I cut up a veitchii peristome to look at under a microscope:
100x: First order (the large ridges that terminate in teeth) and second order ridges (linear arrangements of small scale-like cells) are visible.
Nectar glands (clumps of reddish cells) sit inside pockets near the edge of the peristome. Field of view is 2 mm diameter.
200x: A closer look at one of the nectar glands. Field of view here is 1mm in diameter.
200x: Peristome sliced perpendicular to the ridges. Most of the peristome is made of spongy tissue. There's an empty channel where the nectar gland sits. There're some vascular bundles (more densely packed smaller cells) visible arranged around the hole. Field of view = 1mm.
200x: Peristome sliced parallel to ridges. Nectar gland visible as a tube-like structure that runs inside a channel and terminates in a cluster of reddish cells. The peristome is shiny with nectar. Field of view = 1mm.
50x: Peristome sliced parallel to ridges. Water immersion to get a better look at the cells. The tube-like nectar gland as well as a bunch of vascular bundles are visible here running through the spongy peristome in the shape of a "C." Field of view = 4mm.
200x of the above image: Large vacuoles can be seen inside the nectar gland cells, they look like droplets of oil. The vacuoles in the outer-most nectar cells are reddish.
