Swertia tenuis

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 the class Equisetopsida. Within the subclass Magnoliidae, it is ordered under Gentianales and falls into the family Gentianaecae. Finally, its taxonomic identity is defined by the genus Swertia.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a specific geographical distribution concentrated within certain regions of Asia. In China, it is notably found throughout the South-Central areas. Furthermore, its presence extends into the high-altitude regions of Tibet. These locations define the primary natural habitats where the species can be sourced. Consequently, the plant's range is limited to these specific mountainous and subtropical territories.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Swertia tenuis is defined by its occurrence within specific altitudinal gradients of montane ecosystems, where it thrives across a broad vertical distribution. This species is typically found inhabiting high-altitude regions, with its presence spanning an elevational range that begins at a minimum of 1200 m AMSL. As the terrain ascends, the plant occupies a significant ecological niche, reaching a mean elevation of approximately 2350 m AMSL. The upper limits of its viable habitat extend to much higher elevations, reaching a maximum threshold of 3500 m AMSL, which places it within subalpine or alpine zones depending on the specific mountain range.

Elevational range max:

3500 m AMSL

Elevational range mean:

2350 m AMSL

Elevational range min:

1200 m AMSL

Life history

The life history of Swertia tenuis is characterized by a lifecycle that is primarily perennial, though it can exhibit variable growth patterns depending on environmental conditions and habitat stability. As a perennial herb, the plant typically undergoes a cycle of vegetative growth and seasonal dormancy, allowing it to establish a robust root system that can persist through unfavorable periods. The developmental process involves the emergence of small, opposite leaves and the gradual maturation of its structural components until it reaches a reproductive stage, marked by the production of small, inconspicuous flowers. Following successful pollination, the plant transitions into a seed-dispersal phase, ensuring the continuity of the species across its natural alpine or sub-alpine habitats. This perennial nature enables the plant to occupy specific ecological niches where it can survive multiple growing seasons, contributing to its long-term presence in its native ecosystem.

Lifecycle :

annual

Morphology

The morphology of Swertia tenuis is characterized by its growth form as a non-woody herb. This plant is a self-supporting species that does not exhibit climbing tendencies. In terms of stature, it is a relatively small herb with a plant height that typically ranges from a minimum of 0.08 m to a maximum of 0.3 m, maintaining an average height of approximately 0.19 m.

Climber :

self-supporting

Growth form :

herb

Plant height max:

0.3 m

Plant height mean:

0.19 m

Plant height min:

0.08 m

Woodiness :

non-woody

Physiology

The physiological characteristics of the leaves in Swertia tenuis are defined by a highly narrow and linear morphology, optimized for its specific environmental niche. The leaf dimensions exhibit significant variability, with a minimum length of 0.9 cm and a maximum length reaching up to 1.5 cm, resulting in a mean leaf length of approximately 1.2 cm. Complementing this elongated structure, the leaf width remains exceptionally slender, ranging from a minimum of 0.15 cm to a maximum of 0.25 cm. This high aspect ratio between length and width suggests a physiological adaptation to manage transpiration and light interception within its natural habitat.

Leaf length max:

1.5 cm

Leaf length mean:

1.2 cm

Leaf length min:

0.9 cm

Leaf width max:

0.25 cm

Leaf width min:

0.15 cm

Reproduction

The reproduction of Swertia tenuis is primarily driven by its flowering process, which facilitates sexual reproduction through the development of small, distinct blossoms. These flowers are characterized by their diminutive size, with a flower length that typically ranges between a minimum of 0.3 cm and a maximum of 0.5 cm. This specific size range is a key morphological trait during its reproductive phase, as the plant transitions from vegetative growth to the production of these floral structures to ensure genetic diversity through pollination. Once these small flowers are successfully pollinated, they lead to the development of seeds, completing the plant's reproductive cycle.

Flower length max:

0.5 cm

Flower length min:

0.3 cm

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Swertia tenuis has 3 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include Gentiopicroside, Sweroside, Swertiamarin.

Gentiopicroside

1. Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials

Sweroside

1. Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials

Swertiamarin

1. Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials