Biology Reference
In-Depth Information
Figure 5.
The nectary of
Fatsia japonica
(Araliaceae) A. Electron micrograph (SEM) of the
nectary surface shows numerous hollows (
arrows
) that indicate the position of the stomata.
Bar = 100 µm. B. Oblique section of the nectary stained with PAS and auramine O and ob-
served by epifluorescence. A thick cuticle with a complex reticulate pattern can be observed.
The guard cells of the stoma (
asterisks
), easily recognizable by their small size and starch
content, are located at the level of the inner epidermal layer. The arrow indicates the sub-
stomatal chamber. Bar = 20 µm.
Figure 6.
A nectarostoma of
Daphne sericea
(Thymelaeaceae) occluded by granular material.
Bar = 10 µm.