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Morphologically, the leaf was covered with sparsely scattered non\u2010glandular, multicellular hair on adaxial surface, while abaxial surface was reported with dense silvery furs. Leaf showed lamphystomatic nature bearing anomocytic stomata. Various other leaf constant values like vein islets number, vein termination number and palisade cell ratio were also observed and recorded as 4.36\u2009\u00b1\u20090.5, 3.36\u2009\u00b1\u20090.5, and 11.82\u2009\u00b1\u20092.04, respectively. Cross section of the stem showed typical dicot anatomy differentiated into a single epidermal layer followed by few rows of collenchyma cells, thin\u2010walled parenchyma cells followed by closed and collateral vascular bundles having prephloemic sheaths and a central pith. Light and scanning electron microscopy of the powdered drug revealed a variety of tissues and cells fragments having different measurements. Fluorescence analysis of the fine powder treated with different reagents revealed a variety of colors implying as a sign for the presence of various biochemical constituents. Highest and lowest percent extractive value was found in methanol and distilled water which were 29.10% and 9.80%, respectively. Qualitative phytochemical screening revealed the presence of various secondary metabolites like flavonoids, phenols, tannins, glycosides, phytosterols, glycosides, saponins, and coumarins, while quantitative phytochemical screening detected maximum quantity of flavonoids in chloroform followed by methanol and ethyl acetate. The aforementioned studies have been reported first time for the said species, which may be helpful for the standardization of the current taxon.<\/jats:p>","DOI":"10.1002\/jemt.24224","type":"journal-article","created":{"date-parts":[[2022,8,22]],"date-time":"2022-08-22T07:10:45Z","timestamp":1661152245000},"page":"3736-3754","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Pharmacognostic standardization of <scp><i>Xanthium spinosum<\/i> L<\/scp>. through scanning electron microscopy and analytical techniques"],"prefix":"10.1002","volume":"85","author":[{"family":"Shabana","sequence":"first","affiliation":[{"name":"Department of Botany Islamia College Peshawar  Peshawar Pakistan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9345-0865","authenticated-orcid":false,"family":"Barkatullah","sequence":"additional","affiliation":[{"name":"Department of Botany Islamia College Peshawar  Peshawar Pakistan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9458-3873","authenticated-orcid":false,"given":"Muhammad","family":"Nafees","sequence":"additional","affiliation":[{"name":"Department of Botany University of Peshawar  Peshawar Pakistan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2022,8,22]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jsps.2020.12.016"},{"issue":"3","key":"e_1_2_9_3_1","first-page":"105","article-title":"Preliminary phytochemical, antimicrobial and photochemical study of Calotropis gigantea leaf extract","volume":"9","author":"Ahmad W.","year":"2020","journal-title":"Current Chemistry Letters"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/jemt.23560"},{"issue":"3","key":"e_1_2_9_5_1","first-page":"165","article-title":"Pharmacognosy, phytochemistry, pharmacology and clinical applications of Taraxacum officinale","volume":"10","author":"Ajmire P. 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