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Ipomoea heptaphylla; photograph Alexis López Hernández, CC BY, iNaturalist via GBIF CC BYAlexis López Hernández, CC BY, iNaturalist via GBIF

Ipomoea heptaphylla Sweet

Wright's morning glory

Convolvulaceae · Mexico Northwest, Mexico Southwest +24

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Ipomoea heptaphylla, photograph Alexis López Hernández, CC BY, iNaturalist via GBIFIpomoea heptaphylla, photograph Sam Kieschnick, CC BY, iNaturalist via GBIFIpomoea heptaphylla, photograph Sam Kieschnick, CC BY, iNaturalist via GBIFIpomoea heptaphylla, photograph Annika Lindqvist, CC BY, iNaturalist via GBIFIpomoea heptaphylla, photograph Annika Lindqvist, CC BY, iNaturalist via GBIFIpomoea heptaphylla, photograph Annika Lindqvist, CC BY, iNaturalist via GBIF 24 photographs ›
Habitat figures
Cold floor (1 night in 100)
14.4°C
Record low 10.6 °C in 44 years, at a typical spot in the range NASA POWER
Warmest month, mean daily high
31°C
Sep at the habitat CHELSA
Rain a year (median across the range)
856mm
11 months of 25 mm or more in the median year CHELSA
Open-sky light
31–41DLI
Lowest to highest month (DLI) CHELSA
The year in the habitat's months, not shifted
  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec
A sharp rainy season, May to November (the habitat's months, not shifted), in a year of even temperature. rain rule, CHELSA
Not shifted: the shift rule does not apply to this habitat. The chart is in the habitat's months.

Summary

Ipomoea heptaphylla, sometimes known as Wright's morning glory in the United States, is a species of morning glory. It is incorrectly classified as I. wrightii in American publications, but is incorrectly known as I. tenuipes in Africa and India. It is an annual or short-lived perennial vine which climbs using twining stems, and has pink or purple flowers. The leaf shape is somewhat variable, with individuals possessing compound leaves palmately divided into five leaflets, and lanceolate-leaved individuals occurring in neighbouring populations. More on Wikipedia ›

Quoted from Wikipedia, "Ipomoea heptaphylla", CC BY-SA 4.0.

About the genus · Ipomoea

Ipomoea is the largest genus in the plant family Convolvulaceae, with over 600 species. It is a large and diverse group, with common names including morning glory, water Convolvulus or water spinach, sweet potato, bindweed, moonflower, etc. The genus occurs throughout the tropical and subtropical regions of the world, and comprises annual and perennial herbaceous plants, lianas, shrubs, and small trees; most of the species are twining climbing plants.

Quoted from Wikipedia, "Ipomoea", CC BY-SA 4.0.

Cultivation

Seasons

The rain rule reads a sharp season: 70% of the median year's rain (517 mm of 677 mm) falls in May to November. The temperature curve is flat, 2.5 °C between the warmest and coldest month, so the growing-season rule does not infer a growing season from it. Months are the habitat's, southern hemisphere. The habitat lies within 10° of the equator, where the shift rule does not apply, so they are not shifted for a collection elsewhere.

Rain

677 mm in the median year at the habitat, 517 mm of it May to November. Wettest month September at 106 mm, driest month March at 21 mm. Across the grid cells of the range the year's total runs 544 mm to 1,548 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 856 mm, is the year's rain at the top of the page; the 677 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: 31 to 41 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 24, the highest 90th-percentile month 45).

