Citrus × depressa Hayata
A hybrid: C. reticulata × C. ryukyuensis, the parents Kew's World Checklist states for it (WCVP, RBG Kew).
English names not checked: Wikidata's common names were not read for this page.
Photographs not checked
iNaturalist and GBIF media were skipped (not asked) when this page was built. Not asked, or not answered, is not "none": nothing here claims there is none. Why the site says it this way.Summary
Citrus depressa (Citrus × depressa, formerly C. pectinifera, Okinawan: シークヮーサー/シークァーサー, romanized: shīkwāsā, Japanese: ヒラミレモン, romanized: hirami remon), in English sometimes called shikwasa, seaquarser, shiikuwasha, shequasar, Taiwan tangerine, sheer-quoarserre, Okinawa lime, flat lemon, hirami lemon, or thin-skinned flat lemon, is a small citrus fruit often harvested and used when green, rich in flavonoids and native to East Asia (Taiwan and Okinawa Islands, Japan).
Quoted from Wikipedia, "Citrus depressa", CC BY-SA 4.0.
About the genus · Citrus
Citrus is a genus of flowering trees and shrubs in the family Rutaceae. Plants in the genus produce citrus fruits, such as citrons, mandarins, and pomelos. Many important citrus crops have been developed through extensive hybridization, including oranges, lemons, grapefruits, and limes, all of which have many cultivars.
Quoted from Wikipedia, "Citrus", CC BY-SA 4.0.
Cultivation
Climate across the habitat
Natural habitat
This species has no GBIF key of its own. Its records are GBIF's under the key of the name Kew's World Checklist holds as this plant: 3832404 (Citrus ×depressa Hayata, 206 records). No name was matched to GBIF; the keys are read from Kew's synonymy. How.
Photographs
Related
Other Citrus 16 in the reference
Citrus × aurantiifolia Lime Photo: CC BY, Attila Oláh
Citrus × aurantium Sour orange Photo: CC BY, Emily E.M.
Citrus australasica Rutaceae Photo: CC BY-SA, Nadiatalent
Citrus australis Rutaceae Photo: CC BY-SA, Mark Marathon
Citrus cavaleriei Ichang papeda Photo: CC BY-SA, David J. Stang
Citrus garrawayae Rutaceae Photo: CC BY-SA, Steve Fitzgerald
Citrus glauca Rutaceae Photo: Public domain, Daderot
Citrus hystrix Kaffir lime Photo: CC BY, rjtizard
Citrus inodora Rutaceae Photo: CC BY, M. Fagg
Citrus japonica Kumquat Photo: CC BY, Yj
Citrus × limon Canton lemon Photo: CC BY, claire
Citrus maxima Shaddock Photo: CC BY, chiuluan all 17 ›Names & registers
Also known as Citrus nobilis var. tachibana; Citrus koozi; Citrus himekitsu; Citrus aurantium var. tachibana; Citrus nobilis var. ponki and 8 more. (WCVP, RBG Kew)
The record
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
kew.names answeredas of 2026-06-04Kew's entry Citrus × depressa Hayata (plant_name_id 2724072), read from Kew's names filegbif.species not askedGBIF's backbone holds no one accepted species of this name, and a name it holds only as another species' synonym is not taken for this one, so GBIF's records were not askedgbif.synonyms not askedGBIF's backbone holds no one accepted species of this name, and a name it holds only as another species' synonym is not taken for this one, so GBIF's records were not askedgbif.vernacular not askedGBIF's backbone holds no one accepted species of this name, and a name it holds only as another species' synonym is not taken for this one, so GBIF's records were not askedwcvp.distribution answeredas of 2026-06-04Kew's entry lists no native region, only 4 where it is introducedgbif.occurrences answeredas of 2026-10-21this species has no GBIF key of its own; its records are read under GBIF's keys for the names Kew's file holds as this plant, never by a name matched; GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21; 206 records of GBIF's key 3832404, Citrus ×depressa Hayata (Kew's file holds it as Citrus × depressa Hayata (accepted)): the GBIF download; 1 record within 1 km of a botanic garden, herbarium or zoo left out (1 at a botanic garden or arboretum; Wikidata's list)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 answeredasked 2026-10-22found by Kew's IPNI identifier 771887-1, POWO 771887-1wikipedia answeredasked 2026-10-22inat.photos.wild not askedinat.photos.cultivated not askedgbif.media not askedGBIF's backbone holds no one accepted species of this name, and a name it holds only as another species' synonym is not taken for this one, so GBIF's records were not askedcommons nothing to reportasked 2026-10-22openalex 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 19 datasets via GBIF.org; each carries its own licence.