Juglans × bixbyi Rehder
Bixby's walnut; Buartnut
A hybrid: J. cinerea × J. mandshurica var. cordiformis, the parents Kew's World Checklist states for it (WCVP, RBG Kew).
No habitat climate
31 photographs › Cultivation
Nothing derived: no habitat climate for this species.
Climate across the habitat
No habitat climate can be derived: Native range not verified: no WCVP distribution with native status for this name, so records cannot be told from cultivation and no habitat climate is derived. 8 of the 29 in-range records are placed to worse than 10 km, or to no stated accuracy and fewer than three decimals or by something other than a person's observation, and cannot place a climate cell, though they count for the map and its marker.
Natural habitat
No native range: WCVP lists no region where it is native.
Openly licensed records, not tested against the stated range, framed on where they fall.
NativeWCVP lists no region where it is native; the regions it does list are named here. · introduced: Ontario, New York, Vermont · regions are the level-3 units of the World Geographical Scheme for Recording Plant Distributions, as Kew's World Checklist records ranges, some under historical names such as Yugoslavia or Czechoslovakia (how).
Kew's description“tree” · “temperate” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedNo verified native range for this name: WCVP has no entry with native status, and a checklist that only reports presence cannot tell a wild record from a garden one. The map shows 6 openly licensed records of 29 untested against any range; no map marker or climate is derived from them, and no sheet is built from them. 8 in-range records are placed to worse than 10 km, or with no stated accuracy (admitted only as a person's observation to three decimals), and stay on the map but off the climate.
Photographs
Photographs: (c) Douglas Goldman, some rights reserved (CC BY-SA) (6).
Related
Other Juglans 14 in the reference
Juglans australis Argentine walnut Photo: CC BY, aacocucci
Juglans californica Southern California black walnut Photo: CC BY, klicklo
Juglans cinerea Butternut Photo: CC BY, treelogical
Juglans hindsii Northern California black walnut Photo: CC BY, Irina Mitine Juglans hopeiensis Hebei walnut 
Juglans jamaicensis West Indian walnut Photo: CC BY, J. L. Gómez-Hechavarría
Juglans major Arizona walnut Photo: CC BY, Jo Roberts
Juglans mandshurica Manchurian walnut Photo: CC BY, Maria Galkina
Juglans microcarpa Little walnut Photo: CC BY, Sam Kieschnick
Juglans mollis Mexican walnut Photo: CC BY, Cody Hinchliff
Juglans neotropica Andean walnut Photo: CC BY, GERMAN LEONEL SARMIENTO CRUZ
Juglans nigra Black walnut Photo: CC BY, Sandy Wolkenberg all 15 ›Names & registers
The record
Family
Juglandaceae
Described by
Rehder
Native to
not verified
Records
29 georeferenced · 6 open · range not tested
Every figure here is derived from public data by a stated rule and names its source; nothing about this species is written for its page by a person or by AI, apart from the marked, credited quotations. How →
Where this page came from built 2026-10-22
GBIF species record
gbif.species answeredasked 2026-10-22GBIF synonyms
gbif.synonyms answeredasked 2026-10-22GBIF common names
gbif.vernacular answeredasked 2026-10-22names fetched 2026-10-22WCVP native range
wcvp.distribution answeredas of 2026-06-04Kew's entry lists no native region, only 3 where it is introducedGBIF occurrence records
gbif.occurrences answeredas of 2026-10-21GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21; 1 record within 1 km of a botanic garden, herbarium or zoo left out (1 at a botanic garden or arboretum; Wikidata's list)Habitat climate
climate nothing to reportasked 2026-10-22native range not verified: no WCVP distribution with native status for this name, so records cannot be told from cultivation and no habitat climate is derivedWikidata
wikidata answeredasked 2026-10-22Wikipedia
wikipedia nothing to reportasked 2026-10-22iNaturalist photographs, wild
inat.photos.wild answeredasked 2026-10-22from iNaturalist's open data of 2026-09-27: research-grade observations with an open-licence photograph, the 24 whose photographs iNaturalist received last (the open data holds no votes); filled 2026-10-22iNaturalist photographs, cultivated
inat.photos.cultivated not askedGBIF media
gbif.media answeredasked 2026-10-22none of the photographs on this page is credited to GBIF: those shown are other sources', and GBIF's were the same photographs or were set aside by the photograph rulesOpenAlex papers
openalex not askednot yet asked for this reference; a later fill takes the papers from OpenAlex's snapshotEvery source is recorded as having answered, reported nothing, refused, failed, not been asked, or answered twice where one answer is taken (“not taken: two items answered”), and, for a source asked when this page was built, when: the figures are as the source held them that day; a source read from a file (Kew's World Checklist, a GBIF download) says "as of" the file's day instead; a row carried from an earlier build of the page names that build instead. Only “nothing to report” is ever shown as an absence. Records came from 4 datasets via GBIF.org; each carries its own licence.