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Gaudium coriaceum; photograph Donald Hobern from Copenhagen, Denmark, CC BY 2.0, via Wikimedia Commons CC BYDonald Hobern from Copenhagen, Denmark, CC BY 2.0, via Wikimedia Commons

Gaudium coriaceum (F.Muell.) Peter G.Wilson

Myrtaceae · New South Wales, South Australia +1

English names not checked: Wikidata's common names were not read for this page.

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Gaudium coriaceum, photograph Donald Hobern from Copenhagen, Denmark, CC BY 2.0, via Wikimedia CommonsGaudium coriaceum, photograph David Sando, CC BY 3.0, via Wikimedia CommonsGaudium coriaceum, photograph David Sando, CC BY 3.0, via Wikimedia Commons 4 photographs ›
Habitat figures
Cold floor (1 night in 100)
1.3°C
Record low -2.6 °C in 44 years, at a typical spot in the range NASA POWER
Warmest month, mean daily high
30°C
Jan and Feb at the habitat CHELSA
Rain a year (median across the range)
335mm
8 months of 25 mm or more in the median year CHELSA
Open-sky light
14–50DLI
Lowest to highest month (DLI) CHELSA
The year in your months, northern hemisphere
  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec
Wet winters: the rain comes November to May (May to November at the habitat), read as a winter growing season. rain rule, CHELSA
Northern hemisphere unless you set your site. The chart is in the habitat's months.

Summary

Gaudium coriaceum, commonly known as green tea-tree or mallee teatree, is a shrub species that is endemic to south-eastern and south-central Australia. It has smooth bark on the younger stems, elliptic to narrow egg-shaped leaves, white flowers and woody fruit. The usual habitat is mallee on sand dunes.

Quoted from Wikipedia, "Gaudium coriaceum", CC BY-SA 4.0.

Cultivation

Seasons

The rain rule reads a winter growing season: 70% of the median year's rain (240 mm of 336 mm) falls in May to November, cooler than the year (wet-season mean 13.1 °C against a yearly mean of 16.2 °C). Months are the habitat's, southern hemisphere; shifted six months for a northern-hemisphere collection: November to May.

Rain

336 mm in the median year at the habitat, 240 mm of it May to November. Wettest month August at 41 mm, driest month January at 16 mm. Across the grid cells of the range the year's total runs 276 mm to 430 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 335 mm, is the year's rain at the top of the page; the 336 mm here is the median year's, the twelve monthly medians added, which the rain rule reads. Habitat calendar, southern hemisphere; median year across the grid cells of the range, CHELSA.

Light

Open sky over the habitat: 14 to 50 mol/m²/day across the year (daily light integral, median year across the grid cells of the range, CHELSA; the lowest 10th-percentile month across the cells is 13, the highest 90th-percentile month 51).

Warmth and air
Temperature

Coldest: the 1st-percentile night over 44 years at a typical spot in the range is 1.3 °C, the absolute minimum -2.6 °C, 27 frost nights in 44 years (NASA POWER daily minima). Warmest: the 99th-percentile day is 43.3 °C. Monthly means: the coldest month's mean nightly low 5.9 °C in July (across the grid cells of the range 5.5 °C to 7.3 °C), the warmest month's mean daily high 29.5 °C in January and February (median year across the grid cells of the range, CHELSA). Cold floor: 1.3 °C, which is the 1st-percentile night over 44 years at a typical spot in the range (NASA POWER).

Humidity

Relative humidity at the habitat: 49 to 60% across the year (monthly means, median year across the grid cells of the range, CHELSA). A figure about the air, saying nothing about how the plant takes water.

How this section is made

Each card states this species' habitat figures with their sources, and what two fixed rules read from them; nothing here says what the plant does, wants or tolerates. The rules · the terms.

Seasons. Read from the median year of CHELSA monthly rainfall and mean temperature across the grid cells of the range: the rain rule takes the smallest set of months carrying 70% of the rain and calls it winter when its mean is more than half a degree below the year's, summer when more than that above, and neither in between; the temperature rule, used only under 120 mm, names the cooler six months when they are at least a degree cooler than the other six. Months are shifted for the other hemisphere only where the temperature curve moves 4 °C or more and the habitat lies 10° or more from the equator. A reading of the curves, not an observation of the plant.

Rain. CHELSA monthly precipitation, median year across the grid cells of the range. The rain that falls where the species is recorded; nothing about how the plant takes water.

