Phosphorescent Vale Goldenrod

Greek phōsphóros, light-bringer — adjectival suffix -escent. As a color modifier, phosphorescent implies a saturated-and-cool-glow-after-stimulation quality, the bright cool-green-blue color of Cu-doped-ZnS glow-in-the-dark photoluminescent surfaces. Sits at the bright-and-cool end of the grid, parallel to fluorescent and luminous in usage.

Latin vallis, valley. As a color modifier, vale implies a broad-pastoral-valley quality, the visual register of Cotswold-and-Yorkshire-Dales wide river-valley pasture-and-hedgerow agricultural surfaces in spring-and-autumn pastoral-and-overcast English afternoon-light. Sits at the modifier-and-place end of the grid, parallel to glen and dale in usage.

Solidago, the late-summer wildflower of North American meadows whose tall sprays of small yellow flowers signal the end of the growing season. The color refers to the flower head at full bloom: a warm, slightly muted yellow-orange with the matte finish of small clustered florets. Cooler than mustard, deeper than dandelion. The state flower of Kentucky and Nebraska, a pollinator magnet, and the original native dye for early American homespun.