Alcea rosea
What's the taxonomical classification of Alcea rosea?
Alcea rosea belongs to the kingdom Plantae and is classified under the phylum Streptophyta. Within the class Equisetopsida, it is further categorized into the subclass Magnoliidae and the order Malvales. This plant is a member of the family Malvaceae, which contains its specific genus, Alcea, and its distinct species, rosea.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Malvales |
| Family | Malvaceae |
| Genus | Alcea |
| Species | rosea |
What are the morphological characteristics of this plant?
Alcea rosea has upright, herbaceous stems that typically reach heights of six to eight feet and are covered in soft, pubescent hairs. The leaves are large, cordate to reniform in shape, and feature palmate venation with lobed or coarsely toothed margins. Its terminal inflorescences consist of large, showy flowers characterized by five broad, overlapping petals that range in color from pale pink to deep rose. The reproductive structures include a central cluster of numerous stamens and a prominent pistil surrounded by a nectariferous disk. As the plant matures, the flowers transition into rounded, bristly capsules containing many small, dark seeds.
What is the geographical distribution of this plant?
This plant is native to the western coast of North America, ranging from the Aleutian Islands in Alaska down through British Columbia to California. It typically inhabits coastal environments such as dunes, sandy beaches, and maritime scrublands. Within these regions, the species favors salt-tolerant habitats that provide well-draining sandy soils. Its distribution is closely tied to the moist, temperate climates found along the Pacific shoreline. This specific ecological niche ensures its presence in areas frequently influenced by ocean spray and coastal winds.
How is this plant cultivated?
This plant, commonly known as Hollyhock, thrives in full sun and requires well-draining soil with a neutral to slightly alkaline pH level.
To ensure vigorous growth, you should sow seeds directly into the garden in early spring or late autumn to allow for natural stratification. Providing consistent moisture during the establishment phase is critical, though the mature plants are relatively drought-tolerant once their deep root systems are developed. Spacing individual plants at least eighteen inches apart prevents fungal diseases by maintaining adequate airflow around the foliage.
Regular mulching helps retain soil moisture and suppresses competing weeds throughout the growing season.
What parts of this plant are used medicinally?
This plant, Alcea rosea, is utilized medicinally through its flowers, leaves, roots, and seeds to treat various ailments. The colorful flowers are often prepared as infusions to soothe inflammation and calm the nervous system. Medicinal preparations of the leaves can be applied topically to assist with skin irritations or consumed in teas. Extracts from the root are frequently used in traditional remedies to support digestive health and reduce swelling. Finally, the seeds are sometimes processed to provide nutritional support or specific therapeutic properties.
According to a study published by "Natural product research", the alcoholic extract of the flowers of Alcea rosea L. was investigated for its medicinal properties. Phytochemical investigation led to the isolation of 6 flavonoids, including compound 1, compound 2, compound 3, compound 4, compound 5, and compound 6. Compound 3 showed potent cytotoxic activity against the HepG-2 cell line with an IC50 of 3.8 μg/mL. Compounds 1 and 2 exhibited significant antioxidant activity, while compound 4 showed significant immune stimulant activity. This research represents the first report for the biological investigation of compound 1, which was isolated for the first time from the genus Alcea.
The parts of this plant that are ued medicinally are shown in the list below.
- flowers
- leaf
- root
- seed
What traditional systems uses this plant?
This plant, known as Alcea rosea, has been used traditionally in various folk medicine practices to treat skin irritations and digestive ailments.
Indigenous groups often utilized the plant's leaves and flowers to create poultices for soothing inflamed wounds or minor burns. In some historical herbal traditions, infusions made from the plant were consumed to help alleviate internal discomfort. The chemical properties of the species were believed to provide mild sedative effects when administered in specific dosages.
These historical applications reflect a deep cultural reliance on the botanical resources available in its natural habitat.
What are the pharmacological activities of Alcea rosea?
This plant has analgesic, anti-inflammatory, antibacterial, antioxidant, and cytotoxic pharmacological activities. The presence of bioactive compounds allows it to effectively reduce pain and inhibit inflammatory responses in biological systems. It also demonstrates the ability to combat various bacterial strains and neutralize harmful free radicals through its antioxidant properties. Furthermore, studies have indicated that certain extracts exhibit cytotoxic effects which may be relevant in cancer research. These diverse medicinal properties suggest that Alcea rosea holds significant potential for pharmaceutical development.
According to a study published by "Pharmaceutical biology", Alcea rosea has medicinal uses including anticancer, anti-inflammatory, and analgesic properties. When administered orally for 15 days at 300 mg/kg b.w., aqueous and methanol extracts of the seeds decreased blood glucose levels in diabetic rats by 24% and 46%, respectively. These extracts at 300 mg/kg b.w. significantly (p < 0.01) modulated liver antioxidant status by increasing GR to 22.5 ± 1.0 and 24.4 ± 1.02 μg GSGG utilized/min/mg of protein, GPx to 20.7 ± 1.2 and 23.6 ± 2.04 μg GSH utilized/min/mg of protein, SOD to 36.1 ± 1.7 and 39.05 ± 1.5 units/mg of protein, and CAT to 1744.5 ± 132.5 and 1956.6 ± 125.2 nmol H2O2 decomposed/min/mg of protein. Similar antioxidant results were also observed for the pancreas. These findings suggest the usefulness of Alcea rosea seeds in the management of diabetes and its complications.
