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We consider the peculiarities of the optical spectra of far evolved starswith circumstellar gaseous-dusty envelopes: the time variability of theabsorption-emission profiles of the H$\alpha$ line, the presence of stationaryemission and absorption molecular bands, multicomponent complex profiles of theNaI D-doublet lines. We show that the peculiarities of the line profiles (thepresence of an emission component in the NaI D-doublet lines, the specific typeof the molecular features, the asymmetry or splitting of the profiles ofstrongest absorptions with low excitation potential of the low level) can beassociated with the kinematic and chemical properties of the circumstellarenvelope and its morphological type.

Circumstellar envelope manifestations in the optical spectra of evolved stars