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Diplacus grandiflorus; photograph (c) graham_coop, some rights reserved (CC BY) CC BY(c) graham_coop, some rights reserved (CC BY) · observed growing wild · 2026-06-10

Diplacus grandiflorus (Lindl. & Paxton) Hérincq

Largeflower bush monkeyflower

Phrymaceae · California

Cited as Kew's World Checklist cites it, Diplacus grandiflorus (Lindl. & Paxton) Hérincq: GBIF's backbone key for this page carries the name with another author, (Lindl.) Groenland.

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Diplacus grandiflorus, photograph author not stated, no rights reservedDiplacus grandiflorus, photograph (c) Adam Kamal, some rights reserved (CC BY)Diplacus grandiflorus, photograph (c) Amelia Tauber, some rights reserved (CC BY)Diplacus grandiflorus, photograph (c) graham_coop, some rights reserved (CC BY)Diplacus grandiflorus, photograph (c) graham_coop, some rights reserved (CC BY)Diplacus grandiflorus, photograph (c) Amelia Tauber, some rights reserved (CC BY) 75 photographs ›
Habitat figures
Cold floor (1 night in 100)
-3.9°C
Record low -9.9 °C in 44 years, at a typical spot in the range NASA POWER
Warmest month, mean daily high
32°C
Jul at the habitat CHELSA
Rain a year (median across the range)
1,606mm
8 months of 25 mm or more in the median year CHELSA
Open-sky light
13–53DLI
Lowest to highest month (DLI) CHELSA
The year in your months, northern hemisphere
  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec
Wet winters: the rain comes November to March, read as a winter growing season. rain rule, CHELSA
Northern hemisphere unless you set your site. The chart is in the habitat's months.

Summary

Diplacus grandiflorus, the large-flowered bush-monkeyflower, is a species of flowering plant. It is a subshrub or shrub endemic to the northern Sierra Nevada of California. It grows on steep canyon banks and rocky hillsides from 90 to 1530 (1830) meters elevation.

Quoted from Wikipedia, "Diplacus grandiflorus", CC BY-SA 4.0.

About the genus · Diplacus

Diplacus is a genus of flowering plants in the family Phrymaceae, which was traditionally placed in family Scrophulariaceae. It includes 49 species native to the western United States and northwestern Mexico. Most prefer dry and rocky areas.

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

Cultivation

Seasons

The rain rule reads a winter growing season: 70% of the median year's rain (1,252 mm of 1,581 mm) falls in November to March, cooler than the year (wet-season mean 7.9 °C against a yearly mean of 14.3 °C). Months are the habitat's, northern hemisphere; shifted six months for a southern-hemisphere collection: May to September.

Rain

1,581 mm in the median year at the habitat, 1,252 mm of it November to March. Wettest month December at 303 mm, driest month July at 1 mm; 2 months under 5 mm. Across the grid cells of the range the year's total runs 682 mm to 2,051 mm, the 10th to 90th percentile of each cell's own year. The median of the cells' own yearly totals, 1,606 mm, is the year's rain at the top of the page; the 1,581 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: 13 to 53 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 12, the highest 90th-percentile month 53).

Warmth and air
Temperature

Coldest: the 1st-percentile night over 44 years at a typical spot in the range is -3.9 °C, the absolute minimum -9.9 °C, 1,209 frost nights in 44 years, 27.5 a year (NASA POWER daily minima). Warmest: the 99th-percentile day is 39.8 °C. Monthly means: the coldest month's mean nightly low 2.2 °C in January and December (across the grid cells of the range -1.9 °C to 4.4 °C), the warmest month's mean daily high 31.8 °C in July (median year across the grid cells of the range, CHELSA). Cold floor: -3.9 °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: 44 to 58% 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 -80 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

Habitat climate of Diplacus grandiflorus through the yearWarmest month July, mean daily high 32 °C; coldest months January and December, mean nightly low 2.2 °C; 1,581 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, northern hemisphere.-20°-10°0°10°20°30°40°50°frost39.8° 99th-percentile day, NASA POWER-9.9° lowest night in 44 years, NASA POWER°C · day and nightcold quarter0100200300400mm rainDLI 13–53RH 44–58%JanFebMarAprMayJunJulAugSepOctNovDec
day night rain medians and 10th–90th percentile across 158 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 °C11 / 7–1413 / 8–1515 / 10–1818 / 14–2123 / 19–2628 / 23–3132 / 27–3431 / 27–3428 / 24–3022 / 19–2515 / 11–1811 / 7–14
Night °C2 / -2–43 / -2–54 / 0–76 / 2–810 / 6–1213 / 10–1516 / 13–1816 / 13–1814 / 11–1510 / 6–125 / 1–72 / -2–5
Rain mm269 / 142–353254 / 129–323225 / 106–289122 / 43–15770 / 14–9721 / 3–291 / 1–34 / 1–724 / 8–3187 / 33–115201 / 81–265303 / 124–397
DLI15 / 14–1820 / 19–2330 / 29–3339 / 39–4347 / 46–5052 / 52–5353 / 52–5348 / 47–4838 / 37–4027 / 26–3017 / 16–2013 / 12–16
RH %57 / 56–5958 / 57–6057 / 56–5954 / 52–5651 / 49–5347 / 44–4944 / 41–4744 / 42–4846 / 44–4950 / 48–5255 / 54–5757 / 56–60
How this section is made
Each figure is the median across the 158 grid cells holding the 577 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 1007:1173 (39.625, -121.325). Over 44 years there: absolute minimum -9.9 °C, 1st-percentile night -3.9 °C, 99th-percentile day 39.8 °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 158 distinct grid cells holding 577 of the 577 in-range records; extremes and elevation at the typical cell 1007:1173 (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 39.50_-121.250, lapse-corrected -80 m at 6.5 °C/km. Elevation: ETOPO 2022, 649 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.
NativeCalifornia · 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 marker39.381, -121.149 · in the densest population, 595 records (94% of those in range)
Kew's description“subshrub or shrub” · “temperate” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 635 georeferenced records inside the native range; the climate across the range on the 577 of them placed to within 10 km; the map shows only the 113 openly licensed ones, which alone would put the marker 7 km away. 58 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.
How this section is made
The map marker: the openly licensed record nearest the middle of the densest 1° population of the 635 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Diplacus grandiflorus, photograph 1did not loadDiplacus grandiflorus, photograph 2did not loadDiplacus grandiflorus, photograph 3did not loadDiplacus grandiflorus, photograph 4did not loadDiplacus grandiflorus, photograph 5did not loadDiplacus grandiflorus, photograph 6did not load

