Himalayan St Johns Wort

Names and Synonyms

Scientific Names

Accepted name

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and is classified under the phylum Streptophyta and class Equisetopsida. Within the subclass Magnoliidae, it is organized under the order Malpighiales and the family Hypericaceae. Finally, it is identified by its genus, Hypericum.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a wide geographical range across several key regions in Asia. In China, its presence is noted in the South-Central, Southeast, and Tibet regions. Its distribution extends into the Indian Subcontinent, specifically within the state of Assam. Furthermore, it can be found inhabiting the East Himalaya area. These diverse locations highlight the varied habitats where the species thrives.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Hypericum elodeoides is characterized by its ability to thrive across a broad altitudinal gradient, demonstrating significant adaptability to varying montane and subalpine environments. This species is typically found within an elevational range that begins at a minimum of 750 m AMSL and extends to a maximum of 3300 m AMSL. Throughout its natural distribution, the plant maintains a mean elevation of approximately 1975 m AMSL, suggesting a preference for mid-to-high altitude ecosystems where specific moisture and temperature regimes are present. This wide vertical distribution allows it to occupy diverse ecological niches, ranging from lower montane slopes to high-elevation alpine zones.

Elevational range max:

3300 m AMSL

Elevational range mean:

1975 m AMSL

Elevational range min:

750 m AMSL

Life history

The life history of Hypericum elodeoides is characterized by its classification as a perennial species, allowing it to persist through multiple growing seasons. As a perennial, the plant establishes a stable presence in its habitat, often utilizing underground structures to survive periods of dormancy before re-emerging to complete its reproductive cycles. Its development follows a seasonal rhythm where it focuses on vegetative growth and resource accumulation during favorable conditions, eventually transitioning to a reproductive phase marked by the flowering and seed production necessary for the continuation of the species. This enduring lifecycle enables the plant to maintain populations in specific ecological niches over long durations.

Lifecycle :

perennial

Morphology

The morphology of Hypericum elodeoides is characterized by a non-woody, herbaceous growth form, functioning as a self-supporting plant that does not exhibit climbing behavior. As a terrestrial species, it grows independently without any parasitic tendencies. The plant typically reaches a mean height of 0.3 m, though its stature can vary between a minimum of 0.2 m and a maximum of 0.4 m.

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

shrub

Growth form :

herb

Parasite :

independent

Plant height max:

0.4 m

Plant height mean:

0.3 m

Plant height min:

0.2 m

Woodiness :

non-woody

Physiology

The physiology of Hypericum elodeoides is characterized by distinct morphological dimensions in its foliage, which serve as key indicators of its vegetative development and metabolic capacity. The leaf structure exhibits significant variability in size, with leaf lengths ranging from a minimum of 2 cm to a maximum of 5.5 cm, maintaining a mean length of approximately 3.75 cm. This longitudinal variation is complemented by a specific width profile, where leaf widths fluctuate between a minimum of 0.5 cm and a maximum of 1 cm. These precise measurements in leaf length and width define the surface area available for photosynthetic activity, directly influencing the plant's energy acquisition and overall physiological vigor.

Leaf length max:

5.5 cm

Leaf length mean:

3.75 cm

Leaf length min:

2 cm

Leaf width max:

1 cm

Leaf width min:

0.5 cm

Reproduction

The reproduction of Hypericum elodeoides is characterized by its specific inflorescence structure and the development of small, uniform fruit. The inflorescence is relatively compact, with lengths ranging from a minimum of 0.003 m to a maximum of 0.006 m. Following successful pollination, the plant produces fruits that exhibit highly consistent morphological dimensions. The fruit length is remarkably stable, maintaining a minimum, mean, and maximum value of 0.5 cm. Similarly, the fruit width shows no variation in the recorded data, with a minimum, mean, and maximum value all measured at 0.4 cm. These precise measurements of the reproductive organs ensure the consistent dispersal of seeds characteristic of the species.

Fruit length max:

0.5 cm

Fruit width max:

0.4 cm

Inflorescence length max:

0.006 m

Inflorescence length min:

0.003 m

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Hypericum elodeoides has 1 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include Hypelodin B.

Hypelodin B

1. Journal of natural medicines