A revision of Dryopteris sect. Diclisodon (Dryopteridaceae) based on morphological and molecular evidence with description of a new species

Two new Dryopteris taxa originated from distantly related congeners in China

“…The aforementioned results further support that D. parabissetiana originated from a hybridization event between D. bissetiana and D. tsoongii , and not related to D. championii with a haplotype from D. fuscipes , although they share some similar traits (Table 1). Phylogenetic analysis of plastid combined with nuclear genes has proven effective in elucidating complex hybridization patterns and relationships within network evolutions (e.g., Juslén & al., 2011; Sessa & al., 2012; Chang & al., 2018; Liang & al., 2021; Zhang & al., 2021; Zuo & al., 2022a,b). These findings further validate the detection and characterization of interspecific hybridization among ferns through phylogenetic analyses incorporating plastid genes (regions or plastomes) and nuclear gene sequences.…”

Dryopteris jinpingensis, a critically endangered diploid new species of Dryopteridaceae from Yunnan, China

“…Zuo, Jin Mei Lu & D.Z. Li we described earlier ( Zuo et al 2022b ). Through extensive morphological and phylogenetic studies, we have confirmed that this population represents a distinct species and accordingly we propose a new species within D. sect.…”

“…We extracted nine identical plastid regions from two newly obtained plastomes of the potentially new taxon, and added them to our previous combined plastid matrix (including 57 samples, Suppl. material 1 , 3 ) ( Zuo et al 2022a , b ). The second matrix consisted of 50 nuclear AK1 sequences, two of which were newly obtained and the others from previous studies ( Hori et al 2021 ; Zuo et al 2022a , b ; Wei et al 2024 ).…”

“…material 1 , 3 ) ( Zuo et al 2022a , b ). The second matrix consisted of 50 nuclear AK1 sequences, two of which were newly obtained and the others from previous studies ( Hori et al 2021 ; Zuo et al 2022a , b ; Wei et al 2024 ). The two matrices were aligned and corrected using MAFFT v.7.017 ( Katoh et al 2002 ) and Geneious 9.1.4 ( Kearse et al 2012 ), respectively.…”

“… Diclisodon (T. Moore) C. Chr. is of particular interest, as recent studies have revealed that many taxa in this section look similar in general appearance to their closely related known species, but actually exhibit significant difference in molecular data and close-up morphologies ( Zuo et al 2022a , b ).…”