Riccia fluitans
speciesAt a glance
Sources12 archives
Databases and archives Riccia fluitans's data was compiled from.
WikipediaWikimedia Foundation12 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility15 872 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI8 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics15 specimens↗
NCBIUS National Library of Medicinesequences↗
NPASSNat. Product Activity & Species Sourcecompounds↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
GoaTGenomes on a Tree · Sangergenome & karyotype↗
Paleobiology DatabasePBDB consortiumfossil record↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.
Riccia fluitans, the floating crystalwort, is an aquatic floating plant of the liverwort genus Riccia which is popular among aquarists as a retreat for young fry and is used in live-bearing tanks. It can be found floating in ponds, and often forms thick mats on and under the water surface. It normally grows quickly at the surface. When kept about two to three inches below an ordinary fluorescent bulb or in a pond exposed to full sunlight, it will form dense, bright green mats. Any single branch or antler bud can reproduce into a large colony if the plant is kept in proper conditions. It normally floats, but can also be attached to underwater objects such as logs and rocks. It can be attached with plastic mesh. Floating crystalwort is generally not compatible with duckweeds, as they cover the surface of the water quite rapidly, crowding the Riccia out. It is also easily overtaken by hair algae. The species epithet fluitans is Latin for floating.Archibald William Smith
No narrative description available for this taxon yet.
Habitat & environment1
Compounds documented for Riccia fluitans across natural-product and food-composition databases — not just the ~150 nutrients on a classic label ("nutritional dark matter").
Compound class profile5 classes
Documented compounds35 total
| Compound | Class | Amount | Source |
|---|---|---|---|
| (+)-Sabinene | present | NPASS | |
| (+)-Ursolic Acid | present | NPASS | |
| (-)-Caryophyllene | present | NPASS | |
| (-)-Germacrene A | present | NPASS | |
| 5,3',4'-Trihydroxy-6,7,5'-trimethoxyflavone | present | NPASS | |
| 5,4'-Dihidroxy-6,7,3',5'-tetramethoxyflavone | present | NPASS | |
| 5,6-Dihydroxy-2-(4-hydroxy-3,5-dimethoxyphenyl)-7-methoxychromen-4-one | present | NPASS | |
| 6-Hydroxyluteolin 7,3',4'-trimethyl ether | present | NPASS | |
| 6-Methylscutellarein | present | NPASS | |
| Alloaromadendrene | present | NPASS |
A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Riccia fluitans has left across the world's sequence archives.
At a glance
★ the standard DNA barcode for this group — the short region actually read to tell this species apart. The rest are extra genes sequenced along the way.
The complete instruction manual Riccia fluitans carries — its genome. We read it from three angles — how big it is, how the DNA is packed into chromosomes, and how completely it has been sequenced — and explain how to read each value as you go.
Genome sizehow big the whole instruction manual is
Measured in base pairs (bp) — the individual letters of DNA (human ≈ 3.2 Gb, a bacterium a few million). The chart places this genome on a logarithmic scale — each step to the right is ten times bigger — among reference organisms. Across species a bigger genome loosely tracks with larger cells, slower growth and lower-energy lifestyles (powered flight favours small genomes) — yet it does not imply more genes or a more advanced organism (the long-standing C-value paradox).
Chromosomes & ploidyhow the DNA is packaged
2n is the full chromosome count in a normal body cell; n is a gamete (egg or sperm), which carries half. Ploidy is how many complete chromosome sets each cell holds — 2× (diploid) is typical for animals, while higher levels (polyploidy) are common in plants. Click any value below to see the underlying records and sources.
n 83×CCDB · ipcn-api-dl · CCDB · book-ipcn67-71 · CCDB · Cave1958
n 71×CCDB · ipcn-api-dl
Sequencing statusassembly quality — how far to trust these numbers
Assembly level tells you how finished the sequence is — from fragmented contigs, through scaffolds, up to a full chromosome-level assembly. BUSCO % estimates completeness: the share of genes expected to be present that were actually found. These describe the data quality, not the organism.
How far back this lineage goes — and how we know. Everything here is measured in Ma, short for “mega-annum”: millions of years ago. The chart reads left to right like a calendar of the Earth, from the deep past on the left to today at the right edgetop to bottom like a core drilled through the Earth, from the deep past at the top down to today at the bottom.