Light. CHELSA shortwave radiation at each envelope cell, a daily-mean flux taken to a daily total and converted at 2.07 mol of PAR per MJ. The sky over the habitat, measured; what reaches a plant under a rock, a shrub or a shade cloth is not.

Temperature. NASA POWER daily minima and maxima over 44 years at a typical spot in the range, lapse-corrected +10 m to its elevation; CHELSA monthly means, median year across the grid cells of the range. The cold floor is the 1st-percentile night named in its sentence. Not a measured survival limit for any plant in a pot.

Humidity. CHELSA relative humidity, median year across the grid cells of the range.

Climate across the habitat

Habitat months, southern hemisphere

Habitat climate of Gaudium coriaceum through the yearWarmest months January and February, mean daily high 30 °C; coldest month July, mean nightly low 5.9 °C; 336 mm of rain in the median year (the twelve monthly medians added). Medians across the range, from CHELSA; the extremes at the edge from NASA POWER. Habitat months, southern hemisphere.-10°0°10°20°30°40°50°frost43.3° 99th-percentile day, NASA POWER-2.6° lowest night in 44 years, NASA POWER°C · day and nightcold quarter0102030405060mm rainDLI 14–50RH 49–60%JanFebMarAprMayJunJulAugSepOctNovDec
day night rain medians and 10th–90th percentile across 871 habitat cells, CHELSA cold quarter: the three months around the coldest month's mean nightly low extremes over 44 years at a typical spot in the range, from NASA POWER, marked at the edge, in no month DLI, mol/m²/dayRH %each on its own scale
Figures by month
JanFebMarAprMayJunJulAugSepOctNovDec
Day °C30 / 27–3230 / 27–3126 / 25–2822 / 21–2418 / 17–1915 / 14–1614 / 13–1515 / 15–1718 / 17–2022 / 20–2425 / 23–2727 / 25–29
Night °C16 / 15–1816 / 15–1814 / 13–1611 / 11–139 / 9–117 / 6–86 / 6–77 / 6–88 / 8–1010 / 9–1213 / 12–1515 / 14–16
Rain mm16 / 13–1917 / 14–2017 / 14–2120 / 15–2931 / 24–4140 / 28–5839 / 29–5741 / 27–6034 / 25–4629 / 23–3526 / 20–3026 / 22–30
DLI50 / 49–5145 / 44–4636 / 35–3726 / 24–2818 / 16–2014 / 13–1615 / 14–1721 / 20–2229 / 27–3138 / 37–4045 / 44–4648 / 47–50
RH %49 / 46–5449 / 47–5452 / 49–5554 / 51–5557 / 55–5860 / 58–6159 / 57–6157 / 54–5855 / 53–5753 / 50–5551 / 48–5450 / 47–54
How this section is made
Each figure is the median across the 871 grid cells holding the 1666 in-range records, with the 10th–90th percentile span across those cells after the slash where it differs. A dash is a month one or more of those cells has no figure for in the grid (a variable CHELSA does not carry there), so no median is taken rather than one over fewer cells. Extremes and elevation were read at a typical spot in the range, cell 2471:6454 (-33.575, 142.725). Over 44 years there: absolute minimum -2.6 °C, 1st-percentile night 1.3 °C, 99th-percentile day 43.3 °C. Normals: CHELSA V2.1 1981–2010 climatology, 0.05° cells (each the mean of ~36 1 km pixels). Across the range: median and 10th–90th percentile of each month across the 871 distinct grid cells holding 1666 of the 1666 in-range records; extremes and elevation at the typical cell 2471:6454 (its coldest month's mean nightly low nearest the median across cells); its position is the cell centre. Extremes: NASA POWER (MERRA-2) daily 1981–2024, cell -33.50_142.500, lapse-corrected +10 m at 6.5 °C/km. Elevation: ETOPO 2022, 78 m (cell mean).

Natural habitat

Native range as published by WCVP; the marker is where the records are densest and decides nothing: the climate was read across the cells of the in-range records placed well enough to read one, not at the marker.
Openly licensed records inside the range, framed on where they fall.

This species has no GBIF key of its own. Its records are GBIF's under the keys of the names Kew's World Checklist holds as this plant: 3181752 (Leptospermum coriaceum (Miq.) Cheel, 2000 records), 8616177 (Fabricia coriacea F.Muell., 1856, 0 records). No name was matched to GBIF; the keys are read from Kew's synonymy. How.

