Helianthus angustifolius
Helianthus angustifolius · Accepted scientific name
Scientific literature: Very Sparse (0 studies) · ★☆☆☆☆
Helianthus angustifolius, commonly known as the narrow-leafed sunflower, is a striking perennial herb native to various regions of North America. This plant is most recognized for its vibrant, golden-yellow flowers that command attention in any landscape. Each bloom features a classic composite structure, consisting of bright ray florets surrounding a central disc of fertile florets. These cheerful blossoms serve as a vital nectar source for pollinators like bees and butterflies during the late summer months. Because of their stunning floral display and hardy nature, they are an excellent choice for sun-loving gardens.
- Synonyms
- Coreopsis Angustifolia · Helianthus Angustifolius F. Bicolor · 4 more
- Common names
- Not available
- Family
- Asteraceae
- Distribution
- Africa
- Plant Parts
- Flower
Classification
Common Names
Helianthus angustifolius is a resilient plant that is recognized by several different nicknames depending on the region. It is most frequently referred to by its common name, the Swamp sunflower, due to its preferred habitat. Some enthusiasts also call it the narrow-leaf sunflower to highlight its distinct foliage. Occasionally, you may even encounter the phonetic spelling known as the sumpsolros in local records. Regardless of the name used, this species remains a distinctive member of its genus.
Sources: Catalogue of Life (COL)
Synonyms
Helianthus angustifolius is a botanical subject characterized by a complex network of taxonomic synonyms. This species has been historically identified under various names, including Coreopsis angustifolia and Discomela angustifolia. Its classification further extends to specific forms, such as Helianthus angustifolius f. bicolor. Researchers also recognize distinct varieties within this group, namely Helianthus angustifolius var. nemorosus and Helianthus angustifolius var. planifolius. Understanding these diverse nomenclatural relationships is essential for accurate botanical identification.
Sources: The World Checklist of Vascular Plants (WCVP)
Taxonomy
Helianthus angustifolius belongs to the diverse kingdom Plantae, showcasing the vast complexity of the natural world. Within this kingdom, the species is classified under the class Equisetopsida, marking its place among the flowering plants. It further resides in the order Asterales, a group known for its distinct structural characteristics. As a member of the Asteraceae family, it shares a close botanical connection with many well-known composite flowers. Ultimately, this plant is defined by its membership in the genus Helianthus, anchoring its identity within this celebrated lineage.
| Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Helianthus |
Sources: The World Checklist of Vascular Plants (WCVP)
Distribution
Geographic Regions
Helianthus angustifolius exhibits a remarkably wide geographical distribution that spans across vastly different continents. In the tropical regions of Asia, this species can be found throughout Malesia and Jawa. Moving to North America, its presence is well-established across the North-Central United States, specifically within Iowa, Missouri, and Oklahoma. The plant also extends its reach into the Northeastern United States, with documented sightings in Indiana. This diverse range highlights the plant's ability to adapt to both tropical and temperate environments.
Sources: The World Checklist of Vascular Plants (WCVP)
Identification
Morphology
Helianthus angustifolius is a self-supporting herb that grows with a sturdy structure. This plant reaches a maximum height of approximately 1.7 meters in the wild. Its upright growth form allows it to thrive effectively within its natural habitat.
Sources: Global Inventory of Floras and Traits (GIFT)
Biological Activities
Compounds
Conditions
Helianthus angustifolius exhibits significant cytotoxic activity against several specific human cell lines in vitro. The plant extract effectively treats CCRF-CEM leukemia and HCT 116 colon cancer cells. Additionally, it demonstrates therapeutic potential against MDA-MB-231 breast cancer and U251 glioblastoma. Research also indicates its interaction with the human lung fibroblast cell line MRC-5. These diverse relationships highlight the plant's broad impact on various cancerous and fibroblast cell types.
Preparations
Parts used
Helianthus angustifolius contains specialized floral components that serve as a rich source of bioactive compounds. Recent research has focused on extracting dichloromethane from these flowers to investigate their potential medicinal properties. Through cytotoxicity-guided fractionation, scientists isolated several heliangolide-type sesquiterpene lactones from the plant material. One specific compound, 8-methacrylyl-4,15-iso-atriplicolide, demonstrated significant potency against various human cancer cell lines. These findings highlight the importance of the flower as a vital part of the plant for pharmacological discovery.