Oxytropis campestris(L.) DC.

field crazyweedfield locoweed

WFO wfo-0000213908 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Oxytropis campestris, photographed by Shane Johnson
fig. a Shane Johnson, CC0 1.0 / 2022-06-03 / obs. 204517650

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.

The specimen a real sheet, in a real collection

Herbarium
The New York Botanical Garden
Accession
42464
Filed as
Oxytropis campestris var. gracilis (A.Nelson) Barneby
Det. by
D. L. Hazlett 1995-01-01
Collected
D. L. Hazlett 1995-07-18
Origin
US
The sheet
View the digitised specimen (CC BY 4.0)

A real pressed plant, in a real collection, under the accession number above. Not an illustration of one. The holding institution does not serve this sheet’s image to third parties, so there is no photograph here. The record is real and the link goes to it. Where we hold no openly licensed sheet for a species this section is simply absent, and where a sheet never recorded who determined it, that field stays empty rather than being filled in. Roughly half of all herbarium sheets never recorded a determiner, which is ordinary.

Native range 38 botanical countries

Regions where Oxytropis campestris is native: Japan, Kuril Is., Austria, Baltic States, Bulgaria, Czechia-Slovakia, France, Great Britain, Italy, NW. Balkan Pen., Poland, Romania, Spain, Sweden, Switzerland, Ukraine, Alaska, Alberta, British Columbia, Colorado, Idaho, Labrador, Maine, Manitoba, Minnesota, Montana, Newfoundland, North Dakota, Northwest Territories, Nunavut, Oregon, Québec, Saskatchewan, South Dakota, Washington, Wisconsin, Wyoming, Yukon JapanAustriaBaltic StatesBulgariaCzechia-SlovakiaFranceItalyNW. Balkan Pen.PolandRomaniaSpainSwedenSwitzerlandUkraineAlaskaAlbertaBritish ColumbiaColoradoIdahoLabradorMaineManitobaMinnesotaMontanaNewfoundlandNorth DakotaNorthwest TerritoriesNunavutOregonQuébecSaskatchewanSouth DakotaWashingtonWisconsinWyomingYukon
Native distribution of Oxytropis campestris, 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.
RegionTDWG codeContinent
Alaska ASK NORTHERN AMERICA
Alberta ABT
British Columbia BRC
Colorado COL
Idaho IDA
Labrador LAB
Maine MAI
Manitoba MAN
Minnesota MIN
Montana MNT
Newfoundland NFL
North Dakota NDA
Northwest Territories NWT
Nunavut NUN
Oregon ORE
Québec QUE
Saskatchewan SAS
South Dakota SDA
Washington WAS
Wisconsin WIS
Wyoming WYO
Yukon YUK
Austria AUT EUROPE
Baltic States BLT
Bulgaria BUL
Czechia-Slovakia CZE
France FRA
Great Britain GRB
Italy ITA
NW. Balkan Pen. YUG
Poland POL
Romania ROM
Spain SPA
Sweden SWE
Switzerland SWI
Ukraine UKR
Japan JAP ASIA-TEMPERATE
Kuril Is. KUR

Not drawn on the map: Kuril Is., Great Britain. We hold no public-domain boundary for these regions, so they are listed rather than guessed at.

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 688 in flower of 776 examined

Proportion of examined Oxytropis campestris in flower, by month
Month In flower Examined Share 95% interval
Jan 0 0 too few examined
Feb 0 0 too few examined
Mar 0 0 too few examined
Apr 0 1 too few examined
May 22 37 59% 43% to 74%
Jun 270 284 95% 92% to 97%
Jul 322 340 95% 92% to 97%
Aug 67 100 67% 57% to 75%
Sep 7 12 58% 32% to 81%
Oct 0 0 too few examined
Nov 0 2 too few examined
Dec 0 0 too few examined

Peak flowering in Jun. Each bar is the share of Oxytropis campestris 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. 688 of 776 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 7 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.

Where it actually grows measured, from 1,992 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -21.8 °C -14.0 °C -5.3 °C
Warmest month, mean daily high 12.6 °C 19.2 °C 24.8 °C
Annual rainfall 352 mm 667 mm 1,989 mm
Rainfall in the driest quarter 39 mm 80 mm 357 mm

It is found where winters are severely cold. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 1,992 research-grade observations of Oxytropis campestris that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one. Climate from CHELSA V2.1 (Karger et al. 2017); occurrences from 10.15468/dl.cgje2x.

Also published as 93 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.

  • Aragallus albertinus Greene
  • Aragallus alpicola Rydb.
  • Aragallus campestris (L.) Greene
  • Aragallus campestris var. caeruleus (W.D.J.Koch) A.Heller
  • Aragallus campestris var. johannensis (Fernald) J.M.Macoun
  • Aragallus campestris var. johannensis (Fernald) J.Macoun
  • Aragallus cervinus Greene
  • Aragallus cusickii (Greenm.) Barneby
  • Aragallus dispar A.Nelson
  • Aragallus gracilis A.Nelson
  • Aragallus johannensis A.Heller
  • Aragallus luteolus Greene
  • Aragallus macounii Greene
  • Aragallus melanodontus Greene
  • Aragallus monticola (A.Gray) Greene
  • Aragallus spicatus (Hook.) Rydb.
  • Aragallus varians Britton & Rydb.
  • Aragallus villosus Rydb.
  • Astragalus albertinus (Greene) Tidestr.
  • Astragalus alpicola (Rydb.) Tidestr.
  • Astragalus campestris L.
  • Astragalus campestris subsp. alpinus (Ten.) P.Fourn.
  • Astragalus campestris var. johannensis (Fernald) Tidestr.
  • Astragalus campestris var. sordidus P.Fourn.

and 69 more.

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.