Achene micromorphology of 26 Crepis L. (Asteraceae) taxa from Turkey with notes on its systematic and ecological significance

Taxonomic significance of cypsela morphology in tribe Cichoreae (Asteraceae) using light microscopy and scanning electron microscopy

“…The tribe is easily identifiable among the different tribes of Asteraceae by the presence of ligulate capitula and laticeferous vessels are monophyletic group and nested in subfamily Cichorioideae (Jana & Mukherjee, ). Achene features with morphological structures and pappus form are generally used for the taxonomy and limitation of various taxa in tribe Lactuceae (Aksu Kalmuk, Inceer, & Imamoglu, ). The Cypsela microcharacters including surface sculpture and pappus ultrastructure provide supplementary informative data for delimitation of the genera and identification of taxa in Lactuceae (Aksu Kalmuk et al, ; Karanović, Zorić, Zlatković, Boža, & Luković, ; Zhang et al, ).…”

“…Achene features with morphological structures and pappus form are generally used for the taxonomy and limitation of various taxa in tribe Lactuceae (Aksu Kalmuk, Inceer, & Imamoglu, ). The Cypsela microcharacters including surface sculpture and pappus ultrastructure provide supplementary informative data for delimitation of the genera and identification of taxa in Lactuceae (Aksu Kalmuk et al, ; Karanović, Zorić, Zlatković, Boža, & Luković, ; Zhang et al, ). The Cypsela that is one‐seeded fruit in tribe Lactuceae is absolutely necessary for identification of the genera and species and its morphology contributes the systematically most valuable data at all taxonomic levels (Inceer et al, ; Sennikov & Illarionova, ; Zhu et al, ).…”

Significance Important of Fruit Character for Some Asteraceae Species in Identification and Differentiation Level

“…In this study the studied species recorded 6 types of achene coat pattern sculpture; (1) Striate with line convex anticlinal wall and concave papillate Periclinal wall in Conyza linifolia or with concave smooth Periclinal wall in Pluchea dioscoridis. The characters of pappus are significantly differing in the studied species so, these pappus microcharacters can be used as additional data to support the morphological separation of these closely related species [21]. The persistence of pappus, color, length, number, connation at the base and the types are the characters of pappus for the studied species.…”

“…Cypsela or achene study has been utilized by many authors successfully for the delimitation of genera and species within the family Asteraceae from different parts of the world such as; [12] study macro and micromorphological characters of cypsela in seven species of tribe Anthemideae [13] study the achene characters of 11 species representing five genera of Anthemideae [14] study the data on morphological, histological and scanning electron microscopic for cypsela of 23 species belonging to nine sub-tribes of the tribe Heliantheae [15] study the structures of pappus in 52 species belong to 30 genera of four subfamilies of Asteraceae by using light and scanning electron microscope [16] study the cypsela morphology for five species of tribe Mutisieae from Pakistan [17] study achene macro and micromorphological characters for five species belong to Senecio jacobaea group [18] study the cypsela morphology of 30 taxa of Lactuca L., Cicerbita Wallr. and Prenanthes L. from Pakistan [19] study the achene wall anatomy and surface sculoturing of 12 taxa belong to genus Launaea Cass from Egypt [20] study the achene surfaces of 31 taxa belonging to the genus Centaurea L. from Turkey [21] study achene surface sculpturing and pappus ultrastructure of 26 Crepis taxa from Turkey and [22] study the achene macro-and micromorphologies characters for 22 taxa of the genus Cota from Turkey by using stereo and scanning electron microscope (SEM). Some studies on family Asteraceae growing on Saudi Arabia are done such as [23][24][25][26][27].…”

Micromorphology of endemic Centaurea glaberrima subsp. divergens (Asteraceae)

“…Micromorphological characters of leaves (Adedeji andJewoola 2008, Gavrilović et al 2019), involucral bracts (Robinson 2009, Gavrilović et al 2019, flowers (Torres and Galetto 2007, Erbar and Leins 2015, Erbar et al 2018) and especially those of cypselae (Dittrich 1968, Zhang et al 2013, Ghimire et al 2016, Kalmuk et al 2018, Gavrilović et al 2019, Ozcan and Akinci 2019 have provided useful information for the taxonomy and phylogeny of particular plant groups in Asteraceae. Centaurea taxa were poorly investigated from a micromorphological point of view.…”