Aesculus chuniana

Names and Synonyms

Common Names

• Assam Buckeye
• Assam Horse-chestnut
• Horse chestnut

Scientific Names

Accepted name

Synonyms

• Pavia punduana
• Aesculus chuniana
• Pawia punduana
• Aesculus lantsangensis
• Aesculus megaphylla
• Aesculus polyneura
• Aesculus polyneura var. dongchuanensis
• Aesculus rupicola

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant, Aesculus assamica, belongs to the kingdom Plantae and the phylum Streptophyta. Within the class Equisetopsida and subclass Magnoliidae, it is classified under the order Sapindales and the family Sapindaceae. Finally, it is categorized under the genus Aesculus.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a diverse geographical range spanning several key regions across Asia. Within China, its presence is noted in the South-Central and Southeast territories, as well as the high-altitude regions of Tibet. Moving into the Indian Subcontinent, it is specifically found within the state of Assam. Additionally, the species extends its reach into the neighboring country of Bangladesh. Consequently, its distribution covers a wide variety of ecological zones from mountainous areas to subtropical landscapes.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Aesculus assamica is characterized by a broad altitudinal distribution across its native habitats, spanning a significant vertical gradient. The species is found at elevations ranging from a minimum of 100 m AMSL to a maximum of 1700 m AMSL. Throughout its ecological range, it maintains a mean elevation of approximately 1050 m AMSL, suggesting a preference for mid-elevation montane environments where specific moisture and temperature regimes support its growth and medicinal potency.

Elevational range max:

1700 m AMSL

Elevational range mean:

1050 m AMSL

Elevational range min:

100 m AMSL

Life history

The life history of Aesculus assamica is characterized by its status as a perennial species, meaning it persists through multiple growing seasons and maintains its structural presence over a long duration. As a deciduous plant, it undergoes a seasonal cycle of leaf shedding, typically losing its foliage during the dormant period to conserve resources and protect itself from environmental stressors. This cyclical pattern of growth and dormancy defines its vegetative phase, where it establishes a robust perennial framework that supports its long-term survival within its natural habitat.

Deciduousness :

deciduous

Lifecycle :

perennial

Morphology

The morphology of Aesculus assamica is characterized by its robust growth form as a woody tree, reaching an average plant height of approximately 16.67 meters. Although it exhibits characteristics associated with lianas or vines in certain contexts, its primary structural classification is that of a self-supporting organism, rather than an obligatory or facultative climber. Furthermore, the plant displays an obligatory epiphytic nature in its growth habit.

Climber :

self-supporting

Epiphyte :

obligatory

Growth form :

tree

Plant height mean:

16.6666666666667 m

Woodiness :

woody

Physiology

The physiology of Aesculus assamica is characterized by a C3 photosynthetic pathway, indicating its adaptation to environments where carbon fixation occurs primarily through the Calvin cycle. Its foliar architecture is defined by an oblanceolate leaf form, featuring margins that are finely toothed and entirely lacking in thorns or spines. The dimensions of the leaves vary significantly, with lengths ranging from a minimum of 8 cm to a maximum of 25 cm, maintaining a mean length of 16 cm, while the width fluctuates between a minimum of 4 cm and a maximum of 12 cm. Furthermore, the plant exhibits a highly consistent Specific Leaf Area (SLA) of 235.0264901 cm²/g across its minimum, mean, and maximum recorded values, suggesting a specialized leaf mass distribution and structural investment optimized for its specific ecological niche.

Leaf form :

oblanceolate

Leaf length max:

25 cm

Leaf length mean:

16 cm

Leaf length min:

8 cm

Leaf margin :

finely toothed

Leaf spines :

no

Leaf thorns :

no

Leaf width max:

12 cm

Leaf width min:

4 cm

Photosynthetic pathway :

C3

Specific Leaf Area (SLA) min:

235.0264901 cm²/g

Reproduction

The reproduction of Aesculus assamicas is characterized by the development of inflorescences and the subsequent formation of fruit. The inflorescences of this species exhibit a specific size range, with lengths measuring between a minimum of 0.04 m and a maximum of 0.07 m. Following successful pollination, the plant produces fruits that vary slightly in size; these fruits have a minimum length of 4.5 cm and can reach a maximum length of 5 cm, with the average fruit length recorded at 4.75 cm.

Fruit length max:

5 cm

Fruit length mean:

4.75 cm

Fruit length min:

4.5 cm

Inflorescence length max:

0.07 m

Inflorescence length min:

0.04 m

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Aesculus assamica has 2 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include Assamicin I, Assamicin II.

Assamicin I

1. Bioorganic & medicinal chemistry letters

Assamicin II

1. Bioorganic & medicinal chemistry letters

Conditions

Aesculus assamica has 1 reported investigations on conditions identified across 0 scientific publications and several other databases. The most consistently reported conditions include infectious diseases.

Infectious diseases

1. Antibiotics (Basel, Switzerland)

Preparations

Aesculus assamica has 1 reported preparations identified across 0 scientific publications and several other databases. The most consistently reported preparations include poison fish.

Poison fish

1. Journal of ethnobiology and ethnomedicine