Distribution patterns of A. aestivus at four different sites of a degraded mediterranean-type ecosystem (asphodel desert), Thessally, Greece, have been studied. A first order spatial structure was identified at small block sizes and was related to asexual reproduction, a second order structure, at large block sizes, was related to sexual reproduction. Spatial distribution of A. aestivus was associated with soil depth while ecological neighbourhood was discussed in relation to degradation phenomena, especially erosion. Density dependent growth of aboveground biomass and flowering has also been explored. Self-thinning was not detected, whereas the percentage of plants flowering decreases linearly with density and this was attributed to competition for nutrients. A reciprocal equation describes the growth of the aboveground biomass with time. A two-sided competition was displayed by initial plant weight, while the rate of growth of the aboveground biomass was proved independent of density.