Data · collection · 2026
Cyathodium tetrasporum (Cyathodiaceae, Marchantiopsida), a new species of liverworts with spores permanently united in tetrads
Listed in GBIF
Description
This dataset contains the digitized treatments in Plazi based on the original journal article Xiang, You-Liang, Xu, Hao, Zhu, Rui-Liang (2026): Cyathodium tetrasporum (Cyathodiaceae, Marchantiopsida), a new species of liverworts with spores permanently united in tetrads. European Journal of Taxonomy 1034: 119-132, DOI: 10.5852/ejt.2026.1034.3145, URL: europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3145/14019 Abstract.
The genus Cyathodium (Marchantiophyta: Cyathodiaceae), a phylogenetically distinct lineage of cave-adapted liverworts, is characterized by a female involucre on the ventral surface of thalli and a distinctive green luminescence of thalli. Globally, 12 species of this genus are currently accepted, with a species diversity center in the Himalayas. During our taxonomic survey of the Chinese bryoflora, we found a remarkable undescribed species that exhibits spores permanently united in tetrads.
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Molecular evidence of chloroplast markers (psb A- trn H, rbc L and rps 4) resolved it as sister to Cyathodium tuberosum Kashyap. Here, this plant is described as Cyathodium tetrasporum sp. nov. Cyathodium becomes the third genus of the class Marchantiopsida with species characterized by spores permanently united in tetrads, after Riccia and Sphaerocarpos.
Detailed morphological descriptions, comparative analyses with congeners, SEM images of spores, and a provisional IUCN conservation assessment are provided.
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Where it is published
- GBIF dataset page gbif.org/dataset/7b61ec58-274a-4fd6-bde3-297bf383a096 ↗
landing page · from gbif
- DOI doi.org/10.15468/a4v6bs ↗
DOI / persistent id · from gbif
Documentation and papers
- Publisher page tb.plazi.org/GgServer/summary/FC39931FFFCAFFF3DE03FF86E55A4C7D ↗
documentation · from gbif
Catalogue records · 1
- GBIF API api.gbif.org/v1/dataset/7b61ec58-274a-4fd6-bde3-297bf383a096 ↗
metadata API · from gbif
Topics
- From keywords
- Life Sciences
- Inferred from text
- Evolutionary biology 68% · Image 65%
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| GBIF | 7b61ec58-274a-4fd6-bde3-297bf383a096 | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · gbif | connector:gbif@1.0.0 | |
| concepts[field].anzsrc:group:3104 | enrichment · gbif | taxonomy-embedding@1.1.0 | title+keywords+description (68%) |
| concepts[field].local:field:life-sciences | mapping · gbif | connector:gbif@1.0.0 | |
| concepts[modality].local:modality:image | enrichment · gbif | keyword-concept-rules@1.0.0 | title+description (65%) |
| created_date | source · gbif | connector:gbif@1.0.0 | |
| description | source · gbif | connector:gbif@1.0.0 | /description |
| license | source · gbif | connector:gbif@1.0.0 | |
| publication_date | source · gbif | connector:gbif@1.0.0 | |
| title | source · gbif | connector:gbif@1.0.0 | /title |
| updated_date | source · gbif | connector:gbif@1.0.0 |