marsh marigold, Caltha palustris, a plant in the buttercup family, growing in wet, boggy locations.
Primula deorum, a flowering plant known as God's cowslip and rila cowslip
A low-growing plant, Primula veris, with yellow flowers.
Primula florindae, a flowering plant known as giant cowslip and Tibetan cowslip
Pulmonaria angustifolia, blue cowslip or narrow-leaved lungwort
Primula sikkimensis, a flowering plant known as Himalayan cowslip and Sikkim cowslip
A swamp plant of Europe and North America having bright yellow flowers resembling buttercups; Caltha palustris.