Japanese Larch

Names and Synonyms

Common Names

• Japanese larch

Scientific Names

Accepted name

Synonyms

• Larix kaempferi var. pendula
• Larix leptolepis var. murrayana
• Larix leptolepis var. minor
• Pinus japonica
• Abies kaempferi
• Abies leptolepis
• Pinus kaempferi
• Larix leptolepis pendula
• Larix kaempferi var. rubescens
• Larix leptolepis f. minor
• Larix leptolepis var. louchanensis
• Larix leptolepis f. pendula
• Larix leptolepis
• Larix kaempferi f. rubescens
• Larix kaempferi f. pendula
• Larix orientalis
• Pseudolarix kaempferi
• Pinus leptolepis
• Laricopsis kaempferi

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae within the phylum Streptophyta and the class Equisetopsida. It is further classified under the subclass Pinidae and the order Pinales, falling into the family Pinaceae. Ultimately, it is identified by the genus Larix.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a specific geographical distribution across several regions in Northern Europe. It can be found growing in the country of Denmark. Its presence is also noted within the borders of Finland. Additionally, the species is located in the Faroe Islands, which are known as Føroyar. Finally, the distribution extends to the islands of Great Britain and Ireland.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Larix kaempferi is characterized by its establishment within managed forest environments, where it is frequently utilized in silviculture due to its rapid growth and timber value. As a deciduous conifer, it thrives in temperate climates and is often integrated into plantation systems designed for sustainable wood production. In these managed settings, the species occupies specific successional niches, often serving as a pioneer or early-to-mid successional component that influences soil nutrient cycling and light availability for understory vegetation. Its presence in these anthropogenic landscapes is defined by human-driven management regimes, including thinning and controlled harvesting, which shape its spatial distribution and population density within the forest ecosystem.

Habitat :

managed, forest

Life history

The life history of Larix kaempferi is characterized by its classification as a perennial organism, allowing it to persist through multiple growing seasons and establish long-term presence within its ecosystem. As a phanerophyte, its regenerative buds are located high above the ground on woody branches, a structural adaptation that enables it to thrive in diverse environmental conditions. This phanerophyte life form, consistent across its developmental stages, facilitates its ability to withstand seasonal shifts while maintaining its stature. Through its perennial lifecycle, the plant undergoes continuous growth and maturation, relying on its elevated bud placement to ensure survival and successful regeneration throughout its extended lifespan.

Life form :

phanerophyte

Lifecycle :

perennial

Morphology

The morphology of Larix kaempferi is characterized by its stature as a large, woody tree that exhibits a self-supporting growth habit. It is a terrestrial species that grows independently, without behaving as a parasite or an epiphyte. As a robust tree, it typically reaches a mean height of 30 m, though it can attain a maximum height of up to 35 m. Its structure is defined by its woody composition and a growth form that is strictly tree-like, lacking any climbing or vine-like tendencies.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

tree

Parasite :

independent

Plant height max:

35 m

Plant height mean:

30 m

Woodiness :

woody

Physiology

The physiology of Larix kaempferi is characterized by a C3 photosynthetic pathway, which dictates its carbon fixation processes and metabolic efficiency in temperate environments. As a deciduous conifer, its metabolic activities are highly seasonal, involving a period of dormancy during winter months to manage water stress and freezing temperatures. Furthermore, the plant is non-carnivorous, relying entirely on its root system and symbiotic mycorrhizal associations for the uptake of essential nutrients such as nitrogen and phosphorus from the soil, rather than capturing prey to supplement its nutritional requirements.

Carnivory :

non-carnivorous

Photosynthetic pathway :

C3

Reproduction

The reproduction of Larix kaempferi is characterized by a strictly sexual process, as asexual reproduction is entirely absent. The flowering period typically commences in April and concludes in May, though the timing can be variable. As an abiotic pollination specialist, the species relies on a wind-driven pollination syndrome to facilitate fertilization. Following successful pollination, the plant produces seeds with a very small mass; the mean seed mass is approximately 0.0041554 g, with individual seeds ranging from a minimum of 0.00385 g to a maximum of 0.007 g. Once mature, the seeds are distributed via an anemochorous dispersal syndrome, utilizing the wind to carry them away from the parent plant.

Dispersal syndrome :

anemochorous

Flowering time :

Apr

Flowering time :

May

Pollination syndrome :

wind

Pollination syndrome :

abiotic

Reproduction asexual :

absent

Seed mass max:

0.007 g

Seed mass mean:

0.0041554 g

Seed mass min:

0.00385 g

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Larix kaempferi has 3 reported plant parts identified across 6 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include root, seed, leaf.

Root

1. Journal of cellular biochemistry
2. Journal of natural products
3. Planta medica

Seed

1. Journal of Asian natural products research
2. Journal of natural products

Leaf

1. Planta medica

Chemicals

Larix kaempferi has 22 reported phytochemicals identified across 6 scientific publications and several other databases. The most consistently reported chemicals include Pseudolaric acid B, PseudoLarix acid B, Pseudolaric acid A, Pseudolaric acid A-O-beta-D-glucopyranoside, Pseudolaric acid B-O-beta-D-glucopyranoside.

Pseudolaric acid B

1. Memorias do Instituto Oswaldo Cruz
2. Journal of cellular biochemistry
3. Journal of pharmaceutical and biomedical analysis
4. Planta medica

PseudoLarix acid B

1. Molecular pharmacology
2. European journal of pharmacology

Pseudolaric acid A

1. Memorias do Instituto Oswaldo Cruz
2. Journal of pharmaceutical and biomedical analysis

Pseudolaric acid A-O-beta-D-glucopyranoside

1. Journal of natural products
2. Journal of pharmaceutical and biomedical analysis

Pseudolaric acid B-O-beta-D-glucopyranoside

1. Journal of natural products
2. Journal of pharmaceutical and biomedical analysis

deacetylpseudolaric acid A

1. Journal of natural products
2. Journal of pharmaceutical and biomedical analysis

11S-deacetylpseudolaric acid A

1. Journal of natural products

1A

1. Planta medica

2A

1. Planta medica

Methyl pseudolarate A

1. Journal of natural products

Activities

Larix kaempferi has 4 reported activities identified across 6 scientific publications and several other databases. The most consistently reported activities include Cytotoxic, Anticancer, Antifungal, Antimicrobial.

Cytotoxic

1. Planta medica
2. Memorias do Instituto Oswaldo Cruz

Anticancer

1. Phytotherapy research : PTR

Antifungal

1. Memorias do Instituto Oswaldo Cruz

Antimicrobial

1. Planta medica

Preparations

Larix kaempferi has 10 reported preparations identified across 6 scientific publications and several other databases. The most consistently reported preparations include Extracts of the root and trunk barks, Methanol extract, bark, commercial crude drugs, ethyl acetate extract.

Extracts of the root and trunk barks

1. Planta medica

Methanol extract

1. Parasitology research

Bark

1. Journal of natural products

Commercial crude drugs

1. Journal of pharmaceutical and biomedical analysis

Ethyl acetate extract

1. Parasitology research

Leaves

1. Planta medica

Pseudolarix acids a and b

1. Journal of ethnopharmacology

Roots

1. Journal of cellular biochemistry

Seeds

1. Journal of Asian natural products research

Seeds of pseudolarix kaempferi

1. Journal of natural products