The average frost-free period lasts only 120 days. Our morphological data
might reflect the adaptiveness of the species to this harsh climate. H. chaiyrakanicum shows biological features that favor its
survival in this environment like a negligible rosette stem and dense covering of rachises which protect the wintering buds.
Longer sprout vs less vegetative biomass (smaller number of leaflets) compensate for the short stem and facilitate the
production and effective dispersal of seeds during a short reproductive season.