Myrzagaliyeva Anar - Department of Biology Science, Astana International University, Kabanbay Batyr Avenue ۸. Astana, Kazakhstan & Kazakhstan, Astana, Al-Farabi avenue ۱۵/۱ Apartment ۱۴
Seilkhan Ainur - Abai University, Dostyk ۱۳, Almaty, Kazakhstan & Almaty City, Medeu district, Baisheva ۲۸
Takirova Manar - Department of Biology Science, Astana International University, Kabanbay batyr avenue ۸, Astana, Kazakhstan & Kazakhstan, Astana, Sauran street ۷A
Mukhtubayeva Saule - Department of Biology Science, Astana botanical garden, Orynbor avenue ۱۶. Astana, Kazakhstan. Kazakhstan, Astana, Mangilik el ۳۸, Apartment ۸۳
Moldir Zhakypzhan Zhumagul - Astana International University, Kabanbay Batyr ۸, Astana ۰۱۰۰۰۰, & Al-Farabi Kazakh National University. Al-Farabi Ave ۷۱, Almaty ۰۵۰۰۴۰, Kazakhstan, Astana, Syganak ۲, Apartament ۴۱۳
Nursafina Akmaral Zheksenbaevna - L.N. Gumilyov Eurasian National University, Astana, Kazakhstan & Kazakhstan, Astana, F.Ongarsynova ۱۰ – ۱۷۹
Bolgibayeva Akmaral Bekbolatovna - Astana International University, Kabanbay batyr avenue ۸. Astana, Kazakhstan & Kazakhstan, Ust-Kamenogorsk, Kazybek bi avenue ۷/۴ Apartment ۱۰۰
Makhambetov Murat Zharakovich - Zhubanov Aktobe Regional University, A.Moldagulova ave, ۳۴, Aktobe, Republuc of Kazakhstan

Morphometric techniques are crucial when studying rare plant species as they provide a comprehensive dataset on individual plants and the status of specific populations under various ecological conditions and different levels of human impact. Linaria cretacea, an endemic plant species, is listed as rare and can be found exclusively in the chalk hills in North-Western Kazakhstan (NWK). Over the span of ۲۰۲۰ to ۲۰۲۲, we conducted a study on four populations of this species located in the chalk hills in NWK. Through the process of inventorying sampling plots, we assessed the elevation range occupied by the species, while also identifying the age structure and population density. The results of our study provided further evidence of the limited population counts of Linaria cretacea, as reported previously. Additionally, we conducted an investigation into the biometric traits of virgin and generative Linaria cretacea individuals across different populations, including an analysis of their seed parameters. The morphometric parameters exhibited notable variations among the populations under investigation, with the exception of the seed measurements, which showed minimal to negligible variability. The species' coenopopulations are currently in a stable state, but the absence of adequate protection measures is a cause for concern. Therefore, it is crucial to undertake regular monitoring of their habitats and enhance environmental measures to safeguard their well-being.

Linaria cretacea, North-Western Kazakhstan, Sampling plots