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Zizania texana; photograph (c) Reid Hardin, some rights reserved (CC BY) CC BY(c) Reid Hardin, some rights reserved (CC BY) · observed growing wild · 2026-07-19

Zizania texana Hitchc.

Texas wild-rice; Texas zizania

Poaceae · Texas

No habitat climate
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Zizania texana, photograph author not stated, no rights reservedZizania texana, photograph author not stated, no rights reservedZizania texana, photograph author not stated, no rights reservedZizania texana, photograph author not stated, no rights reservedZizania texana, photograph author not stated, no rights reservedZizania texana, photograph (c) Reid Hardin, some rights reserved (CC BY) 74 photographs ›

Summary

Zizania texana is a rare species of grass known by the common name Texas wild rice. It is endemic to Texas, where it is found only on the upper San Marcos River in Hays County. It is threatened by the loss and degradation of its habitat. It is a federally listed endangered species of the United States.

Quoted from Wikipedia, "Zizania texana", 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. 181 of the 184 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.
NativeTexas · introduced: Myanmar · 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 marker29.889, -97.902 · in the densest population, 184 records (100% of those in range)
Kew's description“perennial” · “temperate” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 184 georeferenced records inside the native range; the map shows only the 49 openly licensed ones, which alone would put the marker 3 km away. No climate across the range is derived for this species. 181 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 184 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Zizania texana, photograph 1did not loadZizania texana, photograph 2did not loadZizania texana, photograph 3did not loadZizania texana, photograph 4did not loadZizania texana, photograph 5did not loadZizania texana, photograph 6did not load

Photographs: author not stated, no rights reserved · CC0 (5); (c) Reid Hardin, some rights reserved (CC BY).

Other Zizania 3 in the reference

Zizania aquatica Zizania aquatica Annual wildrice Photo: CC BY, stephenZizania latifolia Zizania latifolia Manchurian wildrice Photo: CC BY, Fyodor PudovikovZizania palustris Zizania palustris Northern wildrice Photo: CC BY, Lorna Grant

Names & registers

GBIFPOWOIPNIWFOWikidataWikipediaiNaturalist

The record

Family
Poaceae
Described by
Hitchc.
Native to
Texas
Wild records
184 in range · 49 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
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 4 datasets via GBIF.org; each carries its own licence.

Cultifolio

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