At a glance
When this lineage existed
How to read this: the coloured strip along the bottomdown the left is the geological calendar — the standard epochs (Pliocene, Pleistocene…) every museum uses, shown so you can see which chapter of Earth's history this lineage lived in. This lineage is a young one, so the strip is zoomed in to epochs — the finer subdivisions inside a period. The orange marker is the DNA clock: DNA accumulates mutations at a roughly steady rate, so comparing this species' DNA with its relatives estimates when the lineage split off — independently of any fossil.
Record type15 872 records
Origin
Range
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Museum / Voucheredphysical evidence
Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Holding institutions82 of 151 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| Uniwersytet Wrocławskilocation not on record | 437 |
| Brussel, BE | 150 |
| Tilburg, NL | 108 |
| Knoxville, US | 99 |
| Clocation not on record | 93 |
| LDlocation not on record | 92 |
| Chicago, US | 85 |
| Madison, US | 81 |
| Uppsala, SE | 77 |
| IPA/SPlocation not on record | 68 |
| New Haven, US | 68 |
| Frankfurt am Main | 48 |
| Uniwersytet Marii Curie-Skłodowskiejlocation not on record | 43 |
| Oulu, FI | 39 |
| MeiseBGlocation not on record | 39 |
| Saint Louis, US | 37 |
| SLU Artdatabankenlocation not on record | 36 |
| PHlocation not on record | 33 |
| Ann Arbor, US | 33 |
| Trondheim, NO | 29 |
| Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record | 28 |
| Moscow State Universitylocation not on record | 26 |
| Natural History Museum Rotterdamlocation not on record | 26 |
| Toyama, JP | 24 |
| Staatliches Museum fuer Naturkunde Karlsruhe (State Museum of Natural History)location not on record | 22 |
| Osaka, JP | 20 |
| Olocation not on record | 20 |
| Durham, US | 20 |
| US | 18 |
| Museum Ludovicae Ulricae, Zoology Institute of the University of Uppsalalocation not on record | 17 |
| Tartu, EE | 16 |
| Vancouver, CA | 16 |
| Université Lavallocation not on record | 15 |
| Odawara, JP | 14 |
| College Park, US | 14 |
| Polar-Alpine Botanical Garden-Institutelocation not on record | 13 |
| Cincinnati, US | 13 |
| Minia, EG | 12 |
| Canberra, AU | 11 |
| Bourges, FR | 11 |
| BDBClocation not on record | 11 |
| Institute of the Industrial Ecology Problems of the North of Kola Science Center of the Russian Academy of Sciences.location not on record | 11 |
| Auckland, NZ | 10 |
| Pittsburg, US | 10 |
| St. Paul, US | 9 |
| Provincia di Livornolocation not on record | 9 |
| Helsinki, FI | 9 |
| Museo Entomologico de Leonlocation not on record | 9 |
| Oregon State Universitylocation not on record | 8 |
| McWane Science Centerlocation not on record | 8 |
| Christchurch, NZ | 8 |
| Mount Annan, AU | 8 |
| Durham, US | 8 |
| Wellington, NZ | 7 |
| Mexico City, MX | 7 |
| Chapel Hill, US | 7 |
| Philadelphia, US | 7 |
| Kuopio, FI | 7 |
| Museum of the Rockieslocation not on record | 7 |
| Société québécoise de bryologie (SQB)location not on record | 6 |
| Bando, JP | 6 |
| Portland, US | 6 |
| SZUlocation not on record | 6 |
| University of Stellenboschlocation not on record | 6 |
| Madrid, ES | 6 |
| Lincoln, US | 5 |
| DOI/NPS, Colonial National Historical Parklocation not on record | 5 |
| Oskarshamn, SE | 5 |
| MAlocation not on record | 5 |
| Montréal, CA | 5 |
| Tsukuba, JP | 4 |
| Stockholm, SE | 4 |
| Logan, US | 4 |
| BRNUlocation not on record | 4 |
| Turku, FI | 4 |
| Barcelona, ES | 4 |
| Hudson, US | 4 |
| Butler Universitylocation not on record | 3 |
