Peculiarities of ontogenesis of <i>Bassia laniflora</i> (S.G. Gmel.) A.J. Scott. (Chenopodiaceae)

Peculiarities of ontogenesis and phytosociology of Bassia laniflora (S.G. Gmel.) A.J. Scott (family Chenopodiaceae) in South of Penza region on sandy soils is studied. Bassia laniflora grows in the composition of sparse forb sandy steppes, together with Achillea nobilis L., Erigeron сanadensis L., Rumex acetosella L., Artemisia pontica L., acting as dominant and codominant. Participation of Bassia laniflora in plant communities115%. Age status and as well as biometric characteristics are described (two age periodvirgin, generative; five age status seedling plants, juvenile, immature, virgin, generative). Polymorphism of virgin and generative plants Bassia laniflora is established. Virgin and generative plants into 3 groups according characteristics of life forms (height of the escape, diameter of stem, especially branching, number of flowers) are divided. Pictures of different life forms of generative plants are there. Causes of polymorphism plants Bassia laniflora and possibilities of adaptation at level of ontogenesis are discussed.