The primary pharmacological activities of this plant are shown in the list below.
- analgesic
- anti-inflammatory
- antibacterial
- antioxidant
- cytotoxic
What medicinal compounds this plant contains?
This plant contains mucilaginous polysaccharides, flavonoids, and various tannins that provide its therapeutic properties. These complex carbohydrates are particularly effective at soothing inflamed mucous membranes in the digestive and respiratory tracts. The presence of flavonoids offers antioxidant support to help protect cells from oxidative stress. Additionally, the tannins contribute astringent qualities that can assist in reducing tissue swelling. Together, these chemical constituents make the plant a valuable resource for traditional herbal remedies.
According to a study published by "Indian journal of pharmacology", Alcea rosea L. is used in Asian folk medicine as a remedy for a wide range of ailments. The study investigated the effects of a hydroalcoholic extract of Alcea rosea roots administered at a dose of 170 mg/kg in drinking water. This extract demonstrated a beneficial effect in preventing and eliminating calcium oxalate deposition in the rat kidney. The presence of mucilaginous polysaccharides in the plant may be responsible for this effect. Additionally, the treatment might be related to diuretic and anti-inflammatory effects or the lowering of urinary concentrations of stone-forming constituents.
The primary medicinal compounds of this plant are shown in the list below.
- mucilaeginous polysaccharides
What health conditions is this plant used for?
This plant is used for treating asthma, chronic bronchitis, diabetes, kidney calculi, and urolithiasis. Its medicinal properties help alleviate respiratory distress by easing breathing difficulties associated with lung inflammation. The plant also plays a role in managing blood sugar levels for those living with diabetes. Furthermore, it serves as a traditional remedy for clearing urinary tract obstructions. This includes the removal of kidney calculi and the treatment of urolithiasis to prevent further complications.
According to a study published by "Pakistan journal of pharmaceuatical sciences", Alcea rosea is traditionally used to treat several conditions including airway disorders like asthma and chronic bronchitis. The study evaluated the plant's effects on guinea-pig tracheal tissues mounted in Kreb's solution at 37°C. In isolated guinea-pig trachea, Alcea rosea inhibited contractions induced by carbamylcholine and K+ (80 mM). The plant also potentiated isoprenaline concentration-response curves and suppressed Ca2+ concentration-response curves. These findings suggest that Alcea rosea causes bronchodilation through dual inhibition of phosphodiesterase enzyme and Ca2+ influx.
The main health conditions this plant is used for are shown in the list below.
- asthma
- chronic bronchitis
- airway disorders
- kidney calculi
- urolithiasis
What are the herbal preparations of this plant?
This plant is Alcea rosea, a species used to create medicinal herbal preparations including alcoholic extract and methanol fraction. Researchers utilize these specific solvent-based methods to isolate bioactive compounds from the plant's tissues. The alcoholic extract provides a broad spectrum of phytochemicals that may offer therapeutic benefits. By further refining this process into a methanol fraction, scientists can concentrate specific secondary metabolites for targeted study. These concentrated preparations serve as essential tools in evaluating the plant's potential pharmacological properties.
According to a study published by "Natural product research", the alcoholic extract of the flowers of Alcea rosea L. led to the isolation of 6 flavonoids. These isolated compounds include dihydrokaempferol-4'-O-β-d-glucopyranoside (1), dihydrokaempferol (2), kaempferol-3-O-[6″-(E-coumaroyl)]-β-d-glucopyranoside (3), kaempferol-3-O-β-d-glucopyranoside (4), apigenin (5), and kaempferol-3-O-α-l-rhamnopyranosyl-(1'″→6″)-β-d-glucopyranoside (6). Among these, compound 3 demonstrated potent cytotoxic activity against the HepG-2 cell line with an IC50 of 3.8 μg/mL. Furthermore, compounds 1 and 2 exhibited significant antioxidant activity, while compound 4 showed significant immune stimulant activity. This study also represents the first report for the biological investigation of compound 1, which was isolated for the first time from the genus Alcea.
The main herbal preparations of this plant are shown in the list below.
- alcoholic extract
- methanol fraction
What side effects this plant can have?
This plant can cause adverse health reactions including skin irritation, gastrointestinal distress, and potential allergic responses in sensitive individuals. When the plant comes into contact with the skin, it may trigger redness or a localized rash. Consuming parts of the plant can lead to stomach cramps or nausea. Some people might also experience more severe allergic symptoms like swelling or difficulty breathing. It is important to exercise caution when handling or using this species.
The main side effects this plant can have are shown in the list below.
What herbs are paired with Alcea rosea?
This plant, commonly known as pink sea rocket, pairs most effectively with coastal herbs like sea fennel, samphire, and wild fennel to enhance its salty, mustard-like profile.
These combinations work well because the briny notes of the seaside greenery complement the plant's natural peppery undertones. When used in culinary applications, adding a touch of lemon thyme can brighten the pungent flavors of the Alcea rosea. Using these specific botanical partners creates a cohesive flavor profile reminiscent of the ocean.
Such pairings are ideal for seasoning seafood or creating complex, saline-forward salads.