Dasylirion texanum, Pedernales Falls State Park, Cypress Mill, TX, US

no rights reserved · observed growing wild · 2021-11-20

Dasylirion texanum Scheele

Texas sotol, Texas sotol

Climate known 50 photographs

Every figure on this page is derived from public data by a stated rule and says its source; nothing here is written by a person or a model, except the Wikipedia passage, which is quoted and marked as such. How it is made.

Summary

Dasylirion texanum, the Texas sotol and sotol, is a monocot flowering plant native to central and southwestern Texas and in Coahuila state of northeastern Mexico, including the Chihuahuan Desert.

Text from Wikipedia, “Dasylirion texanum”, CC BY-SA 4.0, quoted as written. Kept separate from everything derived here.

About the genus · Dasylirion

Dasylirion is a genus of succulent, rosette-forming plants in the Asparagaceae family, where it is included in the subfamily Convallarioideae. Most species are native to mountainous arid regions of Mexico, with some species also native to the Southwestern United States. The common name sotol is used in English and Spanish to describe various Dasylirion species, as well as giving its name to a distilled spirit made from some species of the genus.

Text from Wikipedia, “Dasylirion”, CC BY-SA 4.0, quoted as written.

Family

Asparagaceae

Described by

Scheele

Native to

Texas, Mexico Northeast

Wild records

1284 in range· 292 open

At a glance

Warmest month

34°C

Aug, mean day; nights 23 °C (CHELSA)

Rain

820mm/yr

12 wet months · peak Jun 107 mm (CHELSA)

Light

18–43DLI

mol/m²/day, winter to summer, open sky (CHELSA shortwave)

In short condensed by rule from the cultivation cards · not written by a person

Rain rule: no season, 70% of the rain takes 8 months (March to July and September to November in the northern hemisphere). Habitat rain 820 mm a year, wettest June at 107 mm, driest January at 45 mm (habitat calendar, northern hemisphere). Open sky over the habitat: 18 to 43 mol/m²/day. Cold floor -4.3 °C (1st-percentile habitat night, NASA POWER).

Each sentence is one card's own one-line form, written by the same rule as the card (Its year, Rain, Light, Temperature); the note cannot say what a card does not. Months are given for the northern hemisphere (set your site in Settings to change this), and the habitat's own alongside. The cards · the figures.

Also known as Dasylirion texanum var. aberrans Trel.

Cultivation

Its year Rain rule: no season, 70% of the rain takes 8 months (March to July and September to November in the northern hemisphere).

This species’ habitat figures, and what two fixed rules read from them.

The rain rule reads no season: 70% of the year's rain (625 mm of 820 mm) takes 8 months, March to July and September to November. Mean temperature moves 18.2 °C between the warmest and coldest month. Months are the habitat's, northern hemisphere; shifted six months for a southern-hemisphere collection: September to January and March to May.

Read from the median year of CHELSA monthly rainfall and mean temperature across the envelope cells: 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 gives a season to reverse. A reading of the curves, not an observation of the plant.

Rain Habitat rain 820 mm a year, wettest June at 107 mm, driest January at 45 mm (habitat calendar, northern hemisphere).

This species’ habitat figures, with their source.

820 mm a year at the habitat, 625 mm of it March to July and September to November. Wettest month June at 107 mm, driest January at 45 mm. Across the envelope cells the year's total runs 487 mm to 948 mm (10th to 90th percentile of each cell's own year) (median year across the envelope cells, CHELSA; habitat calendar, northern hemisphere).

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

Light Open sky over the habitat: 18 to 43 mol/m²/day.

This species’ habitat figures, with their source.

Open sky over the habitat: 18 to 43 mol/m²/day across the year (daily light integral, median year across the envelope cells, CHELSA; the lowest 10th-percentile month across the cells is 17, the highest 90th-percentile month 44).

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.

Warmth and air Cold floor -4.3 °C (1st-percentile habitat night, NASA POWER).

This species’ habitat figures, with their source.

Temperature

Coldest: the 1st-percentile night over 44 years at the typical cell is -4.3 °C, the absolute minimum -16.0 °C, about 19 frost nights a year (NASA POWER daily minima). Warmest: the 99th-percentile day is 40.3 °C. Monthly means: coldest night 5.8 °C in January (across the envelope cells 4.4 °C to 6.7 °C), warmest day 33.5 °C in August (median year across the envelope cells, CHELSA). Cold floor: -4.3 °C, which is the 1st-percentile night over 44 years at the typical cell (NASA POWER).