NativeNew South Wales, South Australia, Victoria · 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-35.333, 140.517 · in the densest population, 1068 records (63% of those in range)
Kew's description“shrub” · “subtropical” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 1705 georeferenced records inside the native range; the climate across the range on the 1666 of them placed to within 10 km, all openly licensed and shown on the map. 39 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.
Other GBIF keysRecords also from GBIF's key 3181752 (Leptospermum coriaceum (Miq.) Cheel): Kew's file holds it as Leptospermum coriaceum (F.Muell.) Cheel (synonym under Gaudium coriaceum (F.Muell.) Peter G.Wilson); 2,000 records, from GBIF's download.Records also from GBIF's key 8616177 (Fabricia coriacea F.Muell., 1856): Kew's file holds it as Fabricia coriacea F.Muell. (synonym under Gaudium coriaceum (F.Muell.) Peter G.Wilson); 0 records, from GBIF's search API on the day of the build.
How this section is made
The map marker: the openly licensed record nearest the middle of the densest 1° population of the 1705 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Gaudium coriaceum, photograph 1did not loadGaudium coriaceum, photograph 2did not loadGaudium coriaceum, photograph 3did not load

Photographs: Donald Hobern from Copenhagen, Denmark, CC BY 2.0, via Wikimedia Commons; David Sando, CC BY 3.0, via Wikimedia Commons (2).

Similar habitat climate The 6 nearest by mean daily high, mean nightly low and rain, month by month. How.

Olearia lepidophylla Olearia lepidophylla Clubmoss daisy-bush Photo: CC BY, Bryce Watts-ParkerEucalyptus calycogona Eucalyptus calycogona Square-fruited Mallee Photo: CC0, author not statedCallitris verrucosa Callitris verrucosa Mallee-pine Photo: CC BY, krumpiankingEucalyptus leptophylla Eucalyptus leptophylla Myrtaceae Photo: CC BY, Donald Hobern from Copenhagen, DenmarkAcacia brachybotrya Acacia brachybotrya Gray mulga Photo: CC BY, Thomas MesaglioProstanthera aspalathoides Prostanthera aspalathoides Scarlet mint-bush Photo: CC BY, Kym Nicolson

Other Gaudium 4 in the reference

Gaudium glaucescens Myrtaceae Gaudium microcarpum Myrtaceae Gaudium myrsinoides Gaudium myrsinoides Myrtaceae Photo: CC BY, Paul Asman and Jill LenobleGaudium trinervium Gaudium trinervium Myrtaceae Photo: CC BY, John Tann from Sydney, Australia

Names & registers

Also known as Fabricia coriacea; Leptospermum coriaceum; Leptospermum laevigatum var. minus. (WCVP, RBG Kew)

IPNIPOWOWikipedia

The record

Family
Myrtaceae
Described by
(F.Muell.) Peter G.Wilson
Native to
New South Wales, South Australia, Victoria
Wild records
1705 in range · 1705 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
Kew's names (WCVP) kew.names answeredas of 2026-06-04Kew's entry Gaudium coriaceum (F.Muell.) Peter G.Wilson (plant_name_id 3304651), read from Kew's names file
GBIF species record gbif.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 asked
GBIF synonyms gbif.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 asked
GBIF common names gbif.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 asked
WCVP native range wcvp.distribution answeredas of 2026-06-04
GBIF occurrence records gbif.occurrences answeredasked 2026-10-22this 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; 2000 records of GBIF's key 3181752, Leptospermum coriaceum (Miq.) Cheel (Kew's file holds it as Leptospermum coriaceum (F.Muell.) Cheel (synonym under Gaudium coriaceum (F.Muell.) Peter G.Wilson)): the GBIF download; 0 records of GBIF's key 8616177, Fabricia coriacea F.Muell., 1856 (Kew's file holds it as Fabricia coriacea F.Muell. (synonym under Gaudium coriaceum (F.Muell.) Peter G.Wilson)): GBIF occurrence search API
Habitat climate climate answeredasked 2026-10-22
Daily extremes (NASA POWER) climate.extremes answeredasked 2026-10-22NASA POWER (MERRA-2) daily 1981–2024, cell -33.50_142.500, lapse-corrected +10 m at 6.5 °C/km
Wikidata wikidata nothing to reportasked 2026-10-22no item carries Kew's IPNI identifier 77327757-1, POWO 77327757-1
Wikipedia wikipedia answeredasked 2026-10-22
iNaturalist taxon inat.taxon not asked
iNaturalist photographs, wild inat.photos.wild not asked
iNaturalist photographs, cultivated inat.photos.cultivated not asked
GBIF media gbif.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 asked
Wikimedia Commons commons 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 22 datasets via GBIF.org; each carries its own licence.

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