Dryopteris dilatata had a different vegetative growth strategy compared to the other two species; it differed in timing of intensive growth of frond length and increase of frond number and had the lowest values of generative parameters among the three species.
The current study is a part of a larger project investigating the possible reasons of different regional frequency and local abundance of three closely related co-occurring fern species: Dryopteris carthusiana, Dryopteris expansa and Dryopteris dilatata.
Dryopteris dilatata produced new fronds even in September, however the growth period of the longest frond matched that of D.
Dryopteris dilatata had the lowest proportion of fertile individuals in the final harvest (80.
Dryopteris dilatata had a different growth strategy compared to the other two species.
Paprocie z grupy Dryopteris dilatata w Polsce (The ferns of the Dryopteris dilatata complex in Poland).