Psathyrostachys juncea
(Fisch.) Nevski · speciesAt a glance
Sources13 archives
Databases and archives Psathyrostachys juncea's data was compiled from.
WikipediaWikimedia Foundation5 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility1 083 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI38 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics74 specimens↗
NCBIUS National Library of Medicinesequences↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
GoaTGenomes on a Tree · Sangergenome & karyotype↗
PloiDBPloidy Databasegenome & karyotype
WikidataWikimedia Foundationstructured facts↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.
Psathyrostachys juncea is a species of grass known by the common name Russian wildrye. It was formerly classified as Elymus junceus. It is native to Russia and China, and has been introduced to other parts of the world, such as Canada and the United States.Taylor, Jane E. (2005). Psathyrostachys juncea. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory. Retrieved January 18, 2012. Psathyrostachys juncea is a great source of food for grazing animals, as it has high nutrition value in its dense basal leaves, even in the late summer and autumn seasons. This species can grow and prosper in many harsh environments, making it an ideal candidate for improvement as it can grow in areas were farming is difficult. This species is a drought-resistant forage plant and can survive during the cool seasons. It is also a cross-pollinator and is self-sterile. This means that P. juncea cannot self-fertilize; it must find another plant of the same species with which to exchange gametes. Self-sterilization increases the genetic diversity of a species.
No narrative description available for this taxon yet.
Size & morphology6
Life cycle & reproduction30
Diet & foraging1
Habitat & environment28
Physiology & chemistry21
Uses & economy15
Other traits4
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 Psathyrostachys juncea 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 Psathyrostachys juncea 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.
2n 1422×GoaT · Kew Plant DNA C-values Database · CCDB · iapt · CCDB · fl-europaea +6
n 73×CCDB · ipcn-api-dl
diploid1×GoaT · Kew Plant DNA C-values Database
diploid inferred1×PloiDB · genus-scale
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 type1 083 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 institutions34 of 58 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
| Institution | Specimens |
|---|---|
| Moscow State Universitylocation not on record | 115 |
| Denver, US | 35 |
| Beijing, CN | 30 |
| DOI/NPS, Colonial National Historical Parklocation not on record | 24 |
| BRNUlocation not on record | 24 |
| Urumqi, CN | 16 |
| Bronx, US | 15 |
| Flagstaff, US | 14 |
| Logan, US | 14 |
| Musee des Dinosaures d'Esperaza (Aude)location not on record | 12 |
| Wuzhou, CN | 11 |
| GBS RAN - Glavny Botanichesky Sad Rossijskoj Akademii Nauklocation not on record | 10 |
| Albuquerque, US | 9 |
| Irkutsk State Universitylocation not on record | 9 |
| Kew, GB | 9 |
| Vancouver, CA | 8 |
| Yangling, CN | 5 |
| Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record | 5 |
| Orem, US | 5 |
| Chadron, US | 5 |
| CZE122location not on record | 4 |
| South Kensington, GB | 3 |
| ASUlocation not on record | 3 |
| Pittsburg, US | 3 |
| San Angelo, US | 3 |
| Saint Louis, US | 3 |
| Corvallis, US | 2 |
| Bloomington, US | 2 |
| Whitehorse, CA | 2 |
| WTUlocation not on record | 2 |
| Canadian Museum of Nature, National Herbarium of Canadalocation not on record | 2 |
| Frankfurt am Main | 2 |
| Eastern Nevada Landscape Coalitionlocation not on record | 2 |
| Samara National Research Universitylocation not on record | 2 |
| Moscow, US | 1 |
| Victoria, CA | 1 |
| Knoxville, US | 1 |
| Pullman, US | 1 |
| Agriculture and Agri-Food Canada, Vascular Plant Herbariumlocation not on record | 1 |
| Caldwell, US | 1 |
| Tempe, US | 1 |
| DOI/NPS, Greenbelt Parklocation not on record | 1 |
| BClocation not on record | 1 |
| Pocatello, US | 1 |
| University of Stellenboschlocation not on record | 1 |
| Spearfish, US | 1 |
| CASlocation not on record | 1 |
| Dresden, DE | 1 |
| Guizhou Forestry Schoollocation not on record | 1 |
| Herbarium of South China Botanical Gardenlocation not on record | 1 |
| Uniwersytet Opolskilocation not on record | 1 |
| University of Alberta Museumslocation not on record | 1 |
| St. Paul, US | 1 |
| Komarov Botanical Institutelocation not on record | 1 |
| Grand Junction, US | 1 |
| MAlocation not on record | 1 |
| Henderson, US | 1 |
| Boise, US | 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 Psathyrostachys juncea 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.