Acanthus

Names and Synonyms

Common Names

• Acanthus
• Sea Holly

Scientific Names

Accepted name

Synonyms

• Dilivaria ebracteata
• Acanthus ilicifolius var. ebracteatus

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and the phylum Streptophyta, falling under the class Equisetopsida and subclass Magnoliidae. Within the order Lamiales, it is classified under the family Acanthaceae. Its specific taxonomic designation is found within the genus Acanthus.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a widespread distribution across several key regions in Asia. In China, it can be found specifically in Hainan as well as throughout China Southeast. Its presence extends into the Indian Subcontinent, where it is documented in both Bangladesh and India. Additionally, the species is located within the Indo-China region, specifically covering the Andaman Is. Overall, these locations highlight its significant tropical and subtropical range.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Life history

The life history of Acanthus ebracteatous is characterized by its status as a perennial species, meaning it possesses the biological capacity to live for multiple years, although its specific duration can be variable depending on environmental conditions and habitat stability. As a perennial, the plant undergoes recurring seasonal growth cycles, often establishing a robust root system that allows it to persist through unfavorable periods and re-emerge during optimal growing seasons. Throughout its life cycle, it progresses through distinct stages of vegetative development and reproductive phases, contributing to its long-term presence within its ecological niche. Depending on the specific environmental pressures it encounters, its growth pattern may fluctuate, yet it fundamentally maintains a multi-year existence rather than completing its life cycle within a single growing season.

Lifecycle :

perennial

Morphology

The morphology of Acanthus ebracteatus is characterized by a woody growth form, manifesting primarily as a shrub. It is a terrestrial, independent plant that does not function as a parasite or an epiphyte. In terms of stature, the plant exhibits a significant height range, with a minimum height of 1 m, a mean height of approximately 1.5 m, and the potential to reach a maximum height of up to 5 m. Although it possesses a sturdy structure, it is classified as a self-supporting plant rather than a vine, liana, or climber.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

shrub

Parasite :

independent

Plant height max:

5 m

Plant height mean:

1.5 m

Plant height min:

1 m

Woodiness :

woody

Physiology

The physiology of Acanthus ebracteatous is characterized by distinct morphological variations in its foliage and its specific metabolic processes regarding nutrient acquisition. The plant exhibits significant plasticity in its leaf dimensions, with leaf lengths ranging from a minimum of 5 cm to a mean of 8.5 cm, reaching a maximum length of 12 cm. Correspondingly, the leaf width varies from a minimum of 3 cm to a maximum of 5 cm, contributing to the overall surface area utilized for photosynthetic activity. In terms of its nutritional physiology, the plant does not function as a nitrogen fixer, meaning it relies on the uptake of available nitrogen from the soil rather than establishing symbiotic relationships to convert atmospheric nitrogen into a usable form.

Leaf length max:

12 cm

Leaf length mean:

8.5 cm

Leaf length min:

5 cm

Leaf width max:

5 cm

Leaf width min:

3 cm

Nitrogen fixer :

no

Reproduction

The reproduction of Acanthus ebracteatus is characterized by the development of specific inflorescence and fruit structures that facilitate its life cycle. The plant produces an inflorescence with a highly consistent length, ranging from a minimum of 0.006 m to a maximum of 0.007 m. Following successful pollination, the plant develops fruits that exhibit uniform dimensions; the fruit length is remarkably consistent, with a minimum, mean, and maximum value all measured at exactly 1.8 cm. This uniformity in fruit size suggests a stabilized reproductive output within its ecological niche.

Fruit length max:

1.8 cm

Inflorescence length max:

0.007 m

Inflorescence length min:

0.006 m

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Acanthus ebracteatus has 2 reported plant parts identified across 2 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include leaf, stem.

Leaf

1. Journal of ethnopharmacology

Stem

1. Carbohydrate research

Chemicals

Acanthus ebracteatus has 5 reported phytochemicals identified across 2 scientific publications and several other databases. The most consistently reported chemicals include 3-o-methylgalactose, Galacturonic acid, arabinose, galactose, rhamnose.

3-o-methylgalactose

1. Carbohydrate research

Galacturonic acid

1. Carbohydrate research

arabinose

1. Carbohydrate research

galactose

1. Carbohydrate research

rhamnose

1. Carbohydrate research

Activities

Acanthus ebracteatus has 2 reported activities identified across 2 scientific publications and several other databases. The most consistently reported activities include Antibacterial, Antioxidant.

Antibacterial

1. BMC complementary medicine and therapies

Antioxidant

1. BMC complementary medicine and therapies

Conditions

Acanthus ebracteatus has 5 reported investigations on conditions identified across 2 scientific publications and several other databases. The most consistently reported conditions include Alzheimer's disease, acne vulgaris, arthritis, atopic dermatitis, bacterial infections.

Alzheimer's disease

1. Scientific reports

Acne vulgaris

1. BMC complementary medicine and therapies

Arthritis

1. Journal of ethnopharmacology

Atopic dermatitis

1. Asian Pacific journal of allergy and immunology

Bacterial infections

1. Plants (Basel, Switzerland)

Preparations

Acanthus ebracteatus has 3 reported preparations identified across 2 scientific publications and several other databases. The most consistently reported preparations include hot water extraction, leaves, medicinal plant extracts.

Hot water extraction

1. Carbohydrate research

Leaves

1. Journal of ethnopharmacology

Medicinal plant extracts

1. Scientific reports