The paper, a synthesis based on data generated by an investigation in a clonal Leymus chinensis population for the period 1985-1990,deals with the development patterns and life - cycle behaviour of individual tiller, and the patterns of vegetative reproduction and tiller death, or population dynamics, within clone, The model of population dynamics of the clone was structured in terms of the transition probality matrix. Population deasity was also predicted with Rv1 from past population and Rv2 from present ...