This is a vintage Portmeirion the botanic garden 1972 rhododendron mug.
It is white in color, a picture of a pink rhododendron with a dragonfly and a butterfly, towards the bottom it says rhododendron lepidotum under the picture. On the other side, it has a picture of a blue and pink butterfly with polka dots. On the bottom of the mug, it has a symbol that says the botanic garden circa 1818.
It measures approximately 3.5" tall, 4.25" wide, and 3.25 deep.
It is in good pre-owned condition.