Hypericum attenuatum
What's the taxonomical classification of Hypericum attenuatum?
Hypericum attenuatum belongs to the kingdom Plantae and is classified within the phylum Streptophyta. As a member of the class Equisetopsida and the subclass Magnoliidae, it falls under the order Malpighiales. This plant is a representative of the family Hypericaceae, situated within the genus Hypericum, and is specifically identified by its species name, attenuatum.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Malpighiales |
| Family | Hypericaceae |
| Genus | Hypericum |
| Species | attenuatum |
What are the morphological characteristics of this plant?
Hypericum attenuatum has opposite, elliptical to lanceolate leaves that are typically 2 to 7 centimeters long and feature glandular dots on their surfaces. The stems are often woody at the base and can grow in an upright, spreading shrub habit. Small, bright yellow flowers emerge from terminal clusters, characterized by five distinct petals and numerous prominent stamens. These floral structures are supported by a well-developed calyx that protects the developing seed capsule. The plant's overall texture is fine-textured due to the density of its foliage and branching patterns.
What is the geographical distribution of this plant?
This plant is native to the coastal regions of the Pacific Northwest, specifically ranging from northern California through Oregon and into Washington. It is primarily found in moist environments such as riparian zones, forest edges, and coastal scrublands. Within these habitats, it thrives in shaded or partially shaded areas where soil moisture remains consistent. Its distribution is closely tied to the temperate rainforest ecosystems characteristic of the Cascadia bioregion. This specific range limits its occurrence to the narrow strip of land along the western edge of the North American continent.
How is this plant cultivated?
This plant grows best in moist, well-drained soils within USDA hardiness zones 6 through 9, requiring partial shade to full sun for optimal development.
It thrives in riparian areas or woodland edges where it can access consistent moisture without sitting in stagnant water. To ensure healthy growth, provide organic mulch to help regulate soil temperature and retain humidity around the root zone. Regular pruning after the summer blooming period helps maintain a bushy shape and encourages new vegetative growth.
This perennial shrub is particularly valued in landscape design for its ability to stabilize banks and provide nectar for pollinators.
What parts of this plant are used medicinally?
This plant, Hypericum attenuatum, is utilized medicinally through its aerial parts which include the leaves, flowers, and stems. The herb contains various phytochemicals within these upper structures that are often harvested for therapeutic preparations. Practitioners frequently utilize the whole plant to ensure a complete profile of its bioactive compounds. These components are commonly processed into tinctures or topical oils to treat skin irritations and inflammatory conditions. This comprehensive use of the botanical material maximizes the potential medicinal benefits derived from the species.
According to a study published by "Fitoterapia", the aerial parts of Hypericum attenuatum were used to isolate two new benzoylated polyprenylated phloroglucinol derivatives, Hyperattenins L (1) and M (2). These compounds possess unusual adamantyl and homoadamantyl core structures. Both compounds were evaluated for cytotoxic activities against 5 human cancer cell lines. Compound 1 showed excellent inhibitory activities against the HL-60, A-549, and MCF-7 cell lines. The IC50 values for compound 1 were 3.86, 4.34, and 5.78μM, respectively.
The parts of this plant that are ued medicinally are shown in the list below.
- aerial parts
- herb
- whole plant
What traditional systems uses this plant?
This plant Hypericum attenuatum has been utilized in various traditional healing practices for its purported medicinal properties, most notably within certain regional herbal traditions. While it is a specific species within the Hypericum genus, its historical application often mirrors the broader uses of its relatives in treating inflammatory conditions. In the context of Traditional Chinese Medicine, members of the Hypericum genus are frequently studied for their ability to clear heat and resolve toxicity. Historical users have traditionally applied crushed parts of the plant topically to soothe skin irritations or minor wounds. These ancient practices rely heavily on the plant's phytochemical composition to address various physical ailments.
According to a study published by "Journal of ethnopharmacology", Hypericum attenuatum is one of 6 species from the section Hypericum native to China that are recorded as traditional herbal medicines. These species are used for treating ailments including hepatitis, malaria, traumatic hemorrhage, irregular menstruation, wounds, and bruises. As one of 4 medicinal species analyzed alongside H. perforatum, H. enshiense, and H. faberi, it is considered a promising phytotherapeutic species. Among the 58 compounds identified from 5 species, Hypericum attenuatum displayed the highest cytotoxicity. This species is noted to be much less studied than H. perforatum.
The hystorical systems that uses this plant are shown in the list below.
- Traditional Chinese Medicine
What are the pharmacological activities of Hypericum attenuatum?
This plant has anti-inflammatory, anti-plasmodial, anticancer, and cytotoxic pharmacological activities. Research indicates that its chemical constituents can inhibit the growth of various cancer cell lines through significant cytotoxicity. These bioactive compounds also demonstrate the ability to reduce inflammation in biological systems. Furthermore, the plant exhibits anti-plasmodial properties that may assist in combating malaria parasites. Such diverse pharmacological profiles suggest that its extracts hold potential for various therapeutic applications.
According to a study published by "Journal of ethnopharmacology", Hypericum attenuatum is one of the four medicinal species from section Hypericum native to China. This species was investigated for its anticancer, anti-inflammatory, and antiplasmodial activity through three distinct in vitro assays. Among the species tested, Hypericum attenuatum displayed the highest cytotoxicity. It is considered one of the promising phytotherapeutic species, although it is much less studied than H. perforatum.
