22 photographs › At a glance
- Jan, shaded
- Feb, shaded
- Mar, shaded
- Apr, shaded
- May, shaded
- Jun, shaded
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec, shaded
Summary
Hymenocallis tubiflora is a plant species from Trinidad and northern South America. It is reported from Trinidad, Venezuela, Guyana, Suriname, French Guiana, and northern Brazil. The name was originally coined in 1812, the description based on a specimen grown at Kew Botanical Garden in London, the bulb having been seized by British sailors from a French ship captured by the Royal Navy in 1803.
Quoted from Wikipedia, "Hymenocallis tubiflora", CC BY-SA 4.0.
About the genus · Hymenocallis
Hymenocallis (US) or (UK) is a genus of flowering plants in the Amaryllidaceae family native to the Americas.
Quoted from Wikipedia, "Hymenocallis", CC BY-SA 4.0.
Cultivation
Grouped as a bulb, tuber or caudex, listed under the family Amaryllidaceae in the archetype table, and Kew describes it as “bulbous geophyte”.
Seasons
The rain rule reads a sharp season: 70% of the median year's rain (2,101 mm of 2,732 mm) falls in December to June. The temperature curve is flat, 1.8 °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 habitat lies within 10° of the equator, where the shift rule does not apply, so they are not shifted for a collection elsewhere.
Rain
2,732 mm in the median year at the habitat, 2,101 mm of it December to June. Wettest month May at 418 mm, driest month September at 71 mm. Across the grid cells of the range the year's total runs 1,820 mm to 3,453 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 2,634 mm, is the year's rain at the top of the page; the 2,732 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: 26 to 38 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 40).
Warmth and air
Coldest: the 1st-percentile night over 44 years at a typical spot in the range is 20.6 °C, the absolute minimum 18.3 °C, no frost in 44 years (NASA POWER daily minima). Warmest: the 99th-percentile day is 35.4 °C. Monthly means: the coldest month's mean nightly low 21.9 °C in July (across the grid cells of the range 20.9 °C to 23.5 °C), the warmest month's mean daily high 31.6 °C in October (median year across the grid cells of the range, CHELSA). Cold floor: 20.6 °C, which is the 1st-percentile night over 44 years at a typical spot in the range (NASA POWER).
Relative humidity at the habitat: 64 to 71% 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 -45 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.
Group. Listed under the family Amaryllidaceae in the archetype table, and Kew describes it as “bulbous geophyte”. A group is taken only where Kew's description of the species agrees with the table's listing. The table gives no figure and no prose; the cold floor is the habitat's alone.
Climate across the habitat
Habitat months, northern hemisphere
Mean daily high from 28 °C in Jan and Feb to 32 °C in Oct; mean nightly low from 22 °C in Jan, Feb, Mar, Jun, Jul, Aug and Sep to 23 °C in Apr, May, Oct, Nov and Dec. The cold quarter, Jun to Aug, is the three months around the coldest month's mean nightly low, around the first of the 7 months that tie for it. 2,732 mm of rain in the median year (the twelve monthly medians added), the wettest month May. The bands show the 10th to 90th percentile across 66 habitat cells. Over 44 years at a typical spot in the range (NASA POWER) the absolute minimum was 18.3 °C and the 99th-percentile day 35.4 °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 | 28 / 26–29 | 28 / 26–29 | 29 / 27–30 | 29 / 27–30 | 29 / 27–29 | 29 / 27–29 | 29 / 27–29 | 30 / 28–30 | 31 / 28–32 | 32 / 28–33 | 31 / 27–32 | 29 / 26–30 |
| Night °C | 22 / 21–23 | 22 / 21–23 | 22 / 21–24 | 23 / 22–24 | 23 / 22–24 | 22 / 21–24 | 22 / 21–24 | 22 / 21–24 | 22 / 21–24 | 23 / 22–24 | 23 / 22–24 | 23 / 22–24 |
| Rain mm | 291 / 111–418 | 243 / 84–330 | 255 / 57–329 | 347 / 100–444 | 418 / 159–556 | 316 / 247–417 | 220 / 182–255 | 143 / 117–233 | 71 / 51–148 | 75 / 59–150 | 122 / 82–203 | 231 / 158–353 |
| DLI | 26 / 24–33 | 28 / 26–37 | 30 / 28–40 | 29 / 27–38 | 26 / 25–35 | 27 / 26–32 | 31 / 30–34 | 35 / 34–37 | 38 / 37–40 | 38 / 36–39 | 33 / 32–34 | 28 / 26–31 |
| RH % | 69 / 66–72 | 67 / 64–70 | 66 / 63–70 | 68 / 65–71 | 70 / 68–73 | 71 / 69–73 | 69 / 67–71 | 67 / 65–70 | 64 / 61–68 | 64 / 60–68 | 66 / 62–69 | 69 / 65–72 |
How this section is made
Natural habitat
How this section is made
Photographs
Photographs: (c) Guillaume Delaitre, some rights reserved (CC BY) (6).
Related
Similar habitat climate The 6 nearest by mean daily high, mean nightly low and rain, month by month. How.
Eperua falcata Fabaceae Photo: CC BY, Guillaume Delaitre Billbergia violacea Bromeliaceae 
Goeppertia elliptica Marantaceae Photo: CC BY, Gerry van Tonder Pachylecythis zabucajo Lecythidaceae 
Maxillaria uncata Orchidaceae Photo: CC BY, Guillaume Delaitre
Chamaecostus congestiflorus Costaceae Photo: CC BY, Guillaume DelaitreOther Hymenocallis 16 in the reference
Hymenocallis acutifolia Amaryllidaceae Photo: CC BY, Rodrigo Osvaldo Borbon Vázquez Hymenocallis arenicola Amaryllidaceae 
Hymenocallis caribaea Caribbean spider-lily Photo: CC BY, fmunoz
Hymenocallis concinna Amaryllidaceae Photo: CC BY, Alexis López Hernández
Hymenocallis coronaria Cahaba lily Photo: CC BY, Reid Hardin
Hymenocallis duvalensis Dixie spiderlily Photo: CC BY, Brandon Corder
Hymenocallis eucharidifolia Amaryllidaceae Photo: CC0, Daderot
Hymenocallis harrisiana Peruvian daffodil Photo: CC BY, Eduardo Manuel Quiroz Lozano
Hymenocallis latifolia Broadleaf spider lily Photo: CC BY, Ashwin Srinivasan
Hymenocallis liriosme Spring spiderlily Photo: CC0, author not stated
Hymenocallis littoralis Beach Spider Lily Photo: CC BY, Alex Novarro
Hymenocallis occidentalis Carolina spider-lily Photo: CC0, author not stated all 17 ›Names & registers
Also known as Hymenocallis borskiana; Hymenocallis borskiani; Hymenocallis boschiana; Hymenocallis guianensis; Hymenocallis guianensis var. guianensis and 19 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; 4 records within 1 km of a botanic garden, herbarium or zoo left out (4 at a botanic garden or arboretum; Wikidata's list)climate answeredasked 2026-10-22climate.extremes answeredasked 2026-10-22NASA POWER (MERRA-2) daily 1981–2024, cell 4.50_-52.500, lapse-corrected -45 m at 6.5 °C/kmwikidata answeredasked 2026-10-22wikipedia 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 2026-10-22none of the photographs on this page is credited to GBIF: those shown are other sources', and GBIF's were the same photographs or were set aside by the photograph rulesopenalex 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 16 datasets via GBIF.org; each carries its own licence.