| University of Gdansklocation not on record | 3 |
| National Institute of Biological Resourceslocation not on record | 3 |
| Green Bay, US | 3 |
| Salzburg, AT | 3 |
| Porvoo, FI | 3 |
| Chiba, JP | 3 |
| BioFokuslocation not on record | 3 |
| University of Southern Mississippilocation not on record | 3 |
| Museo della Bonifica di San Donà di Piavelocation not on record | 3 |
| Fayetteville, US | 3 |
| Corvallis, US | 3 |
| Rotorua, NZ | 3 |
| AADClocation not on record | 2 |
| Brisbane, AU | 2 |
| Blacksburg, US | 2 |
| Paris, FR | 2 |
| Yugra State University Biological Collectionlocation not on record | 2 |
| Lord Fairfax Community Collegelocation not on record | 2 |
| South Kensington, GB | 2 |
| VGBIlocation not on record | 2 |
| Musée des Confluenceslocation not on record | 2 |
| Davenport, US | 2 |
| Tempe, US | 2 |
| Universidade Federale do Rio Grande do Sullocation not on record | 2 |
| Natural History Museum, Tribhuvan Universitylocation not on record | 2 |
| Museo civico di Storia naturale Giacomo Doria di Genova | Giacomo Doria Natural History Museum in Genoalocation not on record | 2 |
| PClocation not on record | 1 |
| Parkville, AU | 1 |
| Wuhan, CN | 1 |
| WTUlocation not on record | 1 |
| GJOlocation not on record | 1 |
| Ypsilanti, US | 1 |
| AUAlocation not on record | 1 |
| Hiroshima Universitylocation not on record | 1 |
| Jyväskylä, FI | 1 |
| Miami, US | 1 |
| CBDClocation not on record | 1 |
| Albuquerque, US | 1 |
| Peking Universitylocation not on record | 1 |
| UNISANTAlocation not on record | 1 |
| Durban, ZA | 1 |
| Whitewater, US | 1 |
| Victoria, CA | 1 |
| NTNU University Museum, Department of Natural Historylocation not on record | 1 |
| Universidad de Málagalocation not on record | 1 |
| Royal Botanic Garden Edinburghlocation not on record | 1 |
| Northridge, US | 1 |
| Wlocation not on record | 1 |
| EL PASO, US | 1 |
| Fort Hayslocation not on record | 1 |
| John May Museum of Natural Historylocation not on record | 1 |
| GZUlocation not on record | 1 |
| Finnish Museum of Natural History, Botanical Museumlocation not on record | 1 |
| MHN-UPlocation not on record | 1 |
| Awka, NG | 1 |
| Laboratorio de Ictiologialocation not on record | 1 |
| Berlin, DE | 1 |
| NSW Dept of Planning, Industry and Environmentlocation not on record | 1 |
| Palmerston North, NZ | 1 |
| TROMlocation not on record | 1 |
| DULlocation not on record | 1 |
| V. N. Karazin National Universitylocation not on record | 1 |
| Empresa Pernambucana de Pesquisa Agropecuária, IPAlocation not on record | 1 |
| Cheney, US | 1 |
| Mus�e des Confluenceslocation not on record | 1 |
| Universidad de Oviedolocation not on record | 1 |
| Bronx, US | 1 |
| San Diego, US | 1 |
| Göteborg, SE | 1 |
| Millersville, US | 1 |
| CASlocation not on record | 1 |
| Claremont, US | 1 |
| Hobart, AU | 1 |
Cultivated / Captivenot free-living
A living individual in a botanical garden, zoo or nursery — cultivated or kept, not free-living.
Where the DNA of Riccia fluitans was picked up in samples of water, soil or air — nobody saw the organism, only its DNA left behind. A trace is a clue that the species was near, not a confirmed sighting.
Signal
Where its DNA was found
How strong is each trace?
Modelled climatemodelled
How to read this: each dot is one detection of this species' DNA in an environmental sample. The confidence meter weighs how many independent studies and places back up the signal — one detection in one study is a hint; many across several studies is solid. Records dated before 2008 (when eDNA methods began) are treated as likely mislabeled and left off the map.