Rudbeckia hirta
Black-eyed susan
Rudbeckia hirta, commonly known as Black-eyed Susan, is a resilient perennial wildflower celebrated for its vibrant yellow petals and dark central cones. Beyond its ornamental beauty, this hardy plant holds historical significance in traditional herbalism, often utilized for its potential anti-inflammatory, antibacterial, and immune-boosting medicinal properties in various cultures.
- Scientific name: Rudbeckia hirta
- Family: Asteraceae
- Native range: Europe
Taxonomical Classification
This plant belongs to the kingdom Plantae and the phylum Streptophyta, falling under the class Equisetopsida and subclass Magnoliidae. Within the order Asterales, it is classified under the family Asteraceae and the genus Rudbeckia.
| Rank | Classification | Source |
|---|---|---|
| Kingdom | Plantae | WCVP |
| Phylum | Streptophyta | WCVP |
| Class | Equisetopsida | WCVP |
| Subclass | Magnoliidae | WCVP |
| Order | Asterales | WCVP |
| Family | Asteraceae | WCVP |
| Genus | Rudbeckia | WCVP |
Common Names
This plant, known scientifically as Rudbeckia hirta, is referred to by various common names depending on the linguistic and regional context. In Chinese, it is identified as 黑心金光菊 in Simplified Chinese (zh-hans), Traditional Chinese (zh-hant), and in the Hong Kong dialect (zh-hk). In Czech, it is known as třapatka srstnatá (cs), while in Spanish, it is referred to as Rudbeckia bicolor (es).| Language | Common Name | Source |
|---|---|---|
| zh-hans | 黑心金光菊 | Wikidata |
| zh-hant | 黑心金光菊 | Wikidata |
| zh-hk | 黑心金光菊 | Wikidata |
| cs | třapatka srstnatá | Wikidata |
| es | Rudbeckia bicolor | Wikidata |
| sv | Sommarrudbeckia | Wikidata |
| da | Håret Solhat | Wikidata |
| zh | 黑心金光菊 | Wikidata |
| de | Schwarzäugige Rudbeckie | Wikidata |
| cy | Blodyn-pigwrn blewog | Wikidata |
Distribution
This plant is widely distributed across various regions of the European continent. In Northern Europe, its presence is noted in Great Britain and Ireland. It can also be found extending further north into Norway and Sweden. Additionally, the species is located within Middle Europe, specifically in Austria. These locations demonstrate the plant's ability to thrive in diverse European climates.
| Region | Area | Source |
|---|---|---|
| Northern Europe | Great Britain | WCVP |
| Northern Europe | Ireland | WCVP |
| Northern Europe | Norway | WCVP |
| Northern Europe | Sweden | WCVP |
| Middle Europe | Austria | WCVP |
| Middle Europe | Belgium | WCVP |
| Middle Europe | Czechia-Slovakia | WCVP |
| Middle Europe | Germany | WCVP |
| Middle Europe | Hungary | WCVP |
| Middle Europe | Netherlands | WCVP |
Plant Parts
This plant, commonly known as Black-eyed Susan, is often valued for its vibrant and distinctive flowers. The flowers are the most striking feature of Rudbeckia hirta, characterized by bright yellow ray florets that surround a prominent, dark central cone composed of tiny disc florets. In traditional herbal practices, various components of the plant have been studied, but the flowers are frequently highlighted for their visual appeal and their role in the plant's overall reproductive cycle.- Total parts
- 2
- Scientific sources
- 2
| Plant Part | Sources | Confidence |
|---|---|---|
| flowers | 1 | ★☆☆☆☆ |
| Flowers | 1 | ★☆☆☆☆ |
Chemicals
Rudbeckia hirta has 2 reported phytochemicals identified across 2 scientific publications and several other databases. The most consistently reported chemicals include fatty acids, flavonoids.
- Total chemicals
- 2
- Scientific sources
- 2
Most Reported Compounds
| Compound | Sources | Confidence |
|---|---|---|
| fatty acids | 1 | ★☆☆☆☆ |
| flavonoids | 1 | ★☆☆☆☆ |
Activities
Rudbeckia hirta has 4 reported activities identified across 5 scientific publications and several other databases. The most consistently reported activities include Antioxidant, Antibacterial, Antifungal, Antimicrobial.
- Total activities
- 4
- Scientific sources
- 5
Most Reported Activities
| Activity | Sources | Confidence |
|---|---|---|
| Antioxidant | 2 | ★☆☆☆☆ |
| Antibacterial | 1 | ★☆☆☆☆ |
| Antifungal | 1 | ★☆☆☆☆ |
| Antimicrobial | 1 | ★☆☆☆☆ |
Medicinal Uses
Rudbeckia hirta has 1 reported medicinal uses identified across 1 scientific publications and several other databases. The most consistently reported uses include Gram-positive bacteria.
- Total uses
- 1
- Scientific sources
- 1
Most Reported Uses
| Use | Sources | Confidence |
|---|---|---|
| Gram-positive bacteria | 1 | ★☆☆☆☆ |