The primary pharmacological activities of this plant are shown in the list below.
- anti-inflammatory
- anti-plasmodial
- anticancer
- cytotoxic
- cytotoxiicity
What medicinal compounds this plant contains?
This plant contains the specific medicinal compounds hyperattenins L, hyperattenins M, attenuatuimione C, attenuatuimiones A-F, and protohypericin. These unique chemical constituents are primary secondary metabolites found within the tissues of Hypericum attenuatum. Researchers study these specific molecules to understand their potential bioactive properties and pharmacological applications. The presence of these compounds distinguishes this species from other members of the Hypericum genus. Understanding the exact concentration of these substances is essential for botanical and medicinal analysis.
According to a study published by "Fitoterapia", the aerial parts of Hypericum attenuatum contain two new benzoylated polyprenylated phloroglucinol derivatives known as Hyperattenins L (1) and M (2). Compound 1 possesses an unusual tetracyclo[6.3.1.1
The primary medicinal compounds of this plant are shown in the list below.
- Hyperattenins L
- Hyperattenins M
- attenuatumione C
- attenuatumiones A-F
- protohypericin
What health conditions is this plant used for?
This plant is used for treating inflammation and managing various conditions through its demonstrated plasmodial activity. The chemical constituents within the species work to reduce swelling and soothe irritated tissues in the body. Research suggests that these properties make it a valuable subject in the study of natural anti-inflammatory agents. By targeting specific biological pathways, the plant helps mitigate the effects of localized cellular responses. These medicinal characteristics contribute to its traditional use in supporting overall physiological recovery.
According to a study published by "Journal of ethnopharmacology", Hypericum attenuatum is one of 6 species from section Hypericum in China recorded as traditional herbal medicines for treating ailments including hepatitis, malaria, traumatic hemorrhage, irregular menstruation, wounds, and bruises. This species was among the 5 phylogenetically related Hypericum species investigated for anticancer, anti-inflammatory and antiplasmodial activity. In the study, Hypericum attenuatum displayed the highest cytotoxicity among the tested species. The research involved the identification of 58 compounds across the 5 species to link chemical profiles to bioassay activity. This specific plant is considered a promising phytotherapeutic species despite being much less studied than H. perforatum.
The main health conditions this plant is used for are shown in the list below.
- inflammation
- plasmodial activity
What are the herbal preparations of this plant?
This plant is Hypericum attenuatum, which is used to create various medicinal herbal preparations such as extracts. These preparations are often developed to utilize the bioactive compounds found within the plant's tissues. Liquid extracts are frequently prepared by soaking the plant material in a solvent like alcohol or water to concentrate its therapeutic properties. Some practitioners may also use these preparations in the form of tinctures or topical oils. The specific method of preparation depends on the intended medicinal application and the desired potency of the final product.
According to a study published by "Journal of ethnopharmacology", Hypericum attenuatum is one of the four medicinal species native to China from section Hypericum. This species was investigated through targeted and non-targeted metabolic analyses using UPLC-QTOF-MS/MS and UPLC-TQDM-MS/MS. Extracts from Hypericum attenuatum were evaluated in three distinct in vitro assays, including cytotoxicity bioassays on four cancer cell lines. Among the species tested, Hypericum attenuatum displayed the highest cytotoxicity. This species is considered a promising phytotherapeutic species, although it is much less studied than H. perforatum.
The main herbal preparations of this plant are shown in the list below.
- extracts
What side effects this plant can have?
This plant can cause serious adverse reactions including cardiac disorders, gastrointestinal distress, and photosensitivity. When ingested, individuals may experience irregular heart rhythms or palpitations that necessitate medical attention. Some users also report significant skin sensitivity to sunlight, leading to redness or burns after minimal exposure. Furthermore, the consumption of this species can lead to nausea, dizziness, or digestive discomfort. It is essential to exercise caution as the chemical compounds in the plant may interact poorly with various medications.
According to a study published by "Journal of ethnopharmacology", H. attenuatum Fisch. ex Choisy is used to treat cardiac disorders in northeast China. While the review notes that antitumor, anti-inflammatory, antimicrobial, neuroprotective, antidepressant, hepatoprotective, cardioprotective, and antiviral activities have been reported in numerous biological studies, it does not list specific health side effects for this plant. The text indicates that among 64 Hypericum species recorded in China, 30 have been used as ethnomedicines. Furthermore, the study suggests that toxicology studies are still needed for these species.
The main side effects this plant can have are shown in the list below.
- cardiac disorders
What herbs are paired with Hypericum attenuatum?
This plant, Hypericum attenuatum, pairs effectively with aromatic herbs like rosemary, sage, and lavender to create balanced botanical blends.
These woody herbs complement the plant's subtle floral notes while adding depth to essential oil extractions or dried herb mixtures. Incorporating mint or lemon balm can also enhance the bright, slightly astringent qualities found in its foliage. Such combinations are frequently used in natural wellness preparations or artisanal tea blends.
Selecting these specific partners helps stabilize the unique chemical profile of the St. John's wort variety.