Buddleja marrubiifolia, Lerdo, Dgo., México

Buddleja marrubiifolia Benth.

Woolly Butterflybush, Woolly butterflybush (EN), woolly butterfly-bush

Climate known 75 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

Buddleja marrubiifolia, commonly known as the woolly butterflybush, is a perennial shrub which is endemic to the Chihuahuan Desert from southern Texas to San Luis Potosí in Mexico, where it grows on limestone and gypsum soils in canyons and arroyos at elevations of 600 to 2,250 m elevation. The species was first named and described by George Bentham in 1846.

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

About the genus · Buddleja

Buddleja is a genus comprising over 140 species of flowering plants endemic to Asia, Africa, and the Americas. The generic name bestowed by Linnaeus posthumously honoured Adam Buddle (1662–1715), an English botanist and rector, at the suggestion of William Houstoun. Houstoun sent the first plants to become known to science as buddleja to England from the Caribbean about 15 years after Buddle's death. More on Wikipedia ›

The opening of Wikipedia, “Buddleja”, CC BY-SA 4.0, quoted as written.

Family

Scrophulariaceae

Described by

Benth.

Native to

Texas, Mexico Northeast, Mexico Southwest

Wild records

540 in range· 323 open

At a glance

Warmest month

32°C

Jun, mean day; nights 20 °C (CHELSA)

Rain

367mm/yr

6 wet months · peak Jul 65 mm (CHELSA)

Light

25–49DLI

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: a summer growing season, June to October in the northern hemisphere (June to October at the habitat, northern). Habitat rain 367 mm a year, wettest July at 65 mm, driest March at 9 mm (habitat calendar, northern hemisphere). Open sky over the habitat: 25 to 49 mol/m²/day. Cold floor -0.9 °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 Buddleja marrubiifolia subsp. marrubiifolia; Buddleja saltillensis Kraenzl.; Buddleja simplex Kraenzl.

Cultivation

Its year Rain rule: a summer growing season, June to October in the northern hemisphere (June to October at the habitat, northern).

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

The rain rule reads a summer growing season: 70% of the year's rain (260 mm of 367 mm) falls in June to October, warmer than the year (wet-season mean 24.0 °C against a yearly mean of 19.9 °C). Months are the habitat's, northern hemisphere; shifted six months for a southern-hemisphere collection: December to April.

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 367 mm a year, wettest July at 65 mm, driest March at 9 mm (habitat calendar, northern hemisphere).

This species’ habitat figures, with their source.

367 mm a year at the habitat, 260 mm of it June to October. Wettest month July at 65 mm, driest March at 9 mm. Across the envelope cells the year's total runs 283 mm to 591 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: 25 to 49 mol/m²/day.

This species’ habitat figures, with their source.

Open sky over the habitat: 25 to 49 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 23, the highest 90th-percentile month 51).

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 -0.9 °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 -0.9 °C, the absolute minimum -8.7 °C, about 6 frost nights a year (NASA POWER daily minima). Warmest: the 99th-percentile day is 39.0 °C. Monthly means: coldest night 5.7 °C in January (across the envelope cells 3.0 °C to 8.1 °C), warmest day 31.8 °C in June (median year across the envelope cells, CHELSA). Cold floor: -0.9 °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: 43 to 55% 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 356 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	20 / 16–22	22 / 19–24	25 / 22–28	29 / 25–31	31 / 26–34	32 / 26–36	30 / 25–35	30 / 25–34	28 / 23–32	26 / 22–29	23 / 20–25	20 / 17–22
Night °C	6 / 3–8	7 / 5–10	10 / 7–13	14 / 10–16	17 / 13–20	20 / 14–23	19 / 14–23	19 / 14–23	18 / 13–21	14 / 11–17	10 / 7–12	7 / 4–9
Rain mm	17 / 13–25	10 / 5–16	9 / 4–15	17 / 9–35	32 / 17–62	47 / 35–74	65 / 46–95	56 / 41–91	59 / 37–104	33 / 24–48	11 / 8–16	11 / 9–17
DLI	27 / 24–29	33 / 30–36	41 / 38–44	46 / 42–48	49 / 44–51	48 / 43–49	45 / 42–46	43 / 41–44	37 / 34–39	33 / 31–35	29 / 26–31	25 / 23–28
RH %	50 / 47–57	47 / 43–56	44 / 39–54	43 / 39–55	46 / 40–58	50 / 45–60	52 / 48–61	53 / 49–60	55 / 50–63	51 / 48–61	49 / 46–58	49 / 47–57

Each figure is the median across the 356 grid cells holding the 495 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 1267:1527 (26.625, -103.625). Over 44 years there: absolute minimum -8.7 °C, 1st-percentile night -0.9 °C, 99th-percentile day 39.0 °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 356 distinct grid cells holding the 495 in-range records; extremes and elevation at the typical cell 1267:1527 (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 26.50_-103.750, lapse-corrected +23 m at 6.5 °C/km. Elevation: ETOPO 2022, 1212 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, Mexico Southwest

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

Map marker29.415, -103.507 · in the densest population, 428 records (79% of those in range)

Evidence usedThe map marker and the climate envelope rest on all 540 georeferenced records inside the native range; the map shows only the 323 openly licensed ones, which alone would put the marker 307 km away. 11 records outside the range (gardens, roadsides, misidentifications) ignored. 45 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 inside the densest 2° block of the 540 in-range records; it decides nothing.

Photographs

Photographs: (c) Rodolfo Maximiliano Gutiérrez-Sánchez, some rights reserved (CC BY) (2); (c) Joseph Aubert, some rights reserved (CC BY) (6).

Photographs: iNaturalist and Wikimedia Commons 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 Buddleja marrubiifolia, most cited first, from OpenAlex (CC0). A mention, not a cultivation source: nothing on this page is drawn from them.

A new diterpene and bioactivities of labdanes isolated from Buddleja marrubiifolia

Edith Fabiola Martínez-Pérez, Eleuterio Burgueño‐Tapia, Samuel A. Roa-Flores, Aranza Eliana Bendaña‐Piñeiro (2020) · Natural Product Research

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