70 photographs › At a glance
- Jan
- Feb
- Mar
- Apr
- May, shaded
- Jun, shaded
- Jul, shaded
- Aug, shaded
- Sep, shaded
- Oct, shaded
- Nov
- Dec
Summary
Hyptis capitata, also known as false ironwort or knobweed, is a species of erect annual shrubs, of the plant family Lamiaceae. It is native to Florida, Mexico, Central America, the West Indies, and South America but naturalized in Australia, Southeast Asia, and some tropical islands. The plants grow up to a height of 1.5 meters. Crushed leaves are applied to cuts. More on Wikipedia ›
Quoted from Wikipedia, "Hyptis capitata", CC BY-SA 4.0.
Cultivation
Seasons
The rain rule reads a sharp season: 70% of the median year's rain (1,442 mm of 1,987 mm) falls in May to October. The temperature curve is flat, 3.1 °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, northern hemisphere. The temperature curve moves under 4 °C between the warmest and coldest month, where the shift rule does not apply, so they are not shifted for a collection elsewhere.
Rain
1,987 mm in the median year at the habitat, 1,442 mm of it May to October. Wettest month September at 281 mm, driest month March at 56 mm. Across the grid cells of the range the year's total runs 1,177 mm to 3,482 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 2,085 mm, is the year's rain at the top of the page; the 1,987 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: 29 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 23, the highest 90th-percentile month 47).
Warmth and air
Coldest: the 1st-percentile night over 44 years at a typical spot in the range is 12.6 °C, the absolute minimum 8.1 °C, no frost in 44 years (NASA POWER daily minima). Warmest: the 99th-percentile day is 38.2 °C. Monthly means: the coldest month's mean nightly low 18.6 °C in January (across the grid cells of the range 12.0 °C to 22.8 °C), the warmest month's mean daily high 28.4 °C in May (median year across the grid cells of the range, CHELSA). Cold floor: 12.6 °C, which is the 1st-percentile night over 44 years at a typical spot in the range (NASA POWER).
Relative humidity at the habitat: 61 to 68% 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 +53 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, northern hemisphere
Mean daily high from 26 °C in Jan and Dec to 28 °C in Mar, Apr, May, Jun, Jul, Aug and Sep; mean nightly low from 19 °C in Jan, Feb and Dec to 22 °C in Jun. The cold quarter, Dec to Feb, is the three months around the coldest month's mean nightly low, centred on the 3 months in a row that tie for it. 1,987 mm of rain in the median year (the twelve monthly medians added), the wettest month Sep. The bands show the 10th to 90th percentile across 279 habitat cells. Over 44 years at a typical spot in the range (NASA POWER) the absolute minimum was 8.1 °C and the 99th-percentile day 38.2 °C; neither is dated to a month. 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 | 26 / 22–30 | 27 / 23–32 | 28 / 24–32 | 28 / 25–33 | 28 / 25–33 | 28 / 24–31 | 28 / 24–31 | 28 / 24–31 | 28 / 24–30 | 27 / 24–29 | 27 / 23–29 | 26 / 22–30 |
| Night °C | 19 / 12–23 | 19 / 12–23 | 20 / 13–23 | 21 / 14–24 | 21 / 15–25 | 22 / 16–25 | 21 / 15–25 | 21 / 15–25 | 21 / 16–24 | 21 / 15–24 | 20 / 14–23 | 19 / 13–23 |
| Rain mm | 67 / 11–162 | 59 / 11–150 | 56 / 6–217 | 97 / 7–324 | 178 / 26–415 | 231 / 122–410 | 258 / 120–409 | 253 / 130–436 | 281 / 157–481 | 241 / 97–409 | 167 / 23–306 | 99 / 10–228 |
| DLI | 31 / 24–35 | 35 / 28–38 | 38 / 32–44 | 41 / 30–47 | 40 / 27–46 | 35 / 25–42 | 35 / 26–42 | 35 / 29–41 | 33 / 27–38 | 31 / 27–35 | 30 / 25–33 | 29 / 23–33 |
| RH % | 63 / 54–69 | 62 / 53–69 | 61 / 52–69 | 62 / 52–70 | 65 / 55–71 | 67 / 62–72 | 66 / 62–72 | 67 / 62–72 | 68 / 63–72 | 67 / 62–72 | 66 / 59–72 | 65 / 56–70 |
How this section is made
Natural habitat
How this section is made
Photographs
Photographs: (c) Martin Rady, some rights reserved (CC BY) (5); (c) Alexis López Hernández, some rights reserved (CC BY).
Related
Similar habitat climate The 6 nearest by mean daily high, mean nightly low and rain, month by month. How.
Cosmos caudatus Wild cosmos Photo: CC BY, Celso Henrique Varela Rios
Passiflora biflora Two-flower passionflower Photo: CC BY, Maria Janeiro
Inga punctata Fabaceae Photo: CC BY, Alexis López Hernández
Trema micranthum Jamaican nettletree Photo: CC BY, Corey Farwell
Centrosema pubescens Flor de conchitas Photo: CC0, author not stated
Bacopa salzmannii Plantaginaceae Photo: CC BY, Nicolas OlejnikOther Hyptis 4 in the reference
Hyptis alata Clustered bushmint Photo: CC BY, Milo Caton
Hyptis atrorubens Marubio oscuro Photo: CC BY, Guillaume Delaitre
Hyptis brevipes Lesser roundweed Photo: CC BY, James Hardee Hyptis recurvata Lamiaceae Names & registers
Also known as Clinopodium capitatum; Hyptis capitata var. mariannarum; Hyptis capitata var. mexicana; Hyptis capitata var. pilosa; Hyptis capitata var. vulgaris and 11 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 2026-10-21; 19 records within 1 km of a botanic garden, herbarium or zoo left out (5 at a botanic garden or arboretum, 3 at a herbarium, 11 at a zoo; Wikidata's list)climate answeredasked 2026-10-22climate.extremes answeredasked 2026-10-22NASA POWER (MERRA-2) daily 1981–2024, cell 18.50_-89.375, lapse-corrected +53 m at 6.5 °C/kmwikidata answeredasked 2026-10-22IPNI and POWO linked by Kew's number for Hyptis capitata Jacq. (the item's: IPNI 126747-2, POWO 447996-1)wikipedia 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 141 datasets via GBIF.org; each carries its own licence.