Fig. 10.4-7. Paradermal section of leaf of ground ivy (Glechoma). This section passes just through the base of a trichome (the red-stained material is located in the trichome); the ring of cells around the red material are epidermis cells that are part of the base of the trichome itself. Just as stomata may either have subsidiary cells or lack them, trichomes too may either have special cells around their base or simply be surrounded by ordinary epidermis cells.