Table 1 in Molecular and morphological evidence reveals a new fern species of Hymenasplenium (Aspleniaceae) from south and southwestern China

Table 1. Comparison of morphological characters to differentiate the new taxon (Hymenasplenium obtusidentatum) and the four described species in the H. excisum subclade. CharactersH. obtusidentatumH. excisumH. obscurumH. pseudobscurumH. tholiformisSize of lamina15-30 × 8-15 cm20-40 × 10-15 cm20-30 × 5-10 cm20-25 × 5-10 cm13-16 × 3-5 cmLamina basetruncatetruncate and widesttruncatetruncatetruncateRhizome size2-4 mm in diam.3-5 mm in diam.3-5 mm in diam.3-5 mm in diam.2 mm in diam.Stipe colornot shiny, reddish brown to dark brownshiny, dark purple to blacknot shiny, dull green to grayish greennot shiny, dull green to grayish greenshiny, black purplePinna shapetrapeziform to falcatetrapeziform to falcatetrapeziform to falcatetrapeziform to falcatetrapeziformSize of middle pinnae3.5-8 × 1-1.8 cm5-10 × 1.3-2 cm3.5-7 × 0.8-1.3 cm2.5-4 × 0.8-1.8 cm2.5-8 × 0.6-1 cmShape of pinna apexacute or rarely obtuseacute to obtuseobtuse to subacuteobtuse to subacuteroundPinnae marginal teethblunt or roundedsharpsharp to bluntsharp to bluntsharpNumber of basiscopic veins lacking4-6(3 or) 4-63-53-53-4Sori positioninframedial to medialmedialmedialmedial to supramedialmedialIndusiumsinglesinglesingledoublesingle