ABSTRACT
The secretory hair of Symphytum officinale, is of interest due to its structure, as it is surrounded with red-fluorescing hill-like rosette cells (Colour Fig. 12). Under a luminescence microscope this complex structure is lightly observed. As seen in Colour Fig. 12, the secretory hairs of the flower petal fluoresce in green (maximum at 520 nm) and in red (maximum at 680 nm which belong to chlorophyll) whereas the structures in pistil stigma lack chlorophyll and lightening in green (maximum 520 nm). Pollen emission has maximum 470-480 nm and shoulder 580 nm. The secretory cells of Symphytum officinale contains alkaloids, among which cyanoglossin, that fluoresces at 460-480 nm (Roshchina and Melnikova, 1995), and flavonoid rutin (Golovkin et al., 2001) can also contribute to the emission. Besides the substances, slime secretions of the plant species contain tannins, which has green fluorescence with maximum at 520530 nm.
