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Muehlenbeckia hastulata; photograph (c) Bruno Avilez, some rights reserved (CC BY) CC BY(c) Bruno Avilez, some rights reserved (CC BY) · observed growing wild · 2026-09-13

Muehlenbeckia hastulata (Sm.) I.M.Johnst.

Wirevine

Polygonaceae · California, Peru +5

Cited as Kew's World Checklist cites it, Muehlenbeckia hastulata (Sm.) I.M.Johnst.: GBIF's backbone key for this page carries the name with another author, (J.E.Sm.) I.M.Johnst.

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Muehlenbeckia hastulata, photograph (c) Gabriela Cartes, some rights reserved (CC BY)Muehlenbeckia hastulata, photograph (c) Gabriela Cartes, some rights reserved (CC BY)Muehlenbeckia hastulata, photograph (c) Bruno Avilez, some rights reserved (CC BY)Muehlenbeckia hastulata, photograph (c) Bruno Avilez, some rights reserved (CC BY)Muehlenbeckia hastulata, photograph (c) Bruno Avilez, some rights reserved (CC BY)Muehlenbeckia hastulata, photograph (c) Bruno Avilez, some rights reserved (CC BY) 71 photographs ›
Habitat figures
Cold floor (1 night in 100)
2.5°C
Record low -1.5 °C in 44 years, at a typical spot in the range NASA POWER
Warmest month, mean daily high
24°C
Jan and Feb at the habitat CHELSA
Rain a year (median across the range)
678mm
6 months of 25 mm or more in the median year CHELSA
Open-sky light
16–57DLI
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 February (May to August 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

Muehlenbeckia hastulata is a species of flowering plant in the family Polygonaceae. It is native to South America. It is a rapidly growing climbing plant and is common in Chile.

Quoted from Wikipedia, "Muehlenbeckia hastulata", CC BY-SA 4.0.

Cultivation

Seasons

The rain rule reads a winter growing season: 70% of the median year's rain (545 mm of 679 mm) falls in May to August, cooler than the year (wet-season mean 9.9 °C against a yearly mean of 13.6 °C). Months are the habitat's, southern hemisphere; shifted six months for a northern-hemisphere collection: November to February.

Rain

679 mm in the median year at the habitat, 545 mm of it May to August. Wettest month June at 157 mm, driest month January at 3 mm; 3 months under 5 mm. Across the grid cells of the range the year's total runs 218 mm to 1,992 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 678 mm, is the year's rain at the top of the page; the 679 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: 16 to 57 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 10, the highest 90th-percentile month 58).

Warmth and air
Temperature

Coldest: the 1st-percentile night over 44 years at a typical spot in the range is 2.5 °C, the absolute minimum -1.5 °C, 11 frost nights in 44 years (NASA POWER daily minima). Warmest: the 99th-percentile day is 36.5 °C. Monthly means: the coldest month's mean nightly low 4.8 °C in July (across the grid cells of the range 0.6 °C to 8.8 °C), the warmest month's mean daily high 24.4 °C in January (median year across the grid cells of the range, CHELSA). Cold floor: 2.5 °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: 56 to 63% 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 -156 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 Muehlenbeckia hastulata through the yearWarmest months January and February, mean daily high 24 °C; coldest month July, mean nightly low 4.8 °C; 679 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°frost36.5° 99th-percentile day, NASA POWER-1.5° lowest night in 44 years, NASA POWER°C · day and nightcold quarter0100200300400mm rainDLI 16–57RH 56–63%JanFebMarAprMayJunJulAugSepOctNovDec
day night rain medians and 10th–90th percentile across 496 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 °C24 / 19–2924 / 19–2823 / 18–2620 / 15–2317 / 12–2014 / 10–1814 / 9–1715 / 10–1816 / 12–1918 / 14–2221 / 16–2523 / 17–27
Night °C14 / 11–1614 / 11–1613 / 10–1510 / 7–138 / 4–116 / 2–105 / 1–96 / 1–97 / 2–109 / 5–1111 / 7–1313 / 10–15
Rain mm3 / 1–584 / 1–5011 / 5–7831 / 5–145128 / 27–325157 / 35–389155 / 59–326105 / 32–26849 / 9–15220 / 5–12012 / 3–814 / 1–60
DLI56 / 49–5750 / 43–5140 / 32–4329 / 21–3320 / 13–2416 / 10–2018 / 12–2224 / 17–2833 / 27–3743 / 35–4752 / 43–5457 / 48–58
RH %56 / 51–6557 / 52–6658 / 52–6660 / 51–6662 / 50–6862 / 49–6862 / 50–6763 / 51–6662 / 53–6660 / 54–6558 / 53–6456 / 52–64
How this section is made
Each figure is the median across the 496 grid cells holding the 897 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 2481:2172 (-34.075, -71.375). Over 44 years there: absolute minimum -1.5 °C, 1st-percentile night 2.5 °C, 99th-percentile day 36.5 °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 496 distinct grid cells holding 897 of the 897 in-range records; extremes and elevation at the typical cell 2481:2172 (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 -34.00_-71.250, lapse-corrected -156 m at 6.5 °C/km. Elevation: ETOPO 2022, 230 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.
NativeCalifornia, Peru, Argentina South, Argentina Northwest, Chile Central, Chile North, Chile South · 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-33.156, -71.145 · in the densest population, 489 records (49% of those in range)
Kew's description“climbing shrub” · “subtropical” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 988 georeferenced records inside the native range; the climate across the range on the 897 of them placed to within 10 km; the map shows only the 168 openly licensed ones, which alone would put the marker 25 km away. 2 records outside the WCVP native range not used. 91 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 988 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Muehlenbeckia hastulata, photograph 1did not loadMuehlenbeckia hastulata, photograph 2did not loadMuehlenbeckia hastulata, photograph 3did not loadMuehlenbeckia hastulata, photograph 4did not loadMuehlenbeckia hastulata, photograph 5did not loadMuehlenbeckia hastulata, photograph 6did not load

