Hemizonella is a genus of North American plants in the tribe Madieae within the family Asteraceae.Gray, Asa. 1874. Proceedings of the American Academy of Arts and Sciences 9: 189Flora of North America Vol. 21 Page 296, Hemizonella (A. Gray) A. Gray The only known species is Hemizonella minima (opposite-leaved tarweed), native to British Columbia, Washington, Oregon, California, Montana, Idaho, NevadaFlann, C (ed) 2009+ Global Compositae ChecklistHemizonella bonap The plant grows in many types of forest, scrub, and chaparral habitats, from mountains to deserts. It is found in the Sierra Nevada and Cascade Range, and Mojave Desert. Hemizonella minima is a small annual herb producing a thin, fuzzy stem up to about 15 cm in maximum height. The pointed, hairy leaves are no more than 2.5 cm long. The inflorescence produces one or more tiny flower heads which are oblong or shaped like tops on close inspection. Each is a few millimeters wide, enclosed in phyllaries studded with stalked resin glands, and tipped with minute yellowish florets. The fruit is an achene a few millimeters long with no pappus.
No narrative description available for this taxon yet.
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 Hemizonella minima has left across the world's sequence archives.
At a glance
DNA specimens9
Marker genes6
GenBank sequences5
eDNA detections4
Countries2
The DNA barcodea real sequence read deposited for this species
Hemizonella minima voucher CCDB-18323-B3 5.8S ribosomal RNA gene, partial sequence; internal transcribed spacer 2, complete sequence; and large subunit ribosomal RNA gene, partial sequence
Marker genes sequenced
★ 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.
★COI-5P★matK1★rbcL2★rbcLa★ITS2★ITS2
animal barcodeplant barcodefungal barcode
06Genome at a glanceCCDB
The complete instruction manualHemizonella minima 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.
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.
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy90% within 1 km
≤100 m 208≤1 km 33≤10 km 9>10 km 19
269 georeferenced · 123 without coordinates
Open the mapobservation + sensor392
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.
Coordinate accuracy68% within 1 km
≤100 m 30≤1 km 248≤10 km 128>10 km 5
411 georeferenced · 224 without coordinates
Open the institutions mapphysical evidence635
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
10Collections & institutions
Holding institutions36 of 52 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Corvallis, US
72
Arcata, US
68
DOI/NPS, Little Rock Central High School National Historic Sitelocation not on record
53
Pullman, US
46
Davis, US
35
Santa Barbara, US
28
Claremont, US
28
CASlocation not on record
25
WTUlocation not on record
20
Moscow, US
18
Vancouver, CA
12
San Luis Obispo, US
10
Ashland, US
10
San Diego, US
9
Canadian Department of Agriculturelocation not on record
8
Boise, US
6
Riverside, US
5
STNFlocation not on record
4
Bloomington, US
4
San Francisco, US
4
Northridge, US
3
US
3
Bronx, US
2
Truckee, US
2
Logan, US
2
Los Angeles, US
2
Caldwell, US
2
Wuzhou, CN
2
San Jose, US
2
Tacoma, US
2
SEFlocation not on record
1
Fort Bragg, US
1
Whitehorse, CA
1
ASUlocation not on record
1
University of British Columbia, Herbariumlocation not on record
1
KNFHClocation not on record
1
Henderson, US
1
Pocatello, US
1
Minia, EG
1
DOI/NPS, Greenbelt Parklocation not on record
1
Chongqing Museumlocation not on record
1
Brookings, US
1
Provo, US
1
Santa Cruz, US
1
Bangkok, TH
1
Research Collection of B. A. Bennettlocation not on record
1
University of Stellenboschlocation not on record
1
San Diego Natural History Museum, Herbariumlocation not on record
1
KNFYlocation not on record
1
Bend, US
1
Portland, US
1
Severin-McDaniel Insect Collectionlocation not on record
1
52 institutions · 509 of 635 vouchered records shown · 126 without an institution code
09Environmental DNA4 detections
Where the DNA of Hemizonella minima 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
Detections DNA found4
Studies independent surveys1
Countries2
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 4 detections have coordinates
Open the map2 countries0
Pine-oak woodland, Soil: Crouch coarse sandy…
How strong is each trace?
DNA read depthRead counts were not reported for this species — the map shows presence only, not how strong each trace was.
Modelled climatemodelled
−15°Ctemperature across detection sites+40°C
Temperature median16.0 °C 14.6–17.5
Seasonal swing summer↔winter23.4 °C
Max temp (day)22.6 °C 21.9–23.3
Min temp (night)9.40 °C 7.60–11.0
Precipitation80.4 mm/mo 23.8–83.4
Air humidity53.7 % 44.6–54.1
Moisture balance-63.5 mm/mo -141–-53.9
Vapour deficit940 Pa 862–948
Wind speed2.10 m/s 1.60–2.70
Cloud cover37.9 % 30.2–38.5
CHELSA 1981–2010, ~9 km grid, at location & month of 3 detection points · median with p10–p90 · reflects where sampling happened, not only the true niche
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.
WikipediaWikimedia Foundation2 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility1 027 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI4 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics9 specimens↗
NCBIUS National Library of Medicinesequences↗
GRIN TaxonomyUSDA-ARSdistribution & uses↗
Open Tree of LifeOpenTreephylogeny backbone↗
CCDBChromosome Counts DB · Tel Aviv U.genome & karyotype↗
PloiDBPloidy Databasegenome & karyotype
GLoBIGlobal Biotic Interactionsbiotic interactions↗