Urceolina amazonica, Saba, Caribbean Netherlands

Urceolina amazonica (Linden ex Planch.) Christenh. & Byng

Amazon lily

Climate known 36 photographs Bulb, tuber or caudex

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

Urceolina amazonica, formerly known as Eucharis amazonica, is a species of flowering plant in the family Amaryllidaceae, native to Peru. It is cultivated as an ornamental in many countries and naturalized in Venezuela, Mexico, the West Indies, Ascension Island, Sri Lanka, Fiji, the Solomon Islands and the Society Islands. The English name Amazon lily is used for this species, but is also used for some other species of the genus Urceolina.

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

About the genus · Urceolina

Urceolina is a genus of South American plants in the amaryllis family native to Bolivia, Brazil, Colombia, Costa Rica, Ecuador, Guatemala, Panama, and Peru. It has also been introduced to many South and Central American states, as well as India and Sri Lanka. The formerly accepted genera Eucharis and Caliphruria are now regarded as synonyms of this genus. More on Wikipedia ›

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

Family

Amaryllidaceae

Described by

(Linden ex Planch.) Christenh. & Byng

Native to

Peru

Wild records

17 in range· 11 open

At a glance

Warmest month

27°C

Feb, mean day; nights 20 °C (CHELSA)

Rain

3120mm/yr

12 wet months · peak Dec 331 mm (CHELSA)

Light

26–34DLI

mol/m²/day, winter to summer, open sky (CHELSA shortwave)

In short condensed by rule from the cultivation cards · not written by a person

Grouped as a bulb, tuber or caudex by Amaryllidaceae, which is usually but not always one kind of plant (archetype table). Rain rule: no season, 70% of the rain takes 8 months (October to May at the habitat (not shifted)). Habitat rain 3120 mm a year, wettest December at 331 mm, driest August at 155 mm (habitat calendar, southern hemisphere). Open sky over the habitat: 26 to 34 mol/m²/day. Cold floor 16.9 °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 Eucharis amazonica Linden; Eucharis amazonica Linden ex Planch.

Cultivation

Grouped as a bulb, tuber or caudex by Amaryllidaceae, which is usually but not always one kind of plant (archetype table). The table holds no figure for this group, which spans too much for one minimum; the cold floor is the habitat's alone, and no prose comes from the table.

Its year Rain rule: no season, 70% of the rain takes 8 months (October to May at the habitat (not shifted)).

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

The rain rule reads no season: 70% of the year's rain (2384 mm of 3120 mm) takes 8 months, October to May. Mean temperature moves 1.6 °C between the warmest and coldest month. Months are the habitat's, southern hemisphere, within 10° of the equator; with no thermal season there there is no season to reverse, so they are not shifted for a collection elsewhere.

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 3120 mm a year, wettest December at 331 mm, driest August at 155 mm (habitat calendar, southern hemisphere).

This species’ habitat figures, with their source.

3120 mm a year at the habitat, 2384 mm of it October to May. Wettest month December at 331 mm, driest August at 155 mm. Across the envelope cells the year's total runs 1665 mm to 4788 mm (10th to 90th percentile of each cell's own year) (median year across the envelope cells, CHELSA; habitat calendar, southern 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: 26 to 34 mol/m²/day.

This species’ habitat figures, with their source.

Open sky over the habitat: 26 to 34 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 36).

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 16.9 °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 16.9 °C, the absolute minimum 15.0 °C, no frost in 44 years (NASA POWER daily minima). Warmest: the 99th-percentile day is 32.4 °C. Monthly means: coldest night 18.1 °C in July (across the envelope cells 11.6 °C to 21.1 °C), warmest day 26.9 °C in February (median year across the envelope cells, CHELSA). Cold floor: 16.9 °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: 67 to 72% 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 16 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	27 / 20–29	27 / 21–29	27 / 21–29	26 / 21–29	26 / 20–28	25 / 20–27	25 / 19–27	26 / 20–28	27 / 21–29	27 / 21–29	27 / 21–29	27 / 21–29
Night °C	20 / 14–23	20 / 14–23	20 / 14–23	20 / 14–23	19 / 13–22	19 / 12–22	18 / 12–21	18 / 12–22	19 / 12–22	19 / 13–23	20 / 14–23	20 / 14–23
Rain mm	282 / 166–547	318 / 184–453	323 / 236–473	312 / 169–468	276 / 107–473	210 / 66–529	164 / 56–457	155 / 61–377	207 / 103–386	262 / 145–395	280 / 159–464	331 / 162–510
DLI	31 / 27–33	30 / 27–33	29 / 27–33	28 / 27–31	28 / 25–29	26 / 23–28	27 / 24–30	32 / 29–33	34 / 31–35	33 / 32–36	31 / 29–33	31 / 28–32
RH %	67 / 64–74	69 / 64–74	70 / 65–74	71 / 66–73	71 / 65–73	72 / 65–74	71 / 63–72	69 / 62–72	70 / 63–72	70 / 65–71	70 / 65–73	69 / 65–74

Each figure is the median across the 16 grid cells holding the 17 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 1812:2051 (-0.625, -77.425). Over 44 years there: absolute minimum 15.0 °C, 1st-percentile night 16.9 °C, 99th-percentile day 32.4 °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 16 distinct grid cells holding the 17 in-range records; extremes and elevation at the typical cell 1812:2051 (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 -0.50_-77.500, lapse-corrected -452 m at 6.5 °C/km. Elevation: ETOPO 2022, 716 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.

NativePeru· introduced: Ascension, India, Sri Lanka, Solomon Is., Fiji, Society Is., Mexico Central, Mexico Southwest, Mexico Southeast, Dominican Republic, Haiti, Jamaica, Leeward Is. AB Ant, Puerto Rico, Trinidad-Tobago, Venezuelan Antilles, Windward Is., Venezuela

Kew's description“bulbous geophyte” · “wet tropical”· quoted from WCVP, RBG Kew (CC BY 4.0); not derived here

Map marker-1.066, -77.6 · in the densest population, 8 records (47% of those in range)

Evidence usedThe map marker and the climate envelope rest on all 17 georeferenced records inside the native range; the map shows only the 11 openly licensed ones, which alone would put the marker 4 km away. 148 records outside the range (gardens, roadsides, misidentifications) ignored.

The map markerthe map marker: the openly licensed record nearest the middle of the densest 1° population of the 17 in-range records; it decides nothing.

Photographs

Photographs: (c) Dan Schofield, some rights reserved (CC BY) (2); (c) Matteo Cassella, some rights reserved (CC BY-SA) (3); (c) Alfredo Gutierrez Dipaz, some rights reserved (CC BY) (3).

Photographs: iNaturalist 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 Urceolina amazonica, most cited first, from OpenAlex (CC0). A mention, not a cultivation source: nothing on this page is drawn from them.

Phyto-constituents of the Dichloromethane Extracts of the Bulbs of Selected Genera in the Family Amaryllidaceae

M. E. Bassey, Imoh I. Johnny, Ogechi Queeneth Iwu, Omodot Timothy Umoh (2024) · Asian Plant Research Journal

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