Hypericum attenuatum

Names and Synonyms

Scientific Names

Accepted name

Synonyms

• Hypericum perforatum var. confertiflorum

Sources: Wikidata

Taxonomical Classification

This plant belongs to the kingdom Plantae and is classified under the phylum Streptophyta within the class Equisetopsida. Following its lineage through the subclass Magnoliidae and order Malpighiales, it is a member of the family Hypericaceae. Finally, it is identified by its specific genus, Hypericum.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant is primarily found across several distinct regions within the vast territory of Siberia. Its geographical presence includes the specific areas of Buryatiya and Chitа. Furthermore, it can be located within the Irkutsk region of the same vast territory. The distribution also extends to the Krasnoyarsk area, showing its wide range. Finally, the plant is known to inhabit the remote reaches of Yakutiya.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Hypericum attenuatum is characterized by its specific preference for diverse terrestrial environments, including fields, steppes, and steppe slopes, as well as dry glades and wood borders. This species is also frequently found occupying dry stony slopes, areas with shore pebbles, and locations in close proximity to crops. Geographically, its distribution is highly specialized within a narrow altitudinal band, maintaining a consistent elevational range with a minimum, mean, and maximum value of 1100 m AMSL.

Elevational range max:

1100 m AMSL

Habitat :

fields, steppes, steppe slopes, dry glades, wood borders, dry stony slopes, shore pebbles, and near crops

Life history

The life history of Hypericum attenuatum is characterized by its status as a perennial species, allowing it to persist in its environment through multiple growing seasons. As a perennial, the plant establishes a robust root system that supports long-term survival, enabling it to regrow and bloom annually rather than completing its cycle in a single season like annuals or biennials. This perennial nature allows the plant to occupy stable niches within its habitat, where it can invest energy into structural longevity and repeated reproductive efforts over several years.

Lifecycle :

perennial

Morphology

The morphology of Hypericum attenuatum is characterized by its growth form as a non-woody herb, specifically classified as a herbaceous plant. It functions as an independent organism, maintaining a self-supporting structure rather than acting as a climber or a parasite. In terms of stature, the plant exhibits a relatively low profile, with a height ranging from a minimum of 0.1 m to a maximum of 0.74 m, maintaining an average plant height of approximately 0.52 m. Furthermore, this species is strictly terrestrial in its habitat preference, lacking aquatic or semiaquatic tendencies.

Aquatic :

terrestrial

Climber :

self-supporting

Growth form :

herb

Parasite :

independent

Plant height max:

0.74 m

Plant height mean:

0.52 m

Plant height min:

0.1 m

Woodiness :

non-woody

Physiology

The physiology of Hypericum attenuatum is characterized by specific morphological adaptations in its foliar structures, which play a critical role in its photosynthetic efficiency and resource management. The leaves exhibit a distinct range of dimensions, with a mean leaf length of 2 cm, though individual specimens vary from a minimum of 1.5 cm to a maximum of 2.5 cm. This longitudinal variation is complemented by a specific width profile, where the leaves maintain a minimum width of 0.5 cm and reach a maximum width of 1.2 cm. These precise leaf dimensions influence the plant's surface-area-to-volume ratio, impacting gas exchange, transpiration rates, and the overall capacity for light interception within its ecological niche.

Leaf length max:

2.5 cm

Leaf length mean:

2 cm

Leaf length min:

1.5 cm

Leaf width max:

1.2 cm

Leaf width min:

0.5 cm

Reproduction

The reproduction of Hypericum attenuatum is characterized by its bisexual reproductive nature, ensuring that individual flowers possess both male and female functional organs. The flowering period typically commences in June and extends through September, although the timing can be variable. The floral morphology features flowers that generally range in length from a minimum of 1.3 cm to a maximum of 1.5 cm. Following successful pollination, the plant produces fruit with distinct dimensions; the fruit length is highly variable, ranging from a minimum of 0.06 cm to a maximum of 1 cm, with an average length of approximately 0.53 cm. The fruit width remains remarkably consistent, maintaining a minimum and mean width of 0.4 cm, which also serves as its maximum width.

Flower length max:

1.5 cm

Flower length min:

1.3 cm

Flowering time :

Jun

Flowering time :

Sep

Fruit length max:

1 cm

Fruit length mean:

0.53 cm

Fruit length min:

0.06 cm

Fruit width max:

0.4 cm

Reproduction sexual :

bisexual

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Hypericum attenuatum has 15 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include Attenuatumione C, BETA-SITOSTEROL, FRANGULIN, HEXANOL, Hyperoside.

Attenuatumione C

1. Fitoterapia

BETA-SITOSTEROL

1. Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica

FRANGULIN

1. Ukrains'kyi biokhimichnyi zhurnal (1999 )

HEXANOL

1. Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica

Hyperoside

1. Ukrains'kyi biokhimichnyi zhurnal (1999 )

Isoquercitrin

1. Ukrains'kyi biokhimichnyi zhurnal (1999 )

PETIOLIN A

1. Journal of ethnopharmacology

Protohypericin

1. Ukrains'kyi biokhimichnyi zhurnal (1999 )

Protopseudohypericin

1. Ukrains'kyi biokhimichnyi zhurnal (1999 )

RUTIN

1. Ukrains'kyi biokhimichnyi zhurnal (1999 )

Activities

Hypericum attenuatum has 1 reported activities identified across 0 scientific publications and several other databases. The most consistently reported activities include Anticancer.

Anticancer

1. Journal of ethnopharmacology

Medicinal Uses

Hypericum attenuatum has 2 reported medicinal uses identified across 0 scientific publications and several other databases. The most consistently reported uses include cancer, cardiac disorders.

Most Reported Uses

Preparations