Salix alaxensis is a species of flowering plant in the willow family known by the common names Alaska willow and feltleaf willow. It is native to northern North America, where it occurs throughout Alaska and northwestern Canada.Uchytil, Ronald J. 1991. Salix alaxensis. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory.
No narrative description available for this taxon yet.
⚠ sources differ — GIFT: 10.06 m · USDA: 4.88 m · TRY: 1.45 m
Plant height max2.5 m
Plant height min0.07 m
Life cycle & reproduction22
Coppice potentialNo
Deciduousnessdeciduous
Dispersal typewind
Flower conspicuousNo
Flowering endJul
Flowering startJun
Growth rate USDARapid
Life formshrub or tree
Life spanperennial
Lifespan categoryModerate
Lifespan years48 years
Propagated by bare rootYes
Propagated by bulbNo
Propagated by containerYes
Propagated by cormNo
Propagated by cuttingsYes
Propagated by seedNo
Propagated by sodNo
Propagated by sprigsNo
Propagated by tubersNo
Resprout abilityYes
Vegetative spread rateSlow
Habitat & environment22
Active growth periodSpring and Summer
Adapted to coarse textured soilsYes
Adapted to fine textured soilsYes
Adapted to medium textured soilsYes
BloatNone
Climatetemperate
Climberself-supporting
Foliage colorGreen
Foliage porosity summerModerate
Foliage porosity winterModerate
Foliage textureCoarse
Growth formtree
⚠ sources differ — GIFT: tree · TRY: Tree, Shrub
Growth form USDAMultiple Stem
Habitat GIFTmeadows, rivers, shores
Hedge toleranceNone
Known allelopathNo
Leaf retentionNo
Low growing grassNo
Root depth min16 in
Shape and orientationVase
Small grainNo
Woodinesswoody
Physiology & chemistry25
Anaerobic toleranceHigh
C:N ratioHigh
Caco3 toleranceLow
Cold stratification requiredNo
Drought toleranceNone
Fertility requirementMedium
Fire resistantNo
Fire toleranceHigh
Frost free days min70 days
Leaf dry-matter content (LDMC)389 mg/g
Leaf n17.82 mg/g
Leaf p2.1 mg/g
Moisture useHigh
Nitrogen fixation levelNone
Photosynthetic pathwayC3
Precipitation max60 in
Precipitation min20 in
Protein potentialLow
Salinity toleranceNone
Shade toleranceHigh
Soil pH max7.5 pH
Soil pH min5.5 pH
Specific leaf area (SLA)11.05 mm²/mg
Temperature min-43 °F
Wood density535 mg/cm³
Uses & economy14
Berry nut seed productNo
Christmas tree productNo
Commercial availabilityRoutinely Available
Fodder productNo
Lumber productNo
Naval store productNo
Nursery stock productYes
Palatable browse animalMedium
Palatable graze animalLow
Palatable humanNo
Post productNo
Pulpwood productNo
ToxicityNone
Veneer productNo
Other traits6
Fall conspicuousNo
Fruit seed conspicuousNo
Fruit seed persistenceNo
Height at 20yr4.88 m
Planting density max11 000 per acre
Planting density min2 700 per acre
05DNA & barcoding74 specimens
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 Salix alaxensis has left across the world's sequence archives.
At a glance
DNA specimens74
Marker genes12
GenBank sequences10
eDNA detections33
Countries4
The DNA barcodea real sequence read deposited for this species
★ 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 manualSalix alaxensis 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.
CCDB · ipcn-api-dl — Löve, A. & D. Löve. 1982. In: IOPB chromosome number reports LXXIV. Taxon 31: 120–126.
CCDB · ipcn-api-dl — Petrovsky, V. V. & P. G. ZHUKOVA. 1983. Chromosome numbers, morphology, ecology and taxonomy of willows of the Northeast of Asia. Bot. Zhurn. 68 (1): 29–38.
CCDB · book-ipcn67-71 — JOHNSON, A.W., & J.G. PACKER. 1968. Chromosome numbers in the flora of Ogotruk Creek, N.W. Alaska. Bot. Not. 121: 403-456.
CCDB · book-ipcn67-71 — ZHUKOVA, P.G. 1969. Chromosome number in certain plant species indigenous to the north-east of the USSR. IV. Bot. Zurn. 54: 1985-1990.
