Joint Pine

Names and Synonyms

Common Names

• Joint Pine

Scientific Names

Accepted name

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and is classified under the phylum Streptophyta within the class Equisetopsida. It falls into the subclass Gnetidae and the order Ephedrales, specifically being a member of the family Ephedraceae. Within this taxonomic hierarchy, it is categorized under the genus Ephedra as the species Ephedra fragilis.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant is primarily distributed across various regions within Southwestern Europe. Specifically, it can be found growing in the Baleares islands, Portugal, and Spain. Its range also extends into Southeastern Europe, where it inhabits certain territories. Within this southeastern region, the species is notably present in Italy. Finally, it is also documented growing on the island of Sicilia.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Ephedra fragilis is characterized by its ability to thrive across a broad altitudinal gradient, spanning from sea level up to a maximum elevation of 1100 m AMSL. This wide elevational range suggests a high degree of adaptability to varying atmospheric pressures and temperature fluctuations found in coastal and lowland habitats. Typically found in arid or semi-arid environments, the plant is well-suited to sandy soils and saline conditions, often colonizing dunes or rocky substrates where moisture levels may be inconsistent. Its distribution within this 0 to 1100 m AMSL range indicates an ecological niche that bridges maritime influences with inland desert or scrubland ecosystems, allowing it to withstand significant shifts in microclimates.

Elevational range max:

1100 m AMSL

Elevational range min:

0 m AMSL

Life history

The life history of Ephedra fragilis is characterized by its specific growth habit and survival strategies within its ecological niche, classified primarily as a nanophanerophyte. This life form indicates that the plant maintains its photosynthetic shoots at a very low height, typically just above the ground level, which helps it withstand harsh environmental conditions such as wind or temperature fluctuations. While it exhibits traits consistent with a nanophanerophyte, its structural development also relates to the broader classification of phanerophyte, as it possesses visible aerial shoots that facilitate reproduction and energy production. This growth pattern allows the species to navigate its specific habitat by keeping its vital organs close to the substrate while maintaining the necessary physiological functions for long-term survival.

Life form :

nanophanerophyte

Life form :

phanerophyte

Morphology

The morphology of Ephedra fragilis is characterized by its growth form as a woody shrub, reaching a maximum plant height of approximately 2 meters. It functions as an independent organism, neither acting as a parasite nor as an epiphyte, as it maintains a primarily terrestrial existence. While it is categorized within a range of habitats including aquatic and semiaquatic environments, its fundamental habit is terrestrial. The plant exhibits a facultative climbing tendency, behaving similarly to a liana or vine in certain contexts, though it remains a distinct shrubby structure.

Aquatic :

terrestrial

Climber :

liana

Climber :

facultative

Epiphyte :

terrestrial

Growth form :

shrub

Parasite :

independent

Plant height max:

2 m

Woodiness :

woody

Physiology

The physiology of Ephedra fragilis is characterized by specialized adaptations to arid environments, primarily through its highly reduced vegetative structures. A defining physiological trait is the extreme minimization of surface area to reduce transpiration, manifested in its diminutive leaves. The leaf length is remarkably small, with a maximum leaf length of approximately 0.2 cm, which functions more as protective sheaths for the nodes rather than primary photosynthetic organs. Consequently, the plant relies heavily on its green, photosynthetic stems to facilitate carbon fixation and nutrient transport. This stem-based photosynthesis allows the plant to maintain metabolic processes while minimizing water loss through stomatal activity. The vascular system is optimized to support these succulent-like stems, ensuring efficient movement of water and solutes across the plant's structure despite the minimal presence of traditional foliage.

Leaf length max:

0.2 cm

Reproduction

The reproduction of Ephedra fragilis is characterized by a dioecious sexual system, meaning individual plants are either male or female. The flowering period typically commences in March and concludes in May, though the timing can be variable. Following pollination, the plant produces fleshy fruit in the form of a cone. These cones are distinctively orange in color and possess dimensions ranging from a minimum length of 0.7 cm to a maximum of 0.9 cm, with a width varying between 0.25 cm and 0.3 cm. The seeds contained within these fruits have a mean mass of approximately 0.02043 g, with values ranging from 0.01586 g to 0.025 g, and a consistent seed volume of 15 mm³. Dispersal of the seeds follows a zoochorous syndrome, relying on animals for the spread of the species.

Dispersal syndrome :

zoochorous

Flowering time :

Mar

Flowering time :

May

Fruit colour :

orange

Fruit dryness :

fleshy

Fruit length max:

0.9 cm

Fruit length min:

0.7 cm

Fruit type :

cone

Fruit width max:

0.3 cm

Fruit width min:

0.25 cm

Reproduction sexual :

dioecious

Seed mass max:

0.025 g

Seed mass mean:

0.02043 g

Seed mass min:

0.01586 g

Seed volume max:

15 mm³

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Ephedra fragilis has 8 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include CATECHIN, Flavonoids, Hydroxycinnamic Acids, RUTIN, Tannins.

CATECHIN

1. Natural product research

Flavonoids

1. Natural product research

Hydroxycinnamic Acids

1. Natural product research

RUTIN

1. Natural product research

Tannins

1. Natural product research

caffeic acid

1. Natural product research

flavonols

1. Natural product research

polyphenols

1. Natural product research

Preparations

Ephedra fragilis has 2 reported preparations identified across 0 scientific publications and several other databases. The most consistently reported preparations include decoction, infusion.

Decoction

1. Natural product research

Infusion

1. Natural product research