This dataset contains the digitized treatments in Plazi based on the original journal article Dillenberger, Markus S., Kadereit, Joachim W. (2022): The distinction between Sagina apetala and S. micropetala (Caryophyllaceae: Sagineae), their phylogenetic relationships, and a note on the coastal origin of some widespread ruderals. Willdenowia 52 (1): 5-23, DOI: 10.3372/wi.52.52101, URL: https://doi.org/10.3372/wi.52.52101
Abstract: The distinction of the annual Sagina apetala and S. micropetala (= S. apetala subsp. erecta, S. filicaulis) is based mainly on the position of sepals in fruit and shape and colour of the sepals, but identification of the two species is difficult. A molecular phylogeny of material identified as S. apetala and S. micropetala as well as other species of the genus using two nuclear and two plastid markers showed that there exist two lineages that are sister to each other and can be unambiguously distinguished molecularly. Although many of the morphological characters used in the literature proved useful in distinguishing these two lineages, sepal indumentum is the most reliable character to discriminate between them in Germany. Whereas S. micropetala usually has glabrous sepals, the sepals of S. apetala usually are glandular-pubescent. The chromosome number of 2 n = 12 for S. micropetala, here determined for the first time, is identical to that of S. apetala, supporting the close relationship between the two species. Sagina apetala and S. micropetala are sister to S. maritima, an annual species from European coasts, which may imply a coastal origin of the two species. A brief review of the possible origin of other European ruderals from coastal relatives is provided.
","language":"eng","homepage":"https://tb.plazi.org/GgServer/summary/FFDCFF63FFFAFFE9FF8DEC49FF93FFF6","citation":{"text":"Dillenberger M S, Kadereit J W, felipe (2022). The distinction between Sagina apetala and S. micropetala (Caryophyllaceae: Sagineae), their phylogenetic relationships, and a note on the coastal origin of some widespread ruderals. Plazi.org taxonomic treatments database. Checklist dataset https://doi.org/10.15468/bj93pb accessed via GBIF.org on 2026-10-13.","citationProvidedBySource":false},"contactsCitation":[{"key":7160679,"abbreviatedName":"Dillenberger M S","firstName":"Markus S.","lastName":"Dillenberger","roles":["ORIGINATOR"],"userId":[]},{"key":7160680,"abbreviatedName":"Kadereit J W","firstName":"Joachim W.","lastName":"Kadereit","roles":["ORIGINATOR"],"userId":[]},{"key":7160683,"abbreviatedName":"felipe","lastName":"felipe","roles":["METADATA_AUTHOR"],"userId":[]}],"lockedForAutoUpdate":false,"createdBy":"plazi","modifiedBy":"crawler.gbif.org","created":"2025-07-23T19:05:33.024+00:00","modified":"2026-09-07T17:36:31.712+00:00","contacts":[{"key":7160679,"type":"ORIGINATOR","primary":true,"userId":[],"firstName":"Markus S.","lastName":"Dillenberger","position":[],"email":[],"phone":[],"homepage":[],"address":[],"createdBy":"crawler.gbif.org","modifiedBy":"crawler.gbif.org","created":"2026-09-07T17:36:31.679+00:00","modified":"2026-09-07T17:36:31.679+00:00"},{"key":7160680,"type":"ORIGINATOR","primary":false,"userId":[],"firstName":"Joachim W.","lastName":"Kadereit","position":[],"email":[],"phone":[],"homepage":[],"address":[],"createdBy":"crawler.gbif.org","modifiedBy":"crawler.gbif.org","created":"2026-09-07T17:36:31.681+00:00","modified":"2026-09-07T17:36:31.681+00:00"},{"key":7160681,"type":"ADMINISTRATIVE_POINT_OF_CONTACT","primary":true,"userId":[],"firstName":"Guido","lastName":"Sautter","position":[],"email":["gsautter@gmail.com"],"phone":[],"homepage":["http://plazi.org"],"address":[],"createdBy":"crawler.gbif.org","modifiedBy":"crawler.gbif.org","created":"2026-09-07T17:36:31.682+00:00","modified":"2026-09-07T17:36:31.682+00:00"},{"key":7160682,"type":"PUBLISHER","primary":false,"userId":[],"position":[],"email":["info@plazi.org"],"phone":[],"homepage":["https://plazi.org/"],"organization":"Plazi","address":[],"city":"Bern","country":"CH","createdBy":"crawler.gbif.org","modifiedBy":"crawler.gbif.org","created":"2026-09-07T17:36:31.684+00:00","modified":"2026-09-07T17:36:31.684+00:00"},{"key":7160683,"type":"METADATA_AUTHOR","primary":true,"userId":[],"lastName":"felipe","position":[],"email":[],"phone":[],"homepage":[],"organization":"Plazi","address":[],"createdBy":"crawler.gbif.org","modifiedBy":"crawler.gbif.org","created":"2026-09-07T17:36:31.685+00:00","modified":"2026-09-07T17:36:31.685+00:00"}],"endpoints":[{"key":1211980,"type":"COLDP","url":"https://tb.plazi.org/GgServer/colDp/FFDCFF63FFFAFFE9FF8DEC49FF93FFF6.zip","createdBy":"plazi","modifiedBy":"plazi","created":"2025-12-25T21:41:29.990+00:00","modified":"2025-12-25T21:41:29.990+00:00","machineTags":[]},{"key":1126998,"type":"DWC_ARCHIVE","url":"https://tb.plazi.org/GgServer/dwca/FFDCFF63FFFAFFE9FF8DEC49FF93FFF6.zip","createdBy":"plazi","modifiedBy":"plazi","created":"2025-07-23T19:05:33.306+00:00","modified":"2025-07-23T19:05:33.306+00:00","machineTags":[]}],"machineTags":[{"key":33078884,"namespace":"crawler.gbif.org","name":"crawl_attempt","value":"59","createdBy":"crawler.gbif.org","created":"2026-10-07T03:27:49.472+00:00"}],"tags":[],"identifiers":[{"key":445006,"type":"CLB_DATASET_KEY","identifier":"311261","createdBy":"clb-bot","created":"2025-07-23T19:14:02.990+00:00","primary":false},{"key":445003,"type":"UUID","identifier":"FFDCFF63FFFAFFE9FF8DEC49FF93FFF6","createdBy":"plazi","created":"2025-07-23T19:05:33.241+00:00","primary":false}],"comments":[],"bibliographicCitations":[],"curatorialUnits":[],"taxonomicCoverages":[],"geographicCoverages":[],"temporalCoverages":[],"keywordCollections":[{"keywords":["Sagina filicaulis","Sagineae","chromosome count","phylogeny","Sagina","Sagina maritima","Sagina apetala","Sagina micropetala","Caryophyllaceae"]}],"countryCoverage":[],"collections":[],"dataDescriptions":[],"dataLanguage":"eng","pubDate":"2022-02-10T00:00:00.000+00:00","license":"http://creativecommons.org/publicdomain/zero/1.0/legalcode","dwca":{"coreType":"http://rs.tdwg.org/dwc/terms/Taxon","extensions":["http://eol.org/schema/media/Document","http://rs.gbif.org/terms/1.0/Multimedia","http://rs.gbif.org/terms/1.0/Description","http://eol.org/schema/reference/Reference","http://rs.tdwg.org/dwc/terms/Occurrence"],"modified":"2026-10-07T03:28:01.504+00:00"},"approximateCounts":{"occurrenceCount":4,"nameUsageCount":36}}