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Hydrangea obtusifolia; photograph peganum from Henfield, England, CC BY-SA 2.0, via Wikimedia Commons CC BY-SApeganum from Henfield, England, CC BY-SA 2.0, via Wikimedia Commons

Hydrangea obtusifolia (Hu) Y.De Smet & C.Granados

Hydrangeaceae · China South-Central, China Southeast · listed by its genus as a temperate garden plant

No habitat climate
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Hydrangea obtusifolia, photograph peganum from Henfield, England, CC BY-SA 2.0, via Wikimedia CommonsHydrangea obtusifolia, photograph peganum from Small Dole, England, CC BY-SA 2.0, via Wikimedia Commons 3 photographs ›

About the genus · Hydrangea

Hydrangea is a genus of more than 70 species of flowering plants native to Asia and the Americas. Hydrangea is also used as the common name for the genus; some are also often called hortensia. The genus was first described from Virginia in North America, but by far the greatest species diversity is in eastern Asia, notably China, Korea, and Japan. More on Wikipedia ›

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

Cultivation

Grouped as a temperate garden plant, listed under the genus Hydrangea in the archetype table, and Kew describes it as “scrambling shrub”, “temperate”.

Nothing derived: no habitat climate for this species.
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.

Group. Listed under the genus Hydrangea in the archetype table, and Kew describes it as “scrambling shrub”, “temperate”. 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

No habitat climate can be derived: Only 1 distinct land cell of the climate grid holds an in-range record placed to within 10 km; three are needed for an envelope. 74 of the 75 in-range records are placed to worse than 10 km, or to no stated accuracy and fewer than three decimals or by something other than a person's observation, and cannot place a climate cell, though they count for the map and its marker.

Natural habitat

Native range as published by WCVP; the marker is where the records are densest and decides nothing.
Openly licensed records inside the range, framed on where they fall.
NativeChina South-Central, China Southeast · 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 marker32.089, 109.816 · in the densest population, 35 records (47% of those in range)
Kew's description“scrambling shrub” · “temperate” · quoted from WCVP, RBG Kew (CC BY 4.0); not derived here
Evidence usedThe map marker rests on all 75 georeferenced records inside the native range; the map shows only the 34 openly licensed ones, which alone would put the marker 67 km away. No climate across the range is derived for this species. 74 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 75 in-range records; it decides nothing. Records outside the native range, living specimens and records marked introduced are not used; which records count.

Photographs

Hydrangea obtusifolia, photograph 1did not loadHydrangea obtusifolia, photograph 2did not load

Photographs: peganum from Henfield, England, CC BY-SA 2.0, via Wikimedia Commons; peganum from Small Dole, England, CC BY-SA 2.0, via Wikimedia Commons.

Other Hydrangea 42 in the reference

Hydrangea alternifolia Hydrangea alternifolia Hydrangeaceae Photo: CC BY, pavlaki1968 Hydrangea ampla Chinese hydrangea-vine Hydrangea anomala Hydrangea anomala Japanese Climbing-hydrangea Photo: CC BY, 黃美滿Hydrangea arborescens Hydrangea arborescens Smooth hydrangea Photo: CC BY, Andrew ConboyHydrangea arguta Hydrangea arguta Kanawao Photo: CC BY, Kevin FaccendaHydrangea aspera Hydrangea aspera Rough-leaf hydrangea Photo: CC BY, 五色鳥Hydrangea barbara Hydrangea barbara Climbing hydrangea Photo: CC0, Odile VHydrangea bifida Hydrangea bifida Hydrangeaceae Photo: CC BY, Philippe GiabbanelliHydrangea bretschneideri Hydrangea bretschneideri Hydrangeaceae Photo: CC BY-SA, VonundzuHydrangea caerulea Hydrangea caerulea Hydrangeaceae Photo: CC BY-SA, Bouba at French WikipediaHydrangea cinerea Hydrangea cinerea Ashy hydrangea Photo: CC BY, sblumenHydrangea fauriei Hydrangea fauriei Hydrangeaceae Photo: CC BY, Cheng-Te Hsu all 43 ›

Names & registers

Also known as Decumaria sinensis; Pileostegia obtusifolia; Schizophragma obtusifolium. (GBIF Backbone)

GBIFPOWOIPNIWFOWikidata

The record

Family
Hydrangeaceae
Described by
(Hu) Y.De Smet & C.Granados
Native to
China South-Central, China Southeast
Wild records
75 in range · 34 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 2026-10-22
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; 7 records within 1 km of a botanic garden, herbarium or zoo left out (6 at a botanic garden or arboretum, 1 at a herbarium; Wikidata's list)
Habitat climate climate nothing to reportasked 2026-10-22only 1 distinct land cell of the climate grid holds an in-range record placed to within 10 km; three are needed for an envelope
Wikidata wikidata answeredasked 2026-10-22
Wikipedia wikipedia nothing to reportasked 2026-10-22
iNaturalist taxon inat.taxon not asked
iNaturalist photographs, wild inat.photos.wild not asked
iNaturalist photographs, cultivated inat.photos.cultivated not asked
GBIF media gbif.media nothing to reportasked 2026-10-22
Wikimedia Commons commons 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 8 datasets via GBIF.org; each carries its own licence.

Cultifolio

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