Clary sage oil glands on calyx (Salvia sclarea) Science Image

Ref: 80015796



Coloured scanning electron micrograph (SEM) of glandular trichomes (microscopic hairs, purple) on the calyx of a clary sage (Salvia sclarea) plant. The trichomes are secreting globules of essential oils (round). Magnification: x250 when printed at 10 centimetres wide.