Photographs: (c) Gabriela Cartes, some rights reserved (CC BY) (2); (c) Bruno Avilez, some rights reserved (CC BY) (4).

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

Oxalis rosea Oxalis rosea Annual pink-sorrel Photo: CC BY, Cesar OrmazabalSisyrinchium striatum Sisyrinchium striatum Pale yellow-eyed-grass Photo: CC BY, SalemCalceolaria corymbosa Calceolaria corymbosa Calceolariaceae Photo: CC BY, Nicolás LavanderoLuma chequen Luma chequen Cheken Photo: CC BY, Pablo SilvaCryptocarya alba Cryptocarya alba Chilean Acorn Photo: CC BY, Matt BergerAlstroemeria ligtu Alstroemeria ligtu St. Martin's-flower Photo: CC BY, Francisco E. Fonturbel

Other Muehlenbeckia 11 in the reference

Muehlenbeckia adpressa Muehlenbeckia adpressa Climbing Lignum Photo: CC BY, Bryce Watts-ParkerMuehlenbeckia astonii Muehlenbeckia astonii Shrub Pohuehue Photo: CC BY, Liadan DickieMuehlenbeckia australis Muehlenbeckia australis Pōhuehue Photo: CC BY-SA, Christopher StephensMuehlenbeckia axillaris Muehlenbeckia axillaris Creeping Wire Vine Photo: CC BY, Hannah WhittallMuehlenbeckia complexa Muehlenbeckia complexa Wire Plant Photo: CC BY, William HarlandMuehlenbeckia ephedroides Muehlenbeckia ephedroides Leafless Pōhuehue Photo: CC BY, Liadan DickieMuehlenbeckia gunnii Muehlenbeckia gunnii Polygonaceae Photo: CC BY, Kym NicolsonMuehlenbeckia platyclada Muehlenbeckia platyclada Ribbonbush Photo: CC BY, Paul FMuehlenbeckia sagittifolia Muehlenbeckia sagittifolia Polygonaceae Photo: CC BY, Andrea GantzerMuehlenbeckia tamnifolia Muehlenbeckia tamnifolia Polygonaceae Photo: CC BY, Nicolás Baresch UribeMuehlenbeckia volcanica Muehlenbeckia volcanica Polygonaceae Photo: CC BY, Yuri Sofronov

Names & registers

Also known as Calacinum chilense; Calacinum chilensis; Calacinum hastulatum; Karkinetron undulatum; Menispermum sagittatum and 11 more. (GBIF Backbone)

Under another author Muehlenbeckia sagittifolia J.Rémy is an older name of this species, not Muehlenbeckia sagittifolia, a species of the reference. (GBIF Backbone)

GBIFPOWOIPNIWFOWikidataWikipediaiNaturalist

The record

Family
Polygonaceae
Described by
(Sm.) I.M.Johnst.
Native to
California, Peru, Argentina South +4
Wild records
988 in range · 168 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 2026-10-22GBIF's key 6390838 is Muehlenbeckia hastulata (J.E.Sm.) I.M.Johnst.; the page links Kew's Muehlenbeckia hastulata (Sm.) I.M.Johnst., and the name is cited as Kew cites it
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; 6 records within 1 km of a botanic garden, herbarium or zoo left out (5 at a botanic garden or arboretum, 1 at a zoo; Wikidata's list)
Habitat climate climate answeredasked 2026-10-22
Daily extremes (NASA POWER) climate.extremes answeredasked 2026-10-22NASA POWER (MERRA-2) daily 1981–2024, cell -34.00_-71.250, lapse-corrected -156 m at 6.5 °C/km
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 32 datasets via GBIF.org; each carries its own licence.

Cultifolio

Opening your plants…