Uebelmannia pectinifera, Diamantina, BR-MG, BR

Uebelmannia pectinifera Buining

Cactaceae

Climate known 36 photographs Cactus or succulent

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

Uebelmannia pectinifera is a species of plant in the family Cactaceae. It is a succulent cactus subshrub endemic to Minas Gerais state in southeastern Brazil. Its natural habitats are dry savanna and rocky areas. It is threatened by habitat loss.

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

About the genus · Uebelmannia

Uebelmannia is genus of cacti, native to southeast Brazil. In a 2023 classification of the tribe Cereeae, it was placed as the only genus in the subtribe Uebelmanniinae, having formerly been placed in the subtribe Rebutiinae.

Text from Wikipedia, “Uebelmannia”, CC BY-SA 4.0, quoted as written.

Family

Cactaceae

Described by

Buining

Native to

Brazil Southeast

Wild records

42 in range· 19 open

At a glance

Warmest month

26°C

Feb, mean day; nights 17 °C (CHELSA)

Rain

1260mm/yr

8 wet months · peak Dec 284 mm (CHELSA)

Light

26–38DLI

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 cactus or succulent by the genus Uebelmannia, which is reliably one kind of plant (archetype table). Rain rule: a summer growing season, May to July and September in the northern hemisphere (November to January and March at the habitat, southern). Habitat rain 1260 mm a year, wettest December at 284 mm, driest June at 7 mm (habitat calendar, southern hemisphere). Open sky over the habitat: 26 to 38 mol/m²/day. Cold floor 7.9 °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 Uebelmannia pectinifera subsp. flavispina Uebelmannia; Uebelmannia pectinifera subsp. horrida Uebelmannia; Uebelmannia pectinifera var. multicostata Uebelmannia; Uebelmannia pectinifera var. pseudopectinifera Uebelmannia.

Cultivation

Grouped as a cactus or succulent by the genus Uebelmannia, which is reliably 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: a summer growing season, May to July and September in the northern hemisphere (November to January and March at the habitat, southern).

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

The rain rule reads a summer growing season: 70% of the year's rain (904 mm of 1260 mm) falls in November to January and March, warmer than the year (wet-season mean 21.4 °C against a yearly mean of 20.0 °C). Months are the habitat's, southern hemisphere; shifted six months for a northern-hemisphere collection: May to July and September.

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 1260 mm a year, wettest December at 284 mm, driest June at 7 mm (habitat calendar, southern hemisphere).

This species’ habitat figures, with their source.

1260 mm a year at the habitat, 904 mm of it November to January and March. Wettest month December at 284 mm, driest June at 7 mm. Across the envelope cells the year's total runs 1136 mm to 1554 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 38 mol/m²/day.

This species’ habitat figures, with their source.

Open sky over the habitat: 26 to 38 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 25, the highest 90th-percentile month 40).

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 7.9 °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 7.9 °C, the absolute minimum 3.4 °C, no frost in 44 years (NASA POWER daily minima). Warmest: the 99th-percentile day is 34.2 °C. Monthly means: coldest night 11.1 °C in July (across the envelope cells 9.8 °C to 13.4 °C), warmest day 26.4 °C in February (median year across the envelope cells, CHELSA). Cold floor: 7.9 °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: 57 to 65% 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 15 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	26 / 24–27	26 / 25–28	26 / 24–27	25 / 23–26	24 / 22–25	22 / 21–24	22 / 20–23	24 / 22–25	25 / 23–27	26 / 24–27	25 / 24–26	25 / 24–27
Night °C	17 / 16–19	17 / 16–19	17 / 16–19	16 / 15–18	14 / 13–16	12 / 10–14	11 / 10–13	12 / 11–14	14 / 13–16	16 / 15–17	16 / 16–18	17 / 16–19
Rain mm	224 / 198–265	125 / 113–171	174 / 153–210	52 / 46–70	18 / 15–27	7 / 6–11	7 / 5–10	9 / 7–14	31 / 27–43	107 / 100–132	222 / 203–261	284 / 253–334
DLI	36 / 35–38	38 / 38–40	34 / 33–34	31 / 30–31	28 / 27–28	26 / 25–27	27 / 26–28	32 / 31–33	36 / 35–37	36 / 36–37	33 / 32–34	33 / 31–35
RH %	63 / 61–65	61 / 59–63	64 / 61–66	63 / 60–65	61 / 58–63	60 / 57–62	59 / 56–61	57 / 55–59	57 / 55–59	59 / 57–62	64 / 61–66	65 / 63–67

