Caltha palustris, known as marsh-marigold and kingcup, is a small to medium sized perennial herbaceous plant of the buttercup family, native to marshes...

Caltha is a genus of rhizomatous perennial flowering plants in the family Ranunculaceae ("buttercup family"), to which ten species have been assigned....

Caltha leptosepala, the white marsh marigold, twinflowered marsh marigold, or broadleaved marsh marigold, is a North American species of flowering plant...

Caltha introloba, commonly known as the alpine marsh-marigold is a small (during flowering 1–2 cm high) hairless, perennial alpine herb, that is endemic...

eriocarpa DC. Calendula hydruntina (Fiori) Lanza Calendula prolifera Hort. ex Steud. Calendula × santamariae Font Quer Caltha officinalis (L.) Moench...

Caltha obtusa; commonly known as white caltha; is a small (usually 2–6 cm), perennial herbaceous plant belonging to the family Ranunculaceae, that grows...

Caltha scaposa is a low, perennial herb with one or two yellow hermaphrodite saucer-shaped flowers. This marsh-marigold species belongs to the buttercup...

Marsh marigold (Caltha palustris) is common in the Faroe Islands during May and June....

Caltha dioneaefolia is a dwarf perennial herb, of the Buttercup Family (Ranunculaceae) with apparently seated pale yellow flowers with about seven stamens...

Caltha natans is a species of flowering plant in the buttercup family. It goes by the common name floating marsh marigold. Caltha natans is an aquatic...