Warmth and air
Temperature

Coldest: the 1st-percentile night over 44 years at a typical spot in the range is 14.4 °C, the absolute minimum 10.6 °C, no frost in 44 years (NASA POWER daily minima). Warmest: the 99th-percentile day is 42.4 °C. Monthly means: the coldest month's mean nightly low 21.3 °C in January and December (across the grid cells of the range 18.3 °C to 24.9 °C), the warmest month's mean daily high 30.6 °C in September (median year across the grid cells of the range, CHELSA). Cold floor: 14.4 °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: 60 to 64% 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 -16 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 Ipomoea heptaphylla through the yearWarmest month September, mean daily high 31 °C; coldest months January and December, mean nightly low 21.3 °C; 677 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.0°10°20°30°40°50°42.4° 99th-percentile day, NASA POWER10.6° lowest night in 44 years, NASA POWER°C · day and nightcold quarter050100150200250300mm rainDLI 31–41RH 60–64%JanFebMarAprMayJunJulAugSepOctNovDec
day night rain medians and 10th–90th percentile across 40 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 °C27 / 26–3229 / 26–3230 / 26–3230 / 26–3430 / 27–3530 / 27–3330 / 27–3330 / 28–3331 / 28–3229 / 28–3328 / 27–3328 / 26–33
Night °C21 / 18–2522 / 19–2522 / 19–2523 / 20–2624 / 19–2625 / 17–2624 / 17–2624 / 18–2624 / 19–2723 / 20–2622 / 19–2621 / 19–25
Rain mm41 / 23–10630 / 12–11321 / 9–16531 / 14–11651 / 7–11449 / 19–22178 / 14–23879 / 6–265106 / 6–270100 / 4–17454 / 6–14037 / 13–118
DLI34 / 26–3937 / 31–3939 / 35–4241 / 33–4440 / 30–4539 / 27–4238 / 27–4239 / 32–4237 / 31–4035 / 30–4232 / 27–4331 / 24–40
RH %60 / 57–6460 / 57–6460 / 56–6461 / 55–6660 / 55–6662 / 58–6662 / 57–6662 / 55–6664 / 52–6663 / 53–6661 / 55–6661 / 56–65
How this section is made
Each figure is the median across the 40 grid cells holding the 65 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 1438:1761 (18.075, -91.925). Over 44 years there: absolute minimum 10.6 °C, 1st-percentile night 14.4 °C, 99th-percentile day 42.4 °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 40 distinct grid cells holding 65 of the 65 in-range records; extremes and elevation at the typical cell 1438:1761 (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 18.00_-91.875, lapse-corrected -16 m at 6.5 °C/km. Elevation: ETOPO 2022, 7 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.
NativeMexico Northwest, Mexico Southwest, Mexico Southeast, Costa Rica, El Salvador, Guatemala, Nicaragua, Aruba, Cuba, Dominican Republic, Haiti, Jamaica, Leeward Is. AB Ant, Netherlands Antilles, Puerto Rico, Windward Is., Venezuela, Bolivia, Ecuador, Peru, Brazil West-Central, Brazil Northeast, Brazil Southeast, Brazil North, Argentina Northeast, Paraguay · introduced: Egypt, China Southeast, Korea, India, Oklahoma, Texas, Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, Tennessee, Galápagos · 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-6.83, -38.546 · in the densest population, 51 records (31% of those in range)
Kew's description“climbing annual” · “seasonally dry tropical” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 164 georeferenced records inside the native range; the climate across the range on the 65 of them placed to within 10 km; the map shows only the 121 openly licensed ones, which alone would put the marker 6 km away. 231 records outside the WCVP native range not used. 99 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 3678441 (Convolvulus heptaphyllus Roxb.): Kew's file holds it as Convolvulus heptaphyllus Roxb. (illegitimate under Ipomoea heptaphylla Sweet); 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 inside the densest 2° block of the 164 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Ipomoea heptaphylla, photograph 1did not loadIpomoea heptaphylla, photograph 2did not loadIpomoea heptaphylla, photograph 3did not loadIpomoea heptaphylla, photograph 4did not loadIpomoea heptaphylla, photograph 5did not loadIpomoea heptaphylla, photograph 6did not load

Photographs: Alexis López Hernández, CC BY, iNaturalist via GBIF; Sam Kieschnick, CC BY, iNaturalist via GBIF (2); Annika Lindqvist, CC BY, iNaturalist via GBIF (3).

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

Pimenta haitiensis Pimenta haitiensis Jaragua Bay Tree Photo: CC0, author not statedMelocactus curvispinus Melocactus curvispinus Cactaceae Photo: CC BY, Laura GaudetteAbutilon viscosum Abutilon viscosum Viscid Mallow Photo: CC BY, Tom FieldDistimake aegyptius Distimake aegyptius Hairy woodrose Photo: CC BY, Breno FigueiredoAlternanthera flavescens Alternanthera flavescens Yellow joyweed Photo: CC BY, Kenzie Anderson-BellCanavalia brasiliensis Canavalia brasiliensis Brazilian jackbean Photo: CC BY, Breno Figueiredo

Other Ipomoea 106 in the reference

Ipomoea aitonii Convolvulaceae Ipomoea alba Ipomoea alba Moonflower Photo: CC BY, Brandon CorderIpomoea albivenia Ipomoea albivenia Climbing Kapok Photo: CC0, author not statedIpomoea amnicola Ipomoea amnicola Redcenter morning-glory Photo: CC0, author not statedIpomoea anisomeres Ipomoea anisomeres Convolvulaceae Photo: CC BY, Alexis López HernándezIpomoea aquatica Ipomoea aquatica Swamp morning-glory Photo: CC BY, renjus boxIpomoea arborescens Ipomoea arborescens Tree Morning Glory Photo: CC BY-SA, Adrian BojorquezIpomoea asarifolia Ipomoea asarifolia Ginger-leaf morning-glory Photo: CC BY, Marcello Mastroianni Albuquerque AraújoIpomoea bahiensis Ipomoea bahiensis Convolvulaceae Photo: CC BY, Paulo NogueiraIpomoea batatas Ipomoea batatas Sweet potato Photo: CC BY, winterfamilyIpomoea biflora Ipomoea biflora Bellvine Photo: CC BY, 如此甚好Ipomoea bolusiana Ipomoea bolusiana Narrowleaf Morning Glory Photo: CC0, dune_ninja all 107 ›

Names & registers

Also known as Ipomoea capillifolia; Ipomoea gracilipes; Ipomoea humilis; Ipomoea pulchella; Ipomoea pulchella var. lineariloba and 4 more. (GBIF Backbone)

GBIFPOWOIPNIWFOWikidataWikipedia

The record

Family
Convolvulaceae
Described by
Sweet
Native to
Mexico Northwest, Mexico Southwest, Mexico Southeast +23
Wild records
164 in range · 121 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 2026-10-22
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 answeredasked 2026-10-22GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21; 0 records of GBIF's key 3678441, Convolvulus heptaphyllus Roxb. (Kew's file holds it as Convolvulus heptaphyllus Roxb. (illegitimate under Ipomoea heptaphylla Sweet)): GBIF occurrence search API; 1 record within 1 km of a botanic garden, herbarium or zoo left out (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 18.00_-91.875, lapse-corrected -16 m at 6.5 °C/km
Wikidata wikidata answeredasked 2026-10-22found by its label; its POWO identifier 60457868-2 is Kew's for Ipomoea heptaphylla Sweet
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 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 63 datasets via GBIF.org; each carries its own licence.

Cultifolio

Opening your plants…