72 photographs › At a glance
- Jan
- Feb
- Mar
- Apr
- May, shaded
- Jun, shaded
- Jul, shaded
- Aug, shaded
- Sep, shaded
- Oct, shaded
- Nov
- Dec
Summary
Fraxinus cuspidata, the fragrant ash, is a tree native to northern Mexico and the southwestern United States. It has been reported from Nuevo León, Coahuila, Chihuahua, Tamaulipas, Texas, New Mexico, Arizona and Nevada.
Quoted from Wikipedia, "Fraxinus cuspidata", CC BY-SA 4.0.
About the genus · Fraxinus
Fraxinus, commonly called ash, is a genus of plants in the olive and lilac family, Oleaceae, and comprises 45–65 species of usually medium-to-large trees, most of which are deciduous, although some subtropical species are evergreen. The genus is widespread throughout much of Europe, Asia, and North America.
Quoted from Wikipedia, "Fraxinus", CC BY-SA 4.0.
Cultivation
Seasons
The rain rule reads a summer growing season: 70% of the median year's rain (342 mm of 456 mm) falls in May to October, warmer than the year (wet-season mean 19.8 °C against a yearly mean of 15.0 °C). Months are the habitat's, northern hemisphere; shifted six months for a southern-hemisphere collection: November to April.
Rain
456 mm in the median year at the habitat, 342 mm of it May to October. Wettest month July at 79 mm, driest month February at 16 mm. Across the grid cells of the range the year's total runs 305 mm to 774 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 460 mm, is the year's rain at the top of the page; the 456 mm here is the median year's, the twelve monthly medians added, which the rain rule reads. Habitat calendar, northern hemisphere; median year across the grid cells of the range, CHELSA.
Light
Open sky over the habitat: 22 to 49 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 19, the highest 90th-percentile month 54).
Warmth and air
Monthly means: the coldest month's mean nightly low 1.3 °C in January (across the grid cells of the range -6.4 °C to 5.7 °C), the warmest month's mean daily high 27.9 °C in June (median year across the grid cells of the range, CHELSA). Cold floor: none read. The nearest figure is 1.3 °C, the coldest month's mean nightly low, January, in the median year (CHELSA); a month's mean of its nightly lows is warmer than the nights a floor is read from. The daily extremes were read at a weather cell whose ground is too far above or below the typical spot to correct for, and are not used.
Relative humidity at the habitat: 43 to 54% 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. CHELSA monthly means, median year across the grid cells of the range. No cold floor is read without a daily extremes series; the coldest month's mean nightly low named in its sentence is not one. 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, northern hemisphere
Mean daily high from 14 °C in Jan and Dec to 28 °C in Jun and Jul; mean nightly low from 1 °C in Jan to 16 °C in Jul. The cold quarter, Dec to Feb, is the three months around the coldest month's mean nightly low. 456 mm of rain in the median year (the twelve monthly medians added), the wettest month Jul. The bands show the 10th to 90th percentile across 161 habitat cells. Beneath: daily light integral and relative humidity through the year, each on its own scale.
Figures by month
| Figure | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day °C | 14 / 5–18 | 16 / 7–21 | 19 / 11–24 | 23 / 16–27 | 26 / 21–30 | 28 / 24–32 | 28 / 23–33 | 26 / 22–31 | 24 / 21–28 | 22 / 17–25 | 18 / 10–22 | 14 / 5–19 |
| Night °C | 1 / -6–6 | 3 / -5–7 | 5 / -2–10 | 9 / 2–13 | 12 / 7–16 | 15 / 11–19 | 16 / 12–20 | 15 / 12–20 | 14 / 10–17 | 10 / 4–13 | 5 / -1–9 | 2 / -6–6 |
| Rain mm | 23 / 16–34 | 16 / 11–34 | 18 / 9–31 | 22 / 11–47 | 37 / 11–77 | 53 / 9–95 | 79 / 39–114 | 75 / 45–117 | 60 / 31–136 | 38 / 25–62 | 17 / 11–28 | 18 / 12–38 |
| DLI | 24 / 21–27 | 30 / 28–33 | 39 / 37–41 | 46 / 42–47 | 49 / 43–52 | 48 / 43–54 | 44 / 43–48 | 42 / 40–43 | 37 / 34–39 | 32 / 30–33 | 26 / 23–29 | 22 / 19–26 |
| RH % | 51 / 47–56 | 50 / 44–55 | 47 / 40–54 | 43 / 38–55 | 44 / 38–58 | 48 / 36–61 | 52 / 44–60 | 54 / 48–61 | 54 / 45–65 | 50 / 45–62 | 48 / 46–57 | 51 / 46–55 |
The daily extremes were not used: the correction for elevation, +1420 m, is beyond the 1,000 m either way that a lapse rate is applied over, so the weather cell's ground is other terrain than the typical spot's. So no cold floor is read for this species, and the coldest month's mean nightly low is not taken as one. What that cell gave, so corrected, over 44 years: absolute minimum -17.5 °C, 1st-percentile night -8.0 °C.