NASA POWER daily minima and maxima 1981–2024 at the typical cell, lapse-corrected to its elevation; CHELSA monthly means, median year across the envelope cells, CHELSA. The cold floor is the figure named in its sentence. Not a measured survival limit for any plant in a pot.

Humidity

Relative humidity at the habitat: 56 to 60% across the year (monthly means, median year across the envelope cells, CHELSA). A figure about the air, saying nothing about how the plant takes water.

CHELSA relative humidity, median year across the envelope cells.

The figures the cards read from are in Climate below, and where they came from in Natural habitat.

Climate across the habitat

day night rain 10th–90th percentile across 351 habitat cells cold quarter: the three months around the coldest night extremes over 44 years at the typical cell, marked at the edge: undated DLI, mol/m²/dayRH %each on its own scale

Figures by month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Day °C	17 / 16–18	19 / 18–20	22 / 22–24	26 / 26–28	29 / 28–31	32 / 31–33	33 / 32–34	34 / 32–35	30 / 29–32	26 / 25–27	21 / 20–22	17 / 16–18
Night °C	6 / 4–7	8 / 6–8	11 / 9–12	15 / 13–16	19 / 18–20	22 / 21–23	23 / 22–24	23 / 22–24	20 / 19–22	16 / 15–17	11 / 9–12	7 / 5–8
Rain mm	45 / 20–56	49 / 22–57	65 / 26–79	58 / 37–69	94 / 58–109	107 / 63–123	69 / 46–89	55 / 47–67	79 / 61–88	96 / 56–115	57 / 22–77	46 / 16–58
DLI	20 / 19–22	24 / 23–28	30 / 29–35	36 / 35–41	38 / 37–43	41 / 41–44	43 / 43–44	41 / 40–42	34 / 33–35	26 / 26–29	21 / 20–23	18 / 17–21
RH %	57 / 54–58	57 / 53–58	57 / 51–58	56 / 50–57	60 / 54–61	59 / 54–60	57 / 53–58	56 / 52–57	57 / 55–58	58 / 55–58	58 / 54–58	57 / 54–58

Each figure is the median across the 351 grid cells holding the 1151 in-range records, with the 10th–90th percentile span across those cells after the slash where it differs. Extremes and elevation were read at the typical cell 1202:1627 (29.875, -98.625). Over 44 years there: absolute minimum -16.0 °C, 1st-percentile night -4.3 °C, 99th-percentile day 40.3 °C. Normals: CHELSA V2.1 1981–2010 climatology, 0.05° cells (each the mean of ~36 1 km pixels). Envelope: median and 10th–90th percentile of each month across the 351 distinct grid cells holding the 1151 in-range records; extremes and elevation at the typical cell 1202:1627 (its coldest month's mean night nearest the median across cells); its position is the cell centre. Extremes: NASA POWER (MERRA-2) daily 1981–2024, cell 30.00_-98.750, lapse-corrected -82 m at 6.5 °C/km. Elevation: ETOPO 2022, 387 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 every in-range record's cell, not at the marker.

Openly licensed records inside the range, framed on where they fall.

NativeTexas, Mexico Northeast

Kew's description“subshrub” · “desert or dry shrubland”· quoted from WCVP, RBG Kew (CC BY 4.0); not derived here

Map marker29.665, -98.629 · in the densest population, 1094 records (85% of those in range)

Evidence usedThe map marker and the climate envelope rest on all 1284 georeferenced records inside the native range; the map shows only the 292 openly licensed ones, which alone would put the marker 4 km away. 4 records outside the range (gardens, roadsides, misidentifications) ignored. 133 in-range records are placed to worse than 10 km and stay on the map but off the climate.

The map markerthe map marker: the openly licensed record nearest the middle of the densest 1° population of the 1284 in-range records; it decides nothing.

Photographs

Photographs: no rights reserved · CC0 (3); (c) EJ Burns, some rights reserved (CC BY); (c) Ben Hayden, some rights reserved (CC BY) (3); (c) Gary Rogers, some rights reserved (CC BY).

Photographs: iNaturalist did not answer when this page was built; what is shown came from the sources that did.

Papers naming this species

Works whose title or abstract names Dasylirion texanum, most cited first, from OpenAlex (CC0). A mention, not a cultivation source: nothing on this page is drawn from them.

Earth-Oven Plant Processing in Archaic Period Economies: An Example from a Semi-Arid Savannah in South-Central North America

Phil Dering (1999) · American Antiquity

Observations on the Biologies of Enoclerus abdominalis (Chevrolat) and Enoclerus opifex (Gorham) (Coleoptera: Cleridae)

David E. Foster (1971) · The Coleopterists Bulletin

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