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An example collection, so you can see what this page does. Nothing added here is kept: leaving deletes it.
Lagarosiphon major; photograph (c) Samuele Papeschi, some rights reserved (CC BY) CC BY(c) Samuele Papeschi, some rights reserved (CC BY) · observed growing wild · 2026-07-25

Lagarosiphon major (Ridl.) Moss

Curly waterweed; Oxygen-weed; South African oxygen weed; Coarse Oxygen Weed

Hydrocharitaceae · Zimbabwe, Botswana +5

No habitat climate
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Lagarosiphon major, photograph (c) Mel Whiting, some rights reserved (CC BY)Lagarosiphon major, photograph (c) Samuele Papeschi, some rights reserved (CC BY)Lagarosiphon major, photograph (c) Samuele Papeschi, some rights reserved (CC BY)Lagarosiphon major, photograph (c) guywallbanks, some rights reserved (CC BY)Lagarosiphon major, photograph (c) Paolo Zucca, some rights reserved (CC BY)Lagarosiphon major, photograph (c) Duarte Frade, some rights reserved (CC BY) 66 photographs ›

Summary

Lagarosiphon major is a monocotic aquatic plant native to Southern Africa. Common names include African elodea, curly waterweed, oxygen weed and South African oxygen weed. It is used as freshwater aquarium plant.

Quoted from Wikipedia, "Lagarosiphon major", 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 1 distinct land cell of the climate grid holds an in-range record placed to within 10 km; three are needed for an envelope. 12 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.
NativeZimbabwe, Botswana, Cape Provinces, Lesotho, KwaZulu-Natal, Free State, Northern Provinces · introduced: Great Britain, Ireland, Austria, Belgium, Germany, Netherlands, Switzerland, France, Portugal, Bulgaria, Italy, New Zealand North, New Zealand South · 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 marker-27.339, 30.158 · in the densest population, 9 records (69% of those in range)
Kew's description“hydroperennial” · “subtropical” · 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, all openly licensed and shown on the map. 1078 records outside the WCVP native range not used. No climate across the range is derived for this species. 12 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 inside the densest 4° block 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

Lagarosiphon major, photograph 1did not loadLagarosiphon major, photograph 2did not loadLagarosiphon major, photograph 3did not loadLagarosiphon major, photograph 4did not loadLagarosiphon major, photograph 5did not loadLagarosiphon major, photograph 6did not load

Photographs: (c) Mel Whiting, some rights reserved (CC BY); (c) Samuele Papeschi, some rights reserved (CC BY) (2); (c) guywallbanks, some rights reserved (CC BY); (c) Paolo Zucca, some rights reserved (CC BY); (c) Duarte Frade, some rights reserved (CC BY).

Names & registers

Also known as Elodea crispa; Lagarosiphon muscoides var. major. (GBIF Backbone)

GBIFPOWOIPNIWFOWikidataWikipediaiNaturalist

The record

Family
Hydrocharitaceae
Described by
(Ridl.) Moss
Native to
Zimbabwe, Botswana, Cape Provinces +4
Wild records
13 in range · 13 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 2026-10-22
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; 33 records within 1 km of a botanic garden, herbarium or zoo left out (29 at a botanic garden or arboretum, 2 at a herbarium, 2 at a zoo; Wikidata's list)
Habitat climate climate nothing to reportasked 2026-10-22only 1 distinct land cell of the climate grid holds an in-range record placed to within 10 km; three are needed for an envelope
Wikidata wikidata answeredasked 2026-10-22
Wikipedia wikipedia answeredasked 2026-10-22
iNaturalist 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 2026-10-22
iNaturalist photographs, cultivated inat.photos.cultivated not asked
GBIF media gbif.media answeredasked 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 138 datasets via GBIF.org; each carries its own licence.

Cultifolio

Opening your plants…