Vespers (page 38): "I study the hawkweed, / the buttercup protected from the grazing herd / by being poisonous"
Other names: Ranunculus, crowfoot
Family: Ranunculaceae
Type: Herbaceous annuals, aquatics, and perennials, some evergreen or semievergreen
Blooming period: early Summer
Sun requirement: Sun, partial shade
Soil requirement: Moist, well-drained
Notes: The lustrous petals reflect yellow, including onto skin when held close.
Sources: [1]