Buck's horn groundsel

Names and Synonyms

Common Names

• Buck's horn groundsel
• Jaffa groundsel

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 and class Equisetopsida. Within the subclass Magnoliidae and order Asterales, it is a member of the Asteraceae family. Specifically, it is categorized under the genus Senecio.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a diverse geographical distribution spanning across several continents and regions. In Southwestern Europe, it can be found growing within the borders of Spain. Its presence extends to Southeastern Europe, specifically inhabiting the island of Sicilia. Moving toward Eastern Europe, the species is located in both Krym and South European Russia. Finally, its range reaches into Northern Africa, where it is documented in Algeria.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Senecio glaucus is defined by its remarkable adaptive capacity to a wide vertical distribution, spanning an elevational range from sea level (0 m AMSL) to a maximum altitude of 4600 m AMSL, with a mean elevation of approximately 3850 m AMSL. This species thrives in diverse environmental niches, specifically showing a preference for meadows and saline places, where it can withstand varying soil compositions and moisture levels. Its ability to colonize both lowland saline environments and high-altitude alpine zones suggests a high degree of physiological plasticity, allowing it to persist across a vast gradient of temperature and atmospheric pressure.

Elevational range max:

4600 m AMSL

Elevational range mean:

3850 m AMSL

Elevational range min:

0 m AMSL

Habitat :

meadows, saline places

Life history

The life history of Senecio glaucus is characterized by its classification as an annual plant, meaning it completes its entire developmental cycle—from germination and vegetative growth to flowering and seed production—within a single growing season. Functionally, it operates as a therophyte, a life form where the majority of the plant's biomass dies back at the end of the season, leaving only seeds to persist through unfavorable environmental conditions to ensure the survival of the next generation.

Life form :

therophyte

Lifecycle :

annual

Morphology

The morphology of Senecio glaucus is characterized by its growth as a non-woody herb, exhibiting a self-supporting habit that does not require climbing structures. As an independent organism, it functions without parasitic or epiphytic dependencies, maintaining a terrestrial existence rather than an aquatic or semiaquatic one. The plant typically maintains a relatively low stature, with a height ranging from a minimum of 0.08 m to a maximum of 0.5 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Parasite :

independent

Plant height max:

0.5 m

Plant height min:

0.08 m

Woodiness :

non-woody

Physiology

The physiology of Senecio glaucus is characterized by specialized adaptations for water conservation and efficient resource management in arid environments. A defining physiological feature is its high degree of succulence, which allows the plant to store significant quantities of water within its fleshy tissues to mitigate the effects of drought and high evaporation rates. This water-storage capacity is supported by a specialized cellular structure designed to maintain turgor pressure even during extended dry periods. Complementing this moisture retention strategy is the plant's morphological configuration, specifically its linear leaf form, which minimizes the surface-area-to-volume ratio. This reduced surface area is a critical physiological adaptation that limits the area available for transpiration, thereby significantly reducing water loss through the stomata. Together, these traits facilitate a highly efficient metabolic state that enables the plant to thrive in habitats where water availability is sporadic.

Leaf form :

linear

Succulence :

yes

Reproduction

The reproduction of Senecio glaucus is characterized by its distinct flowering and fruiting stages, featuring bright yellow flowers that are arranged in a raceme inflorescence. These flowers vary in width, ranging from a minimum of 1.5 cm to a maximum of 3 cm. The flowering period is quite extensive and variable, with the season beginning as early as December and concluding around May. Following pollination, the plant produces fruit in the form of an achene. These fruits are consistently small, with a minimum, mean, and maximum length of 0.3 cm, and they are classified as indehiscent, meaning they do not naturally split open at maturity to release seeds.

Dehiscence :

indehiscent

Flower colour :

yellow

Flower width max:

3 cm

Flower width min:

1.5 cm

Flowering time :

Dec

Flowering time :

May

Fruit length max:

0.3 cm

Fruit type :

achene

Inflorescence :

raceme

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Senecio glaucus has 6 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include 4,5-di-epi-Aristolochene, Dehydrofukinone, Gallic acid, P-CYMENE, Phytol.

4,5-di-epi-Aristolochene

1. Chemistry & biodiversity

Dehydrofukinone

1. Chemistry & biodiversity

Gallic acid

1. Evidence-based complementary and alternative medicine : eCAM

P-CYMENE

1. Chemistry & biodiversity

Phytol

1. Chemistry & biodiversity

Vanillic acid

1. Evidence-based complementary and alternative medicine : eCAM

Activities

Senecio glaucus has 4 reported activities identified across 0 scientific publications and several other databases. The most consistently reported activities include Antifungal, Antimicrobial, Antioxidant, Cytotoxic.

Antifungal

1. Chemistry & biodiversity

Antimicrobial

1. Chemistry & biodiversity

Antioxidant

1. Evidence-based complementary and alternative medicine : eCAM

Cytotoxic

1. Evidence-based complementary and alternative medicine : eCAM

Conditions

Senecio glaucus has 1 reported investigations on conditions identified across 0 scientific publications and several other databases. The most consistently reported conditions include Candida glabrata.

Candida glabrata

1. Chemistry & biodiversity