Dwarf Milkwort

Names and Synonyms

Common Names

• Dwarf Milkwort

Scientific Names

Accepted name

Synonyms

• Polygala amarella subsp. austriaca
• Polygala amara var. austriaca
• Polygala amara subsp. amarella
• Polygala amara var. uliginosa
• Polygala polymorpha var. austriaca
• Polygala calcarea subsp. amarella
• Polygala amara subsp. austriaca
• Polygala decipiens
• Polygala calcarea subsp. austriaca
• Polygala amarella var. uliginosa
• Polygala austriaca
• Polygala amara subsp. uliginosa
• Polygala subvirgata
• Polygala uliginosa
• Polygala amara var. grenieri
• Polygala calcarea subsp. amara
• Polygala polymorpha var. uliginosa
• Polygala amarella var. salsa
• Polygala fatua

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 under the subclass Magnoliidae and the order Fabales, specifically being a member of the family Polygalaceae. Finally, it is categorized under the genus Polygala.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a specific geographical range across several regions of Northern Europe. It can be found growing naturally within the borders of Denmark and Finland. Furthermore, its distribution extends to the various landscapes of Great Britain. The species is also documented throughout the territories of Norway. Finally, its presence is well-established across the country of Sweden.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Polygala amarella is defined by its preference for specific moisture-rich environments, primarily thriving within meadows that exhibit wet conditions and in swampy terrains. These habitats provide the consistent hydration and soil composition necessary for the species to establish itself effectively. By colonizing these damp, open areas, the plant occupies a specialized ecological niche where it can compete with other meadow flora while benefiting from the high water table characteristic of marshy landscapes.

Habitat :

meadows: wet, swamps

Life history

The life history of Polygala amarella is characterized by its existence as a perennial plant, allowing it to persist in its habitat over multiple growing seasons. As a hemicryptophyte, it maintains its perennuating buds at the soil surface, protected by leaf litter or ground cover during unfavorable periods. This species exhibits a deciduous nature, shedding its foliage as part of its seasonal cycle.

Deciduousness :

deciduous

Life form :

hemicryptophyte

Lifecycle :

perennial

Morphology

The morphology of Polygala amarella is characterized by its growth form as a non-woody herb, manifesting as a self-supporting plant that does not exhibit climbing or parasitic behaviors. It is an independent, terrestrial species that thrives in non-aquatic environments. In terms of stature, the plant maintains a low profile, with a minimum height of 0.05 m, a maximum height of 0.25 m, and an average plant height of approximately 0.054 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Parasite :

independent

Plant height max:

0.25 m

Plant height mean:

0.054 m

Plant height min:

0.05 m

Woodiness :

non-woody

Physiology

The physiology of Polygala amarella is characterized by a C3 photosynthetic pathway, a common metabolic strategy for plants in temperate environments that allows for efficient carbon fixation under moderate light and temperature conditions. Morphologically, the plant exhibits a relatively small leaf size, with a mean surface area of 0.6364 cm², reflecting its structural adaptations to its ecological niche. Furthermore, its leaf architecture is defined by a mean Specific Leaf Area (SLA) of 205.63 cm²/g, a metric that provides insight into its leaf thickness and resource allocation strategies regarding light interception and biomass density.

Leaf size mean:

0.6364 cm²

Photosynthetic pathway :

C3

Specific Leaf Area (SLA) mean:

205.63 cm²/g

Reproduction

The reproduction of Polygala amarella is characterized by a specific seasonal flowering period and specialized biological mechanisms. The flowering process typically commences in April and concludes in June, though the timing can be variable across different environments. During this period, the plant utilizes a biotic pollination syndrome, specifically relying on insects to facilitate the transfer of pollen. Notably, self-fertilization is absent in this species, necessitating external agents for successful sexual reproduction. Once fertilization occurs, the plant produces very small seeds with a highly consistent mass; the mean seed mass is approximately 0.000825 g, with recorded values ranging between a minimum of 0.00081 g and a maximum of 0.00081 g. Following seed development, the plant employs an anemochorous dispersal syndrome, meaning the seeds are dispersed by the wind to colonize new habitats.

Dispersal syndrome :

anemochorous

Flowering time :

Apr

Flowering time :

Jun

Pollination syndrome :

insect

Pollination syndrome :

biotic

Seed mass max:

0.00081 g

Seed mass mean:

0.000825 g

Self fertilization :

absent

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Polygala amarella has 1 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include Polygalasaponin Xxviii.

Polygalasaponin Xxviii

1. Journal of natural products

Preparations

Polygala amarella has 1 reported preparations identified across 0 scientific publications and several other databases. The most consistently reported preparations include callus tissue culture.

Callus tissue culture

1. Journal of natural products