Taxonomic importance of spore morphology of selected taxa of Asplenium (Aspleniaceae) from Pakistan

Abstract

Taxonomic importance of spore morphology of seven taxa of genus Asplenium (Aspleniaceae) from Pakistan is illustrated with SEM. Spore morphology of the taxa were monolete with bilateral symmetry, distal and proximal view were ellipsoidal, spheroidal, equatorial view were hemicircular; perispore surface were alate, costate, costate-alate, with reticulate and tuberculate ornamentation.• Taxonomic importance of spore morphology of seven taxa of Asplenium (Aspleniaceae, polypodiales) from Pakistan.• Basionym, Synonyms with updated nomenclature.• Spores are monolete, distal and proximal view ellipsoidal, spheroidal, equatorial view hemicircular, perispore with alate, costate, reticulate, and tuberculate surface.• Habitat ecology with specimens examined from different areas of Pakistan and their worldwide general distribution.

Ethnomedicinal uses of the Ferns of Shishikoh Valley, District Chitral, Pakistan

“…Many workers contributed from Pakistan chiefly focused on Azad Jammu and Kashmir and different districts of Hazara and Malakand division (37)(38)(39)(40)(41)(42)(43)(44)(45)(46)(47)(48). Similar study of 66 Pteridophytes taxa belonged to 26 genera and 16 families with their traditional uses were reported from district Mansehra, Pakistan (49), another researcher (50) documented 25 Pteridophytes taxa belonged to 13 genera and 8 families from Maidan valley, district Lower Dir, Pakistan.…”

Characterizing Asplenium achalense (Aspleniaceae), a misunderstood species of Argentine flora: morphological, palynological and distributional evidences

“…The taxonomic importance of spore morphology and wall sculpture in lycophytes and ferns is generally well established; spore morphology using scanning electron microscopy is very useful in the taxonomy of complex ferns taxa (e.g. Braggins & Large, 1990;Vaganov et al, 2017;Adeonipekun et al, 2021;Gorrer et al, 2021;Morajkar et al, 2021;Irfan et al, 2022). Particularly, Asplenium spores are variable in size, shape and perispore morphology and ornamentation, being consistently monolete, frequently ellipsoidal, having prominent folds with alate, costate, cristate, echinate, and reticulate perispore which is usually fenestrated in areolae between the folds (Regalado & Sanchez, 2002;Ganem et al, 2013;Shah et al, 2020;Irfan et al, 2022).…”

“…Braggins & Large, 1990;Vaganov et al, 2017;Adeonipekun et al, 2021;Gorrer et al, 2021;Morajkar et al, 2021;Irfan et al, 2022). Particularly, Asplenium spores are variable in size, shape and perispore morphology and ornamentation, being consistently monolete, frequently ellipsoidal, having prominent folds with alate, costate, cristate, echinate, and reticulate perispore which is usually fenestrated in areolae between the folds (Regalado & Sanchez, 2002;Ganem et al, 2013;Shah et al, 2020;Irfan et al, 2022). Concerning spore morphology and wall sculpture of A. achalense and related species, Viane (1992) mentioned that A. achalense and A. serra share the same reticulate perispore pattern.…”

Micromorphology of fern spores as a tool in taxonomy of East-Central European species from the family Aspleniaceae (Polypodiopsida)

“…For polar and longitudinal diameters, the range of values was given (minimum to maximum). e basic source of biological terms was the Glossary of pollen and spore terminology (Punt et al, 2007), supplemented with terms used in works concerning spores of the genus Asplenium (Ferrarini et al, 1986;Irfan et al, 2022;Puttock & Quinn, 1980;Viane & van Cotthem, 1977;. Using the listed sources of morphological terms, we strived to maintain consistency and allow comparisons of our results with the cited publications (so wherever possible, we relied on the same sources as those indicated in the cited works).…”

“…Spore morphology in the Aspleniaceae was also investigated in many studies, which provide valuable data (e.g. Braggins & Large, 1990;Curto et al, 2012;Dong et al, 2012;Gabancho et al, 2006;Ganem et al, 2013;Irfan et al, 2022;Lashin, 2012;Lorscheitter et al, 2002;Morbelli & Giudice, 2005;Regalado & Sanchez, 2002;Shah et al, 2020;Tryon & Lugardon, 1991;. Most of the publications concern one or several species and provide morphological descriptions of spores.…”