How this section is made
Natural habitat
How this section is made
Photographs
Photographs: (c) Cody Hinchliff, some rights reserved (CC BY) (4); (c) Martin Purdy, some rights reserved (CC BY) (2).
Related
Similar habitat climate The 6 nearest by mean daily high, mean nightly low and rain, month by month. How.
Salvia lycioides Canyon sage Photo: CC BY, Jackie T
Houstonia rubra Red bluet Photo: CC0, author not stated
Agave × glomeruliflora Chisos agave Photo: CC BY, Reid Hardin
Pseudognaphalium canescens Wright's rabbit-tobacco Photo: CC BY, Zihao Wang
Quercus grisea Gray oak Photo: CC BY, Clifton Ladd, C.W.B.
Sedum wrightii Wright's stonecrop Photo: CC BY-SA, Turner BrockmanOther Fraxinus 40 in the reference
Fraxinus albicans Texas ash Photo: CC BY, Michelle W. （鍾偉瑋）
Fraxinus americana White ash Photo: CC BY, Zihao Wang
Fraxinus angustifolia Narrow-leaved Ash Photo: CC BY-SA, Greg Tasney
Fraxinus anomala Single-leaf ash Photo: CC BY, Kate Kruesi Fraxinus apertisquamifera Oleaceae 
Fraxinus baroniana Oleaceae Photo: CC BY-SA, Krzysztof Ziarnek, Kenraiz
Fraxinus berlandieriana Berlandier ash Photo: CC BY, Craig Hensley
Fraxinus bungeana Northern ash Photo: CC BY, Jane Charlen
Fraxinus caroliniana Carolina ash Photo: CC BY, harrii
Fraxinus chinensis Chinese ash Photo: CC BY, Поляков Александр
Fraxinus dimorpha Wild Ash Photo: CC BY, Mehdi Chetibi
Fraxinus dipetala Two-petal ash Photo: CC BY, Jonas Katona all 41 ›Names & registers
Also known as Fraxinus cuspidata subsp. macropetala; Fraxinus cuspidata var. macropetala; Fraxinus cuspidata var. serrata; Fraxinus macropetala; Fraxinus mexicana and 1 more. (GBIF Backbone)
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
gbif.species answeredasked 2026-10-22gbif.synonyms answeredasked 2026-10-22gbif.vernacular answeredasked 2026-10-22names fetched 2026-10-22wcvp.distribution answeredas of 2026-06-04gbif.occurrences answeredas of 2026-10-21GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21climate answeredasked 2026-10-22climate.extremes answeredasked 2026-10-22NASA POWER (MERRA-2) daily 1981–2024, cell 25.50_-100.000, lapse-corrected +1420 m at 6.5 °C/km; read, and set aside: the correction for elevation, +1420 m, is beyond the 1,000 m either way that a lapse rate is applied over, so the weather cell's ground is other terrain than the typical spot's, so no cold floor is shownwikidata answeredasked 2026-10-22wikipedia answeredasked 2026-10-22inat.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 2026-10-22inat.photos.cultivated not askedgbif.media answeredasked 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 43 datasets via GBIF.org; each carries its own licence.