Globally near threatened (NT) (Source: IUCN Red List)

Classification
Within iNaturalist.org

All Names

  • English
    • Horse chestnut
  • Scientific Names
    • Aesculus hippocastanum
  • German
    • Gewöhnliche Rosskastanie
    • Gemeine Rosskastanie
    • Weiße Rosskastanie
  • Portuguese
    • Castanheiro-da-índia
  • Spanish
    • Castaño de Indias
  • Vermont Flora Codes
    • AESHIP
  • French
    • Marronier

Guide Colors

Extras

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Recent observations

Photos / Sounds

What

Horse chestnut Aesculus hippocastanum

Observer

owenclarkin

Date

October 20, 2012 10:29 AM EDT

Description

growing in understory

Photos / Sounds

Square

What

Horse chestnut Aesculus hippocastanum

Observer

owenclarkin

Date

October 24, 2013

Place

Ottawa (Google, OSM)

Description

Naturalized Horsechestnut seedling in suburban woods

Photos / Sounds

What

Horse chestnut Aesculus hippocastanum

Observer

stephen_thorpe

Date

December 19, 2015

Description

Locality: NEW ZEALAND AK, suburb of Newmarket, Lumsden Green.

Habitat: One cultivated tree in park. Some wild(?) growth around the base of the tree.

Identification: Aesculus hippocastanum L., 1753.

Photos / Sounds

What

Horse chestnut Aesculus hippocastanum

Observer

stephen_thorpe

Date

December 16, 2015

Description

Locality: NEW ZEALAND AK, suburb of Grafton, Outhwaite Park.

Habitat: One cultivated tree in park.

Identification: Aesculus hippocastanum L., 1753.

Photos / Sounds

No photos or sounds

What

Horse chestnut Aesculus hippocastanum

Observer

katyjach

Date

the past

Place

(Somewhere...)

Photos / Sounds

Square

What

Horse chestnut Aesculus hippocastanum

Observer

katyjach

Date

October 27, 2015 03:17 PM PDT

Photos / Sounds

Square

What

Horse chestnut Aesculus hippocastanum

Observer

robcruickshank

Date

December 13, 2015 08:30 PM TOT

Description

Leaf damage, caused by a hailstorm.

Photos / Sounds

What

Horse chestnut Aesculus hippocastanum

Observer

neilvinson

Date

November 26, 2015 12:39 PM AST

Photos / Sounds

What

Horse chestnut Aesculus hippocastanum

Observer

kimsen

Date

November 24, 2015 03:21 PM EST

Photos / Sounds

Square

What

Horse chestnut Aesculus hippocastanum

Observer

jcombs

Date

April 18, 2015

Photos / Sounds

Square

What

Horse chestnut Aesculus hippocastanum

Observer

nzwide

Date

November 11, 2015

Photos / Sounds

What

Horse chestnut Aesculus hippocastanum

Observer

nzwide

Date

November 12, 2015
View all observations

Description from Wikipedia

Aesculus hippocastanum is a large deciduous, synoecious tree, commonly known as horse-chestnut or conker tree.

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Conservation Summary

  • Globally
    near threatened (NT) (Source: IUCN Red List)
    The Horse Chestnut (Aesculus hippocastanum) is a major amenity tree native to Greece and the central Balkan peninsula and planted across Europe. It has been significantly damaged by the leaf miner moth Cameraria ohridella across its entire native and introduced range; the extent of decline caused by infestation is thought to be insignificant, however, compared to the multiple threats the Pindus Mountain mixed forest ecoregion is facing. The species is threatened or likely to be extinct across most of its native range: it is Endangered in Bulgaria (Petrova and Vladimirov 2009, Bulgarian Academy of Sciences and Ministry of Environment and Water 2011), where it remains in two locations, and in Greece, where the declining population is estimated at only 259-407+ trees; it is probably Extinct in Albania. The status of the population in Macedonia is unknown, but given the small range in the country, it is likely to be small. The species occurs in protected areas in Greece and Bulgaria, including national parks/reserves and Natura 2000 sites, although mining, deforestation, tourism development and other threats still impact some national parks. Given the widespread and varied threats across its native range, the population is almost certainly suffering a continuing decline, though the overall decline has not been quantified. Although the total population size across its native range has not been estimated, it is unlikely to consist of more than 10,000 mature individuals and may even be fewer than 2,500 mature individuals. Based on the subpopulation structure in Greece and the ongoing threats across its range, all wild subpopulations are likely smaller than 1,000 individuals. At the European level, Aesculus hippocastanum is therefore assessed as Vulnerable C2a(i). It also qualifies for Vulnerable C2a(i) in its EU 27 range (Bulgaria and Greece), where the majority of the native population is found. There is likely to be immigration of propagules into its native range as it has been introduced throughout Europe, so the original category is downlisted to Near Threatened in both Europe and the EU 27. Recommended conservation measures include controlling the Cameraria ochridella leaf miner, enforcement of protection regimes in nature reserves, regulating human impacts on its habitats, and ex situ cultivation using genetic material from remaining natural populations. Research is needed on the genetic similarity between native and introduced subpopulations, to determine if introduced subpopulations likely to be the source of propagules may indeed help augment declining native populations.
No range data available.
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