Each figure is the median across the 15 grid cells holding the 18 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 2163:2725 (-18.175, -43.725). Over 44 years there: absolute minimum 3.4 °C, 1st-percentile night 7.9 °C, 99th-percentile day 34.2 °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 15 distinct grid cells holding the 18 in-range records; extremes and elevation at the typical cell 2163:2725 (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 -18.00_-43.750, lapse-corrected +109 m at 6.5 °C/km. Elevation: ETOPO 2022, 1176 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.

NativeBrazil Southeast

Kew's description“succulent shrub” · “seasonally dry tropical”· quoted from WCVP, RBG Kew (CC BY 4.0); not derived here

Map marker-18.103, -43.541 · in the densest population, 42 records (100% of those in range)

Evidence usedThe map marker and the climate envelope rest on all 42 georeferenced records inside the native range; the map shows only the 19 openly licensed ones, which alone would put the marker 14 km away. 4 records outside the range (gardens, roadsides, misidentifications) ignored. 24 in-range records are placed to worse than 10 km and stay on the map but off the climate.

The map markerthe map marker: the openly licensed record nearest the middle of the densest 1° population of the 42 in-range records; it decides nothing.

Photographs

Photographs: (c) william_hoyer, some rights reserved (CC BY) (6); (c) Rosario Douglas, some rights reserved (CC BY) (2).

Photographs: iNaturalist and Wikimedia Commons 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 Uebelmannia pectinifera, most cited first, from OpenAlex (CC0). A mention, not a cultivation source: nothing on this page is drawn from them.

Novel seed coat lignins in the C actaceae: structure, distribution and implications for the evolution of lignin diversity

Fang Chen, Yuki Tobimatsu, Lisa A. Jackson, Jin Nakashima (2012) · The Plant Journal

Molecular phylogeny of Gymnocalycium (Cactaceae): Assessment of alternative infrageneric systems, a new subgenus, and trends in the evolution of the genus

Pablo Demaio, Michael H. J. Barfuss, Roberto Kiesling, Walter Till (2011) · American Journal of Botany

A phylogenetic analysis of Pfeiffera and the reinstatement of Lymanbensonia as an independently evolved lineage of epiphytic Cactaceae within a new tribe Lymanbensonieae

Nadja Korotkova, Leonie Zabel, Dietmar Quandt, Wilhelm Barthlott (2010) · Willdenowia - Annals of the Botanic Garden and Botanical Museum Berlin-Dahlem

The iconic cactus of the Caatinga dry forest, Cereus jamacaru (Cactaceae) has high sphingophily specialization and pollinator dependence

Sinzinando Albuquerque‐Lima, Arthur Domingos‐Melo, Paulo Milet‐Pinheiro, Daniela Maria do Amaral Ferraz Navarro (2023) · Anais da Academia Brasileira de Ciências

Polymorphic microsatellite markers for the rare and endangered cactus Uebelmannia pectinifera (Cactaceae) and its congeneric species

Evandro M. Moraes, Fernanda Witt Cidade, Gislaine Angélica Rodrigues Silva, Marlon C. Machado (2014) · Genetics and Molecular Research

A microendemic and enigmatic new cactus species from the campo rupestre of Minas Gerais, Brazil: Uebelmannia nuda (Cactaceae, Cactoideae)

Daniela C. Zappi, Nigel P. Taylor, Fabiane Nepomuceno Costa, Simone Nunes Fonseca (2024) · Taxon

Pollen‐feeding bees in Uebelmannia pectinifera subsp. pectinifera – reproductive biology of an endemic cactus from the campo rupestre of eastern Brazil

Mariana P. Sousa, Christiano Franco Verola, Suelma Ribeiro‐Silva, Daniela C. Zappi (2021) · Nordic Journal of Botany

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