Cypsela micromorphology and anatomy in <i>Cirsium</i> sect. <i>Epitrachys</i> (Asteraceae, Carduoideae) and its taxonomic implications

Ozcan, Melahat

doi:10.1111/njb.01670

Cited by 15 publications

(18 citation statements)

References 25 publications

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“…In the present study, we used the PCA and Cluster analysis of Pollen Morphology of Solanaceous species. A similar analysis was done on leaf anatomy of many plants group (Ozcan 2017, De Luna et al 2017.…”

Section: Discussionmentioning

confidence: 94%

Pollen morphology of family Solanaceae and its taxonomic significance

Ashfaq

Ahmad

Zafar

et al. 2020

An. Acad. Bras. Ciênc.

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The pollen micro-morphology of family Solanaceae from the different phytogeographical region of Pakistan has been assessed. In this study, thirteen species belonging to ten genera of Solanaceae have been studied using light and scanning electron microscopy for both qualitative and quantitative features. Solanaceae is a eurypalynous family and a significant variation was observed in pollen size, shape, polarity and exine sculpturing. Examined plant species includes, Brugmansia

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Section: Discussionmentioning

confidence: 94%

Pollen morphology of family Solanaceae and its taxonomic significance

Ashfaq

Ahmad

Zafar

et al. 2020

An. Acad. Bras. Ciênc.

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“…The morphological characters taken into account for this study such as pappus characters under LM studies have previously yielded valuable information for certain genera (Angulo, Sosa, & Dematteis, 2015; Coşkunçelebi, Makbul, & Okur, 2016; Ghimire et al, 2018; Ozcan, 2017) and tribes of Compositae (Abid & Alam, 2011; Abid & Ali, 2010; Ayaz et al, 2020; Silva et al, 2018). In the present work, in addition to cypsela shape and size, the position, orientation, type of trichomes has proved to be an important taxonomic tool.…”

Section: Discussionmentioning

confidence: 99%

Cypsela diversity in some members of Compositae through LM study and its taxonomic significance

Sikder

Moktan

2021

Microscopy Res & Technique

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Compositae (Asteraceae), also known as the sunflower family has evolved to become the most diverse and advanced angiosperm family. However, with high diversity, taxonomic complexities also arise at several levels. A reliable tool in resolving such taxonomic conundrums in this family is the characteristic fruit of Compositae known as “cypsela.” While most of the previous cypsela‐based studies have focused on specific tribes and species of Compositae, in this study, we shift our focus to the genus level and seek a broader understanding of the taxonomic relationships that prevail in this family. In order to achieve this, we sampled 25 genera of Compositae and subjected them to qualitative and quantitative analysis to resolve them into groups based on the degree of similarity. This study was conducted by employing light microscopy techniques for gathering the qualitative and quantitative morphological data of the cypselae. The qualitative data were collected on six key morphological characteristics—shape, color, base, surface ornamentation, ribs, and pappus types for all the members. These data were used to yield an artificial dichotomous key to genera for the 25 members. The quantitative data on dimensions (length, breadth) of the entire cypsela as well as the pappus and ribs were subjected to principal component analysis, to understand the covariance among these variables. Hierarchical clustering followed by dendrogram construction was used to visualize the patterns of correlation within the samples and make taxonomic conclusions. The resulting dendrogram showed four closely related clades that consisted of 23 out of the 25 members whereas 2 members emerged as outgroups. The results of this study commensurate with DNA‐based resolution of the concerned Compositae members, hence highlighting the reliability and significance of both light microscopy and morphology‐based studies that seem to be fading away otherwise.

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“…Two complete seminal bodies were identified for this morphotype, of which the characteristics could correspond to the family Asteraceae Berchtold & J. Presl, 1820. These specimens are different from the other morphotypes by distinctive characteristics, as the narrowly oblong to oblanceolate contour typical of Asteraceae (Ozcan, 2017). The principal character can be associated with the presence of an ornamental structure (papus?)…”

Section: Seeds Angiosperm Groupmentioning

confidence: 99%

Pleistocene plants from Zarzal Formation, middle valley of the Cauca River Basin, Colombia

Rojas-Granada¹,

Cardozo-Rueda²,

Henao³

et al. 2021

Rev. bras. paleontol.

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We report macro and meso palaeobotanical records from the Zarzal Formation, in the Cauca River Depression, and the Quindío-Risaralda Basin between the Western and the Central Cordilleras of Colombia. The fossils correspond to leaves and seeds obtained from layers of mudstones, diatomites, and tuffaceous sandstones deposited in the inter-Andean valleys of Cauca and La Vieja rivers, separated by the Serranía Santa Bárbara ridge between the Valle del Cauca and Quindío departments. The sediments of the Pleistocene Zarzal Formation were deposited in a fluvial-lacustrine environment, with volcanic influence originated in the Central Cordillera to the east of the depositional area. The study here presented allowed the identification of thirteen morphotypes of leaf impressions grouped in six Angiosperm families: Poaceae?/Cyperaceae? and Araceae of the Monocots group, Melastomataceae, Fabaceae and Lauraceae belonging to the Eudicots group and one family of Lycopsida: Thelypteridaceae. On the other hand, very well-preserved silicified micro-seeds were grouped in eight morphotypes, belonging to the botanical groups Cyperaceae and Asteraceae. The fossils found allowed us to identify two types of plant associations that exhibit paleofloristic richness. In the Cauca River Basin, an autochthonous to parautocthonous plant association could correspond to a sub-Andean gallery forest, whilst in the La Vieja River Basin a parautocthonous plant association indicates a swamped floodplain. Keywords: paleoflora, leaves, seeds, Cauca River, La Vieja River, lacustrine deposit.

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Cypsela micromorphology and anatomy in Cirsium sect. Epitrachys (Asteraceae, Carduoideae) and its taxonomic implications

Cited by 15 publications

References 25 publications

Pollen morphology of family Solanaceae and its taxonomic significance

Pollen morphology of family Solanaceae and its taxonomic significance

Cypsela diversity in some members of Compositae through LM study and its taxonomic significance

Pleistocene plants from Zarzal Formation, middle valley of the Cauca River Basin, Colombia

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