Primula allionii is a primrose endemic to Maritime Alps. The plant was studied
in three different plots representing the different structures of cliffs where the
species usually lives. The reproductive success of the plant was analyzed in
order to evaluate its conservation status. Mean plant dimensions and
distribution within the plots were evaluated. The species resulted low morph
biased (0.13), very fertile (83.53%) and with a quite good sexual organs
efficiency of flowers (both in pin and thrum morphs) as demonstrated by the
high rate of fruit (52.18%) and seed production (20-50% ovules developed in
seeds). However, the populations remain in a demographic balance ( % =
0.38) and very few seedlings (0.21% of available seeds) were recorded in
populations. The particular habitat of the plant does not favour a consistent
population renewal. Primula allionii populations are not under a real threat at
present: but the species and its loci deserve much more consideration in the
future in order to preserve this possibly fragile habitat