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

Classification
Within iNaturalist.org

All Names

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

Guide Colors

Extras

Taxonomic changes »

Taxon schemes »

Make taxonomic Flickr tags for this taxon »

Invite photos from other sites »

Wikipedia taxobox »

Tree Browser »

Search descendant taxa »

Embed a widget for this taxon on your website »

Recent observations

Photos / Sounds

Square

What

horse chestnut Aesculus hippocastanum

Observer

faited

Date

May 24, 2015 06:36 PM EDT

Place

(Somewhere...)

Photos / Sounds

Square

What

horse chestnut Aesculus hippocastanum

Observer

dmm5398

Date

June 16, 2015 11:09 AM EDT

Description

Growing near the urban foest. A welcomed native. Hope it propagates more!

Photos / Sounds

18554236198 28ac61c79a s

What

horse chestnut Aesculus hippocastanum

Observer

annemirdl

Date

May 12, 2015

Photos / Sounds

No photos or sounds

What

horse chestnut Aesculus hippocastanum

Observer

bobilu

Date

April 14, 2015

Photos / Sounds

No photos or sounds

What

horse chestnut Aesculus hippocastanum

Observer

lauradebonaire

Date

June 6, 2015

Photos / Sounds

What

horse chestnut Aesculus hippocastanum

Observer

fumitaka

Date

June 1, 2015

Description

Tree about 15ft high; leaves palmately compound growing in groups of five with the center leaflet as the largest one; pinnate venation and serrated margins; smooth bark with parallel bumps; gray bark; flowers growing in clumps with five fused petals; white on the rim and red in the center; five white protruding stamens with dark orange tips; flowers growing off single stem that branches off

Hippocastanaceae family
Horse Chestnut

Photos / Sounds

No photos or sounds

What

horse chestnut Aesculus hippocastanum

Observer

kapenrod

Date

the past

Photos / Sounds

Square

What

horse chestnut Aesculus hippocastanum

Observer

field_daze

Date

May 24, 2015 09:44 PM EDT

Photos / Sounds

Square

What

horse chestnut Aesculus hippocastanum

Observer

stegelbe

Date

May 25, 2015

Photos / Sounds

No photos or sounds

What

horse chestnut Aesculus hippocastanum

Observer

whodunnit10

Date

the past

Photos / Sounds

What

horse chestnut Aesculus hippocastanum

Observer

raudel

Date

May 23, 2015

Description

~75 foot tall tree. Alternately, palmately compound leaves in leaflets of 7, obovate and cuneate- narrow at base and wide before the tip, irregularly serrated. Bark is dark brown, thin plates separated by shallow fissures. Flowers white, 5 petals- some with red-spotted and others yellow-spotted, borne in terminal panicles, 7 stamens- longer than the petals.

Photos / Sounds

What

horse chestnut Aesculus hippocastanum

Observer

dmcooperberg

Date

May 24, 2015

Description

25 foot tree. Leaves are opposite and palmately compound, with 7 leaflets. Old flowers present in erect panicles with fruit ripening. Fruit is a green spiked capsule. Flowers bilaterally symmetrical with 8 stamens, 1 carpel and a superior ovary. Flowers have 5 united petals. 5 sepals present.

View all observations

Description from Wikipedia

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

Logo eee 15px

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.