Two species from the yellow-eyed grass family: left, Xyris caroliniana; right, Xyris flexuosa.
Of the yellow-eyed grass family (Xyris), from left to right: bog (X. difformis), Richard's (X. elata),…
"Xyris operculata; 1. a flower seen in front; 2. a style, stigmas and stamens." -Lindley, 1853