Xyridaceae, the Yellow-eyed Grass Famil

Small herbs with basal leaves and erect flower-stalks bearing a head of perfect yellow flowers, in summer.

1a. Base of plant bulbous-thickened (3-6 dm. high)	Yellow-eyed Grass, Xyris flexuosa.
1b. Base of plant not bulbous-thickened (1-3 dm. high)	Yellow-eyed Grass, Xyris montana.