Spiny rush

Names and Synonyms

Common Names

• Sharp Rush
• Spiny Rush

Scientific Names

Accepted name

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and the phylum Streptophyta, specifically within the class Equisetopsida. It is further classified under the subclass Magnoliidae and the order Poales, falling into the family Juncaceae. Ultimately, it is identified by its genus name, Juncus.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a varied geographical distribution across several European regions. In Northern Europe, its presence is documented in both Great Britain and Ireland. Moving toward the Mediterranean, it can be found throughout various parts of Southwestern Europe. Specifically, its range includes the islands of Baleares and Corse. Additionally, the species is widely distributed across the mainland of France.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Juncus acutus is characterized by a broad altitudinal distribution and a preference for specific environmental niches. It thrives across a vast elevational range, spanning from sea level at 1 m AMSL to high-altitude reaches of up to 2400 m AMSL. Its primary habitat is categorized as coastal, where it adapts to the unique stressors of maritime environments. Furthermore, the species exhibits biological defenses, employing specific evolutionary mechanisms to protect itself from herbivory or environmental pressures.

Defense :

yes

Elevational range max:

2400 m AMSL

Elevational range min:

1 m AMSL

Habitat :

Coastal

Life history

The life history of Juncus acutus is characterized by its status as a perennial species, allowing it to persist through multiple growing seasons. It functions as a helophyte, thriving in transitional habitats between aquatic and terrestrial environments, while its growth habit is specifically classified as a hemicryptophyte, with its perennating buds protected at or near the soil surface. Furthermore, the plant maintains an evergreen nature, retaining its foliage throughout the year to sustain its biological processes.

Deciduousness :

evergreen

Life form :

helophyte

Life form :

hemicryptophyte

Lifecycle :

perennial

Morphology

The morphology of Juncus acutus is characterized by a graminoid growth form, presenting as a non-woody herb. It is a self-supporting plant that does not function as a climber or a liana, maintaining an independent existence without parasitic behavior. As a terrestrial species, it does not exhibit aquatic or epiphytic habits. The plant's stature varies significantly, with a minimum height of 0.3 m, a mean height of 0.7 m, and a maximum potential height reaching up to 2 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

graminoid

Parasite :

independent

Plant height max:

2 m

Plant height mean:

0.7 m

Plant height min:

0.3 m

Woodiness :

non-woody

Physiology

The physiology of Juncus acutus is characterized by a C3 photosynthetic pathway, which dictates its metabolic carbon fixation process. Its morphological adaptations include orbicular leaf forms that exhibit a mean width of 0.5 cm, with specific measurements ranging from a minimum of 0.2 cm to a maximum of 0.5 cm. Furthermore, this species does not function as a nitrogen fixer, relying instead on external soil nutrient availability for its nitrogen requirements.

Leaf form :

orbicular

Leaf width mean:

0.5 cm

Leaf width min:

0.2 cm

Nitrogen fixer :

no

Photosynthetic pathway :

C3

Reproduction

The reproduction of Juncus acutus involves both sexual and asexual mechanisms, with the sexual process characterized by bisexual flowers arranged in a panicle inflorescence. The flowers are green in color and follow an abiotic pollination syndrome, specifically utilizing wind for pollination. While the plant exhibits a flowering period that typically begins in April and concludes in June, self-fertilization is noted as absent, emphasizing the importance of external pollination. Following successful fertilization, the plant develops brown, dehiscence-type capsules as its fruit type. These fruits generally measure between 0.4 cm and 0.6 cm in length, with a mean length of 0.5 cm. Each capsule is highly prolific, containing more than 1,000 seeds. The seeds themselves are quite small, with a mean mass of approximately 0.000835 g, though they range from a minimum of 0.00004 g to a maximum of 0.00705 g. Dispersal of the seeds occurs via a zoochorous syndrome, specifically through epizoochory, where seeds are transported by animals.

Dehiscence :

dehiscent

Dispersal syndrome :

zoochorous

Dispersal syndrome :

epizoochorous

Flower colour :

green

Flowering time :

Apr

Flowering time :

Jun

Fruit colour :

brown

Fruit length max:

0.6 cm

Fruit length mean:

0.5 cm

Fruit length min:

0.4 cm

Fruit type :

capsule

Inflorescence :

panicle

Pollination syndrome :

wind

Pollination syndrome :

abiotic

Reproduction asexual :

present

Reproduction sexual :

bisexual

Seed mass max:

0.00705 g

Seed mass mean:

0.000835444333333333 g

Seed mass min:

4e-05 g

Seeds_per_fruit :

>1000

Self fertilization :

absent

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Juncus acutus has 1 reported plant parts identified across 1 scientific publications and several other databases that are studied for medicinal purposes. The most consistently reported plant part include stem.

Stem

1. Molecules (Basel, Switzerland)

Chemicals

Juncus acutus has 2 reported phytochemicals identified across 1 scientific publications and several other databases. The most consistently reported chemicals include Luteolin 7-O-glucoside, luteolin.

Luteolin 7-O-glucoside

1. Molecules (Basel, Switzerland)

luteolin

1. Molecules (Basel, Switzerland)

Activities

Juncus acutus has 1 reported activities identified across 1 scientific publications and several other databases. The most consistently reported activities include Antiviral.

Antiviral

1. Molecules (Basel, Switzerland)

Medicinal Uses

Juncus acutus has 2 reported medicinal uses identified across 1 scientific publications and several other databases. The most consistently reported uses include HCov-229E, human coronavirus 229E.

Most Reported Uses

Preparations