Centaurea solstitialis

Names and Synonyms

Scientific Names

Accepted name

Distribution

This plant exhibits a diverse geographical distribution across several regions of Europe. In Northern Europe, its presence can be noted in both Great Britain and Norway. Moving toward the central part of the continent, it is also found throughout Middle Europe. Specifically, its range includes countries such as Austria and Belgium. Finally, the species extends its reach into the Czechia-Slovakia region.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Centaurea solsstitialis is characterized by its ability to colonize a diverse array of environments, ranging from lowland areas to higher altitudes. It thrives in various landscapes, including hills, mountains, stony places, and ruderal sites, demonstrating a high degree of adaptability to disturbed or rocky terrains. Its vertical distribution is extensive, spanning an elevational range from 0 m AMSL up to a maximum of 1645 m AMSL.

Elevational range max:

1645 m AMSL

Elevational range min:

0 m AMSL

Habitat :

hills, mountains, ruderal sites, stony places

Life history

The life history of Centaurea solsstitialis is characterized by a rapid developmental strategy defined by its classification as an annual species. As a therophyte, the plant completes its entire life cycle within a single growing season, relying on seeds to survive unfavorable periods and ensure the continuity of the next generation. Structurally, it functions as a hemicryptophyte, meaning its perennating buds are located at or just below the soil surface, allowing it to emerge effectively when environmental conditions become favorable. This combination of an annual lifecycle and a therophytic life form enables the plant to exploit seasonal resources efficiently, rapidly progressing from germination to flowering and seed production before the onset of seasonal stress.

Life form :

hemicryptophyte

Life form :

therophyte

Lifecycle :

annual

Morphology

The morphology of Centaurea solstitialis is characterized by its growth form as a non-woody herb, specifically categorized as a forb. This self-supporting plant does not function as a climber or a parasite, maintaining an independent existence within its habitat. It is a terrestrial species, lacking any aquatic or epiphytic tendencies. In terms of stature, the plant exhibits significant variability in height, ranging from a minimum of 0.15 m to a maximum of 1 m, with an average plant height of approximately 0.57 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Plant height max:

1 m

Plant height mean:

0.57 m

Plant height min:

0.15 m

Woodiness :

non-woody

Physiology

The physiology of Centaurea solstitialis is characterized by a C3 photosynthetic pathway, which dictates its carbon fixation processes and metabolic efficiency in varying environmental conditions. As a non-carnivorous species, it relies entirely on soil-based nutrient uptake rather than the capture of prey for nitrogen. Its foliar morphology plays a crucial role in its resource management, exhibiting a mean leaf size of 9.6125 cm² and a mean leaf width of 2 cm, though individual leaf widths can be as narrow as 0.2 cm and reach a maximum of 0.8 cm. The leaf length shows significant variability, with a maximum recorded length of 20 cm. Furthermore, the plant maintains a mean Specific Leaf Area (SLA) of 277.7 cm²/g, a physiological indicator that reflects its leaf mass per area and its strategy regarding light interception and water-use efficiency.

Carnivory :

non-carnivorous

Leaf length max:

20 cm

Leaf size mean:

9.6125 cm²

Leaf width max:

0.8 cm

Leaf width mean:

2 cm

Leaf width min:

0.2 cm

Photosynthetic pathway :

C3

Specific Leaf Area (SLA) mean:

277.7 cm²/g

Reproduction

The reproduction of Centaurea solsstitialis is characterized by a sexual reproductive cycle that relies on biotic pollination syndromes, specifically utilizing insects for the transfer of pollen. The flowering period for this species typically begins in July and extends through September. During the reproductive process, self-fertilization is present, allowing for successful seed production. The resulting fruit is classified as an achene, which is indehiscent in nature, with an average fruit length of 0.3 cm. The seeds produced vary in mass, with a minimum of 0.0018 g, a mean of 0.002541 g, and a maximum of 0.005 g. For the distribution of offspring, the plant employs an anemochorous dispersal syndrome, meaning the seeds are dispersed by the wind. Notably, asexual reproduction is absent in this species, making sexual reproduction the primary driver of its life cycle.

Dehiscence :

indehiscent

Dispersal syndrome :

anemochorous

Flowering time :

Jul

Flowering time :

Sep

Fruit length mean:

0.3 cm

Fruit type :

achene

Pollination syndrome :

insect

Pollination syndrome :

biotic

Reproduction asexual :

absent

Seed mass max:

0.005 g

Seed mass mean:

0.002541 g

Seed mass min:

0.0018 g

Self fertilization :

present

Sources: Global Inventory of Floras and Traits (GIFT)

Plant Parts

Centaurea solstitialis 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 flower.

Flower

1. Journal of ethnopharmacology