreau’s Journal:

I am surprised to find arethusa abundantly out in Hubbards Close, maybe 2 or 3 days though not yet at Arethusa Meadow probably on account of the recent freshet. It is so leafless that it shoots up unexpectedly.  It is all color, a little hook of purple flame projecting from the meadow into the air. Some are comparatively pale. This high-colored plant shoots up suddenly, all flower, in meadows where it is wet walking.  A superb flower.