The present study was aimed at researching the morphological and genetic variability in the long-styled and short-styled plant forms in four subspecies of L. mucronatum. ANOVA and PCA analysis of morphological characters revealed significant difference among the long-styled and short-styled plants in all four studied subspecies. Similarly, AMOVA and Gst test, as well as Hickory test have shown significant molecular difference among these subspecies, while PCoA plot of molecular data after 99 permutations has disclosed genetic divergence of the long-styled plants versus short-styled plants in these subspecies. STRUCTURE analysis indicated a far greater genetic differentiation between the two plant forms of L. mucronatum subsp. mucronatum. Some degree of gene exchange was identified between all four subspecies, indicating that they are not completely isolated from each other.
