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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Botanical Journal</journal-id><journal-title-group><journal-title xml:lang="en">Botanical Journal</journal-title><trans-title-group xml:lang="ru"><trans-title>Ботанический журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0006-8136</issn><issn publication-format="electronic">2658-6339</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">690849</article-id><article-id pub-id-type="doi">10.31857/S0006813625070052</article-id><article-id pub-id-type="edn">hmbhmi</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>COMMUNICATIONS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>СООБЩЕНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Anther formation in some species of genus Echeveria (Crassulaceae)</article-title><trans-title-group xml:lang="ru"><trans-title>Формирование пыльника у некоторых видов рода Echeveria (Crassulaceae)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Anisimova</surname><given-names>G. M.</given-names></name><name xml:lang="ru"><surname>Анисимова</surname><given-names>Г. М.</given-names></name></name-alternatives><email>galina0353@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shamrov</surname><given-names>I. I.</given-names></name><name xml:lang="ru"><surname>Шамров</surname><given-names>И. И.</given-names></name></name-alternatives><email>shamrov52@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Komarov Botanical Institute RAS</institution></aff><aff><institution xml:lang="ru">Ботанический институт им. В. Л. Комарова РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Herzen State Pedagogical University of Russia</institution></aff><aff><institution xml:lang="ru">Российский государственный педагогический университет им. А. И. Герцена</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-07-15" publication-format="electronic"><day>15</day><month>07</month><year>2025</year></pub-date><volume>110</volume><issue>7</issue><issue-title xml:lang="en">VOL 110, NO7 (2025)</issue-title><issue-title xml:lang="ru">ТОМ 110, №7 (2025)</issue-title><fpage>694</fpage><lpage>714</lpage><history><date date-type="received" iso-8601-date="2025-09-21"><day>21</day><month>09</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://ruspoj.com/0006-8136/article/view/690849">https://ruspoj.com/0006-8136/article/view/690849</self-uri><abstract xml:lang="en"><p>Echeveria species are characterized by both common and specific features in the anther structure. They, like most members of the Crassulaceae family, have basic characteristics associated with reproductive processes. These include: tetrasporangiate anther, parietal tapetum, predominantly tetrahedral tetrads of microspores, 2-celled and 3-colporate mature pollen grains. The studied species form different alliances: according to the anther shape – almost isobilateral (symmetrical) in E. gibbiflora and E. pulvinata and asymmetrical in E. puchella and E. pulidonis, which correlates with the contour of the microsporangium cavities; according to the shape of the layer of cells with thickened walls around the vascular bundle of the connective tissue – ring-shaped in E. gibbiflora and E. pulvinata and an oval in E. puchella and E. pulidonis; according to the tapetum structure – irregularly 2-layered in E. gibbiflora and E. pulidonis, 2-layered in E. pulvinata, and single-layered in E. puchellia; according to time of destruction of the walls between tapetum cells – at the stage of microspore tetrads in E. gibbiflora, E.puchella and E. pulvinata, of single microspores in E. pulidonis; according to the endothecium structure – cells begin to increase radially at the beginning of meiosis in E. pulvinata, at the tetrad stage in E. puchella, at the tetrad and early single microspore stages in E. gibbiflora and E. pulidonis. Some characters (symmetrical anthers with a 4-rayed connective tissue) reveal similarities with species of the genera Aeonium, Monanthes and Sedum. Based on the presence of fibrous thickenings in the cells (in addition to the typical layer based on the subepidermis of the microsporangium wall, additional layers appear in the connective tissue), Crassula joins the above-mentioned genera. The study revealed a mosaic distribution of anther structural traits in the genus Echeveria. It is likely that the studied species are characterized by a complex of multidirectional signs. The species form groupings depending on the analyzed properties, while each species does not have a set of traits inherent only to it. This conclusion does not contradict molecular genetic studies. Despite the similarity of some structural features, the species we studied belong to different clades of the “Echeveria group”.</p></abstract><trans-abstract xml:lang="ru"><p>Виды Echeveria характеризуются как общими, так и специфическими чертами в строении пыльника. Исследованные виды образуют различные альянсы: по форме пыльника – почти изобилатеральные (симметричные) у E. gibbiflora и E. pulvinata и асимметричные у E. puchella и E. pulidonis, что коррелирует с контуром полостей микроспорангиев; по форме слоя клеток с утолщенными оболочками вокруг проводящего пучка связника – в виде кольца у E. gibbiflora и E. pulvinata и овала у E. puchella и E. pulidonis; строению тапетума – у E. gibbiflora и E. pulidonis он нерегулярно 2-слойный, E. pulvinata 2-слойный, а у E. puchella однослойный; времени разрушения стенок между клетками тапетума – на стадии тетрад микроспор у E. gibbiflora, E.puchella и E. pulvinata, одиночных микроспор у E. pulidonis; строению эндотеция – клетки начинают увеличиваться в радиальном направлении в начале мейоза у E. pulvinata, на стадии тетрад у E. puchella, на стадиях тетрад и ранних одиночных микроспор у E. gibbiflora и E. pulidonis. По некоторым признакам (симметричные пыльники с 4-лучевым связником) выявляется сходство с видами родов Aeonium, Monanthes и Sedum. По наличию фиброзных утолщений в клетках (кроме типичного слоя на базе субэпидермы стенки микроспорангия возникают дополнительные слои в связнике) к вышеназванным родам добавляется Crassula. Исследование выявило мозаичное распределение структурных признаков пыльника в роде Echeveria. Виды образуют группировки в зависимости от анализируемых свойств, при этом каждый вид не обладает набором черт, присущих только ему. Этот вывод не противоречит молекулярно- генетическим исследованиям. При схожести некоторых особенностей строения пыльника изученные нами виды относятся к различным кладам “Echeveria group”.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Crassulaceae</kwd><kwd>Echeveria</kwd><kwd>E</kwd><kwd>gibbiflora</kwd><kwd>E</kwd><kwd>puchella</kwd><kwd>E</kwd><kwd>pulidonis</kwd><kwd>E</kwd><kwd>pulvinata</kwd><kwd>androecium</kwd><kwd>anther</kwd><kwd>microsporangium wall</kwd><kwd>Crassulaceae</kwd><kwd>Echeveria</kwd><kwd>E</kwd><kwd>gibbiflora</kwd><kwd>E</kwd><kwd>puchella</kwd><kwd>E</kwd><kwd>pulidonis</kwd><kwd>E pulvinata</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>андроцей</kwd><kwd>пыльник</kwd><kwd>стенка микроспорангия</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>[Anisimova] Анисимова Г.М. 2016. 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