CCDB · book-ipcn67-71 — ZHUKOVA, P. G. 1967. Chromosome numbers in some species of plants of the north-eastern part of the USSR. II. (In Russian). Bot. Zhur. 52: 983-987.
CCDB · book-ipcn67-71 — SUDA, Y., & G.W. ARGUS. 1969. Chromosome numbers of some North American Arctic and Boreal Salix. Canad. J. Bot. 47: 859-862.
CCDB · eflora
CCDB · book-fedorov — IIIYKOBa 1967.
Ploidy records — measured levels and diploid/polyploid inferences · click for sources
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy31% within 1 km
≤100 m 200≤1 km 31≤10 km 186>10 km 320
737 georeferenced · 90 without coordinates
Open the mapobservation + sensor827
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 accuracy60% within 1 km
≤100 m 30≤1 km 124≤10 km 75>10 km 27
256 georeferenced · 451 without coordinates
Open the institutions mapphysical evidence707
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 institutions28 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
Museo civico La Terra e l'Uomo di Crocetta del Montellolocation not on record
138
Moscow State Universitylocation not on record
122
Chicago, US
34
University of Stellenboschlocation not on record
34
WTUlocation not on record
25
Vancouver, CA
23
University of Alberta Museumslocation not on record
16
Anchorage, US
15
Victoria, CA
14
TROMlocation not on record
12
Canadian Museum of Naturelocation not on record
11
DOI/NPS, Colonial National Historical Parklocation not on record
10
St. Paul, US
10
Madison, US
9
Yukon Universitylocation not on record
8
Chongqing Museumlocation not on record
8
BRNUlocation not on record
7
Philadelphia, US
7
Trondheim, NO
6
Montréal, CA
6
WINlocation not on record
6
Olocation not on record
6
Wlocation not on record
5
DOI/FWS, Kenai National Wildlife Refugelocation not on record
4
West Virginia Wesleyan Collegelocation not on record
4
GBS RAN - Glavny Botanichesky Sad Rossijskoj Akademii Nauklocation not on record
4
NTNU University Museum, Department of Natural Historylocation not on record
3
US
3
PRClocation not on record
3
University of Manitoba Herbariumlocation not on record
3
Bronx, US
3
Fredericksburg, US
3
Stockholm, SE
2
Moscow, US
2
Flagstaff, US
2
GB
2
University of British Columbialocation not on record
2
Vitoria, ES
2
Kew, GB
2
Wuzhou, CN
2
Universite de Montreal, L'Herbier Marie-Victorinlocation not on record
2
Paris, FR
2
MeiseBGlocation not on record
2
Trois-Rivières, CA
1
Uniwersytet Śląski w Katowicachlocation not on record
1
Université Lavallocation not on record
1
Ypsilanti, US
1
DOI/NPS, Greenbelt Parklocation not on record
1
South Kensington, GB
1
Northridge, US
1
Orem, US
1
Institute of the biological problems of the North FEB RASlocation not on record
1
Canadian Museum of Nature, National Herbarium of Canadalocation not on record
1
Saint Louis, US
1
Davis, US
1
Tromso University Museumlocation not on record
1
Beijing, CN
1
Churchill Northern Studies Centrelocation not on record
1
58 institutions · 599 of 707 vouchered records shown · 102 without an institution code
09Environmental DNA33 detections
Where the DNA of Salix alaxensis 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 found33
Studies independent surveys1
Countries4
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 33 detections have coordinates
Open the map4 countries0
Vannkant, en rekke med 4-5 m høye busker. N…
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 median11.1 °C 9.80–15.7
Seasonal swing summer↔winter37.4 °C
Max temp (day)15.1 °C 12.4–19.8
Min temp (night)7.40 °C 5.90–11.6
Precipitation76.0 mm/mo 46.7–130
Air humidity58.0 % 54.4–63.4
Moisture balance-20.5 mm/mo
Vapour deficit546 Pa 442–825
Wind speed3.10 m/s
Cloud cover50.3 % 43.3–59.4
CHELSA 1981–2010, ~9 km grid, at location & month of 30 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 Foundation5 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility1 537 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI33 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↗
giftgenome & karyotype
PloiDBPloidy Databasegenome & karyotype
WikidataWikimedia Foundationstructured facts↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