Euphorbia jolkinii

Names and Synonyms

Scientific Names

Accepted name

Synonyms

• Galarhoeus nematocypha
• Galarhoeus formosanus
• Tithymalus jolkinii
• Galarhoeus formosana var. hayatae
• Galarhoeus jolkinii f. insularis
• Tithymalus formosanus
• Tithymalus calonesiacus
• Galarhoeus jolkinii
• Euphorbia jolkinii f. insularis
• Tithymalus shouanensis
• Dichrophyllum jolkinii
• Euphorbia formosana
• Galarhoeus calonesiacus
• Euphorbia regina
• Galarhoeus shouanensis
• Euphorbia nematocypha
• Galarhoeus formosanus var. hayatae
• Euphorbia nematocypha var. induta
• Euphorbia shouanensis
• Euphorbia calonesiaca

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and the phylum Streptophyta, falling under the class Equisetopsida and subclass Magnoliidae. Within the order Malpighiales, it is classified under the family Euphorbiaceae. Finally, its taxonomic identity is defined by the genus Euphorbia, specifically as the species Euphorbia jolkinii.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a broad geographical distribution across several key regions of East Asia. In China, its presence is specifically noted within the South-Central territories. Moving across the sea, the species is well-established in Japan, including the Nansei-shoto islands. It can also be found growing throughout the Korean Peninsula. Finally, the range extends further south to include the island of Taiwan.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Euphorbia jolkinii is characterized by a broad altitudinal distribution that allows it to inhabit diverse mountain landscapes. It thrives across a significant vertical gradient, with its presence recorded from low-lying areas at a minimum elevation of 200 m AMSL up to high-altitude environments reaching a maximum of 3300 m AMSL. This wide ecological amplitude results in a mean elevation of approximately 1750 m AMSL, indicating that the species is most commonly found within mid-elevation montane zones. This ability to span such a vast range suggests an adaptability to varying temperature regimes and atmospheric pressures associated with different topographic levels.

Elevational range max:

3300 m AMSL

Elevational range mean:

1750 m AMSL

Elevational range min:

200 m AMSL

Life history

The life history of Euphorbia jolkinii is characterized by its status as a perennial plant, allowing it to persist in its environment over multiple growing seasons. In terms of its structural growth strategy and survival mechanism, it is classified as a hemicryptophyte, meaning its perennial buds are located at or just below the soil surface, protected by leaf litter or substrate. This life form, consistent across its biological classification as a hemicryptophyte, enables the species to endure seasonal fluctuations while maintaining a stable presence within its ecological niche.

Life form :

hemicryptophyte

Lifecycle :

perennial

Morphology

The morphology of Euphorbia jolkinii is characterized by its growth form as a herb, exhibiting a non-woody structure throughout its vegetative parts. This plant functions as a self-supporting climber, possessing the ability to ascend through its own structural integrity without requiring external hosts for support. It is an independent organism that does not exhibit parasitic behavior, maintaining its own nutritional processes. Furthermore, it is a terrestrial species, establishing its root system and growth within the soil rather than living as an epiphyte.

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Parasite :

independent

Woodiness :

non-woody

Physiology

The physiological architecture of the foliage in Euphorbia jolkinii is characterized by highly specialized leaf dimensions that facilitate its specific metabolic processes. The leaves exhibit a notable range in longitudinal development, with a mean leaf length of 2.5 cm, though they can reach a maximum length of 4 cm or decrease to a minimum of 1 cm. This variability in length is complemented by a narrow lateral profile, where the leaf width maintains a mean of 0.5 cm, fluctuating between a minimum of 0.3 cm and a maximum of 0.7 cm. These morphological parameters suggest a physiological adaptation toward a slender, linear structure, likely optimizing light interception and gas exchange within its specific ecological niche.

Leaf length max:

4 cm

Leaf length mean:

2.5 cm

Leaf length min:

1 cm

Leaf width max:

0.7 cm

Leaf width mean:

0.5 cm

Leaf width min:

0.3 cm

Reproduction

The reproduction of Euphorbia jolkinii is characterized by the development of specialized fruit structures that exhibit highly consistent morphological dimensions. The resulting fruits are uniform in their physical properties, maintaining a consistent shape where the length and width measurements are identical across all recorded parameters. Specifically, the fruit length remains constant with a minimum, mean, and maximum value of 0.55 cm. Similarly, the fruit width shows no variance, with its minimum, mean, and maximum values all precisely measured at 0.55 cm. This lack of dimensional deviation indicates a highly stabilized reproductive output regarding the size of the fruit, ensuring that each unit produced maintains a perfectly spherical or consistent geometric profile of 0.55 cm by 0.55 cm.

Fruit length max:

0.55 cm

Fruit width max:

0.55 cm

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Euphorbia jolkinii has 1 reported plant parts identified across 1 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include root.

Root

1. Molecules (Basel, Switzerland)

Chemicals

Euphorbia jolkinii has 4 reported phytochemicals identified across 1 scientific publications and several other databases. The most consistently reported chemicals include 3,3'-Di-O-methylellagic acid, Brevifolin, Hyperin, ellagic acid.

3,3'-Di-O-methylellagic acid

1. Chemical & pharmaceutical bulletin

Brevifolin

1. Chemical & pharmaceutical bulletin

Hyperin

1. Chemical & pharmaceutical bulletin

ellagic acid

1. Chemical & pharmaceutical bulletin

Preparations

Euphorbia jolkinii has 4 reported preparations identified across 1 scientific publications and several other databases. The most consistently reported preparations include Crude extract, crude extract, extract, hot-water extract.

Crude extract

1. Environmental toxicology

Crude extract

1. Environmental toxicology

Extract

1. Chemical & pharmaceutical bulletin

Hot-water extract

1. Molecules (Basel, Switzerland)