Photographs: author not stated, no rights reserved · CC0; (c) Adam Kamal, some rights reserved (CC BY); (c) Amelia Tauber, some rights reserved (CC BY) (2); (c) graham_coop, some rights reserved (CC BY) (2).

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

Calochortus monophyllus Calochortus monophyllus Yellow star-tulip Photo: CC0, author not statedFritillaria eastwoodiae Fritillaria eastwoodiae Butte County fritillary Photo: CC BY, Matt BergerCeanothus lemmonii Ceanothus lemmonii Lemmon's ceanothus Photo: CC BY, Adam J. SearcyBrodiaea sierrae Brodiaea sierrae Sierra Foothills brodiaea Photo: CC BY, Colin J PryorLimnanthes alba Limnanthes alba Meadowfoam Photo: CC BY, Arvel HernandezScutellaria californica Scutellaria californica California scullcap Photo: CC BY, gretchenparadis

Other Diplacus 16 in the reference

Diplacus aridus Diplacus aridus San Diego bush monkeyflower Photo: CC BY, Melanie J. DavisDiplacus aurantiacus Diplacus aurantiacus Orange bush monkey-flower Photo: CC BY, 66dodgeDiplacus × australis Diplacus × australis Phrymaceae Photo: CC0, Jasper ShideDiplacus bicolor Diplacus bicolor Harlequin monkeyflower Photo: CC BY, Jacob SaucierDiplacus bigelovii Diplacus bigelovii Bigelow's monkeyflower Photo: CC BY, Matt BergerDiplacus brevipes Diplacus brevipes Wide-throat yellow monkey-flower Photo: CC0, author not statedDiplacus calycinus Diplacus calycinus Kaweah River bush monkeyflower Photo: CC BY, SergeyDiplacus clevelandii Diplacus clevelandii Cleveland's bush monkeyflower Photo: CC BY, Eric Alan IsaacsonDiplacus kelloggii Diplacus kelloggii Kellogg's monkeyflower Photo: CC BY, Kyle ElshoffDiplacus linearis Diplacus linearis Chaparral bush monkeyflower Photo: CC BY, Daniel KennedyDiplacus longiflorus Diplacus longiflorus Southern bush monkeyflower Photo: CC BY, Matt BergerDiplacus parviflorus Diplacus parviflorus Island bush monkeyflower Photo: CC BY, Matt Berger all 17 ›

Names & registers

Also known as Diplacus aurantiacus var. grandiflorus; Diplacus bifidus; Diplacus glutinosus var. grandiflorus; Diplacus longiflorus var. grandiflorus; Mimulus aurantiacus var. grandiflorus and 3 more. (GBIF Backbone)

GBIFPOWOIPNIWFOWikidataWikipediaiNaturalist

The record

Family
Phrymaceae
Described by
(Lindl. & Paxton) Hérincq
Native to
California
Wild records
635 in range · 113 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 2026-10-22GBIF's key 5414617 is Diplacus grandiflorus (Lindl.) Groenland; the page links Kew's Diplacus grandiflorus (Lindl. & Paxton) Hérincq, and the name is cited as Kew cites it
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 answeredas of 2026-10-21GBIF occurrence download https://doi.org/10.15468/dl.hbdw64, of 2026-10-21
Habitat climate climate answeredasked 2026-10-22
Daily extremes (NASA POWER) climate.extremes answeredasked 2026-10-22NASA POWER (MERRA-2) daily 1981–2024, cell 39.50_-121.250, lapse-corrected -80 m at 6.5 °C/km
Wikidata wikidata answeredasked 2026-10-22IPNI and POWO linked by Kew's number for Diplacus grandiflorus (Lindl. & Paxton) Hérincq (the item's: IPNI 77321057-1, POWO 802117-1)
Wikipedia wikipedia answeredasked 2026-10-22
iNaturalist photographs, wild inat.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 2026-10-22
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 29 datasets via GBIF.org; each carries its own licence.

Cultifolio

Opening your plants…