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Rotala wallichii (Hook.f.) Koehne

Lythraceae · China Southeast, Taiwan +7

Cited as Kew's World Checklist cites it, Rotala wallichii (Hook.f.) Koehne: GBIF's backbone key for this page carries the name with another author, (Hook.fil.) Koehne.

No habitat climate
Photographs not checked iNaturalist was 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.
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About the genus · Rotala

Rotala Limited is a company established in 2005, which owns a number of bus operators in England. It was listed on the Alternative Investment Market from 2005 until 2024.

Quoted from Wikipedia, "Rotala", CC BY-SA 4.0.

Cultivation

Nothing derived: no habitat climate for this species.

Climate across the habitat

No habitat climate can be derived: Only 2 distinct land cells of the climate grid hold an in-range record placed to within 10 km; three are needed for an envelope. 11 of the 13 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

Native range as published by WCVP; the marker is where the records are densest and decides nothing.
Openly licensed records inside the range, framed on where they fall.
NativeChina Southeast, Taiwan, Bangladesh, India, Laos, Myanmar, Thailand, Vietnam, Malaya · 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).
Map marker24.79, 121.63 · in the densest population, 4 records (31% of those in range)
Kew's description“helophyte” · “wet tropical” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 13 georeferenced records inside the native range; the map shows only the 12 openly licensed ones, which alone would put the marker 65 km away. No climate across the range is derived for this species. 11 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.
How this section is made
The map marker: the openly licensed record nearest the middle of the densest 1° population of the 13 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Not checked. iNaturalist was skipped (not asked) when this page was built; GBIF's observation records with coordinates hold none. Not a statement that none exist.

Other Rotala 5 in the reference

Rotala hippuris Rotala hippuris Lythraceae Photo: CC BY-SA, Show_ryuRotala indica Rotala indica Indian rotala Photo: CC BY, Sandipan DasRotala macrandra Rotala macrandra Giant Red Rotala Photo: CC0, author not statedRotala ramosior Rotala ramosior Lowland toothcup Photo: CC BY, Anne ParkerRotala rotundifolia Rotala rotundifolia Roundleaf toothcup Photo: CC0, author not stated

Names & registers

Also known as Ammannia wallichii; Hydrolythrum wallichii. (GBIF Backbone)

GBIFPOWOIPNIWFOWikidataiNaturalist

The record

Family
Lythraceae
Described by
(Hook.f.) Koehne
Native to
China Southeast, Taiwan, Bangladesh +6
Wild records
13 in range · 12 open

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's key 3988412 is Rotala wallichii (Hook.fil.) Koehne; the page links Kew's Rotala wallichii (Hook.f.) Koehne, and the name is cited as Kew cites it
GBIF synonyms gbif.synonyms answeredasked 2026-10-22
GBIF common names gbif.vernacular answeredasked 2026-10-22names fetched 2026-10-22
WCVP native range wcvp.distribution answeredas of 2026-06-04
GBIF occurrence records gbif.occurrences answeredas of 2026-10-21GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21
Habitat climate climate nothing to reportasked 2026-10-22only 2 distinct land cells of the climate grid hold an in-range record placed to within 10 km; three are needed for an envelope
Wikidata wikidata answeredasked 2026-10-22
Wikipedia wikipedia nothing to reportasked 2026-10-22
iNaturalist photographs, wild inat.photos.wild nothing to reportasked 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 2026-10-22
iNaturalist photographs, cultivated inat.photos.cultivated not asked
GBIF media gbif.media nothing to reportasked 2026-10-22
Wikimedia Commons commons nothing to reportasked 2026-10-22
OpenAlex papers openalex not askednot yet asked for this reference; a later fill takes the papers from OpenAlex's snapshot

Every 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 5 datasets via GBIF.org; each carries its own licence.

Cultifolio

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