Salix interiorRowlee

sandbar willow

WFO wfo-0000928909 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Salix interior, photographed by Yann Kemper
fig. a Yann Kemper, CC0 1.0 / 2022-04-30 / obs. 192562159
Salix interior, photographed by Brad Banner
fig. b Brad Banner, CC BY 4.0 / obs. 192667858
Salix interior, photographed by Yann Kemper
fig. c Yann Kemper, CC0 1.0 / obs. 192553746
Salix interior, photographed by Adam Kranz
fig. d Adam Kranz, CC0 1.0 / obs. 176516402
Salix interior, photographed by Henry "Nick" Robertson
fig. e Henry "Nick" Robertson, CC BY-SA 4.0 / obs. 164135478
Salix interior, photographed by Forest Botial-Jarvis
fig. f Forest Botial-Jarvis, CC BY 4.0 / obs. 160460762
Salix interior, photographed by Jason Swanson
fig. g Jason Swanson, CC0 1.0 / obs. 202058401
Salix interior, photographed by Mary Krieger
fig. h Mary Krieger, CC BY 4.0 / obs. 157908902

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 47 botanical countries

Regions where Salix interior is native: Tadzhikistan, Alaska, Alberta, Arkansas, British Columbia, Colorado, Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Manitoba, Maryland, Mexico Gulf, Mexico Northeast, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, New Brunswick, New Jersey, New Mexico, New York, North Dakota, Northwest Territories, Ohio, Oklahoma, Ontario, Pennsylvania, Québec, Saskatchewan, South Dakota, Tennessee, Texas, Vermont, Virginia, West Virginia, Wisconsin, Wyoming, Yukon TadzhikistanAlaskaAlbertaArkansasBritish ColumbiaColoradoConnecticutIllinoisIndianaIowaKansasKentuckyLouisianaMaineManitobaMarylandMexico GulfMexico NortheastMichiganMinnesotaMississippiMissouriMontanaNebraskaNew BrunswickNew JerseyNew MexicoNew YorkNorth DakotaNorthwest TerritoriesOhioOklahomaOntarioPennsylvaniaQuébecSaskatchewanSouth DakotaTennesseeTexasVermontVirginiaWest VirginiaWisconsinWyomingYukon DelawareDistrict of Columbia
Native distribution of Salix interior, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows. Regions too small to draw at this scale are marked with a dot.
RegionTDWG codeContinent
Alaska ASK NORTHERN AMERICA
Alberta ABT
Arkansas ARK
British Columbia BRC
Colorado COL
Connecticut CNT
Delaware DEL
District of Columbia WDC
Illinois ILL
Indiana INI
Iowa IOW
Kansas KAN
Kentucky KTY
Louisiana LOU
Maine MAI
Manitoba MAN
Maryland MRY
Mexico Gulf MXG
Mexico Northeast MXE
Michigan MIC
Minnesota MIN
Mississippi MSI
Missouri MSO
Montana MNT
Nebraska NEB
New Brunswick NBR
New Jersey NWJ
New Mexico NWM
New York NWY
North Dakota NDA
Northwest Territories NWT
Ohio OHI
Oklahoma OKL
Ontario ONT
Pennsylvania PEN
Québec QUE
Saskatchewan SAS
South Dakota SDA
Tennessee TEN
Texas TEX
Vermont VER
Virginia VRG
West Virginia WVA
Wisconsin WIS
Wyoming WYO
Yukon YUK
Tadzhikistan TZK ASIA-TEMPERATE

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Flowering 194 in flower of 718 examined

Peak flowering in Apr. Each bar is the share of Salix interior observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 194 of 718 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 4 months have fewer than 5 examined observations, so no proportion is drawn for them. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Also published as 19 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Salix exigua f. wheeleri (Rowlee) C.F.Reed
  • Salix exigua subsp. interior (Rowlee) Cronquist
  • Salix exigua var. exterior (Fernald) C.F.Reed
  • Salix exigua var. interior (Rowlee) Cronquist
  • Salix exigua var. pedicellata (Andersson) Cronquist
  • Salix exigua var. sericans (Nees) Dorn
  • Salix fluviatilis var. sericans (Nees) B.Boivin
  • Salix interior f. wheeleri (Rowlee) Rouleau
  • Salix interior var. exterior Fernald
  • Salix interior var. interior
  • Salix interior var. pedicellata (Andersson) C.R.Ball
  • Salix interior var. wheeleri Rowlee
  • Salix linearifolia Rydb.
  • Salix longifolia var. interior M.E.Jones
  • Salix longifolia var. pedicellata Andersson
  • Salix longifolia var. sericans Nees
  • Salix longifolia var. wheeleri (Rowlee) C.K.Schneid.
  • Salix rubra Richardson
  • Salix wheeleri (Rowlee) Rydb.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.