sweet woodruff

Names and Synonyms

Common Names

• sweet woodruff
• sweet white woodruff
• sweet woodruff
• sweet-scented bedstraw

Scientific Names

Accepted name

Synonyms

• Chlorostemma odoratum
• Asperula odorata var. trifida
• Asperula odorata
• Asterophyllum asperula
• Asterophyllum sylvaticum
• Asperula eugeniae

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 Gentianales, it is a member of the Rubiaceae family. Ultimately, it is identified by its genus, Galium.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant, known as Galium odoratum, exhibits a specific geographical range across the northern regions of the continent. In Northern Europe, it can be found growing within the borders of Denmark. Its distribution also extends to the Scandinavian landscapes of Norway and Finland. Furthermore, the species is present across the islands of Great Britain and Ireland. Together, these locations define its primary habitat within the Northern European territory.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Galium odoratum is fundamentally characterized by its preference for stable, shaded environments, specifically thriving within the understory of deciduous forests. As a component of the forest floor ecosystem, it occupies niches where light levels are moderate to low, often favoring nutrient-rich, moist, and humus-heavy soils typical of woodland habitats. This plant plays a role in the forest microhabitat by colonizing the herbaceous layer, where it benefits from the buffering effects of the canopy, which regulates temperature and maintains consistent humidity levels. Its presence is often indicative of well-established, undisturbed forest ecosystems with high organic matter content, where it competes effectively with other shade-tolerant herbaceous species for space and soil nutrients.

Habitat :

forest

Life history

The life history of Galium odoratum is characterized by its status as a perennial plant, allowing it to persist across multiple growing seasons through established root systems. Functioning as a hemicryptophyte, the plant protects its perennading buds at the soil surface, often utilizing a creeping rhizomatous growth habit to colonize forest floors. Despite its perennial nature, it maintains an evergreen physiological profile, retaining its foliage to facilitate photosynthesis even during colder periods. This combination of a perennial lifecycle and a hemicryptophyte life form ensures its stability and competitive presence within its typical shaded woodland habitats.

Deciduousness :

evergreen

Life form :

hemicryptophyte

Lifecycle :

perennial

Morphology

The morphology of Galium odoratum is characterized by its growth form as a non-woody herb and forb. It is a terrestrial, independent plant that does not function as an epiphyte or a parasite. The plant is self-supporting rather than being a liana or vine, exhibiting a prostrate shoot orientation. In terms of stature, it is a relatively low-growing species with a plant height that typically ranges from a minimum of 0.1 m to a maximum of 0.6 m, maintaining an average plant height of approximately 0.217 m.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Plant height max:

0.6 m

Plant height mean:

0.217 m

Plant height min:

0.1 m

Shoot orientation :

prostrate

Woodiness :

non-woody

Physiology

The physiology of Galium odoratum is characterized by a C3 photosynthetic pathway, which dictates its carbon fixation processes and metabolic efficiency in shaded forest environments. The plant exhibits a non-carnivorous nutritional strategy, relying entirely on autotrophic mechanisms for nutrient acquisition rather than capturing prey. Its leaf morphology is defined by a mean leaf size of 3.61 cm², a measurement that contributes to its overall surface area for gas exchange and light interception. Furthermore, the plant possesses a high mean Specific Leaf Area (SLA) of 532.05 cm²/g, indicating relatively thin and expansive leaf structures that are optimized for maximizing light harvesting in low-light habitats.

Carnivory :

non-carnivorous

Leaf size mean:

3.61 cm²

Photosynthetic pathway :

C3

Specific Leaf Area (SLA) mean:

532.05 cm²/g

Reproduction

The reproduction of Galium odoratum is characterized by a sexual cycle that typically begins in April and concludes in June. The plant utilizes a biotic pollination syndrome, primarily relying on insects, with bees being a specific and significant pollinator. While the species is capable of self-fertilization, its reproductive success is heavily tied to these animal interactions. The resulting fruit is classified as dry, containing seeds that exhibit a highly consistent volume of 5.1 mm³. These seeds are quite small, with a mean mass of approximately 0.0058885 g (ranging from a minimum of 0.00535 g to a maximum of 0.00535 g). Dispersal of the seeds is facilitated through multiple syndromes, specifically zoochorous (animal-mediated) and hydrochorous (water-mediated) methods. Notably, asexual reproduction is absent in this species, making the sexual production of these specialized seeds essential for its propagation.

Dispersal syndrome :

zoochorous

Dispersal syndrome :

hydrochorous

Flowering time :

Apr

Flowering time :

Jun

Fruit dryness :

dry

Pollination syndrome :

insect

Pollination syndrome :

bee

Pollination syndrome :

biotic

Reproduction asexual :

absent

Seed mass max:

0.00535 g

Seed mass mean:

0.0058885 g

Seed volume max:

5.1 mm³

Self fertilization :

present

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Galium odoratum has 14 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include coumarin, Anthraquinones, Asperuloside, CHLOROGENIC ACID, Coumarins.

coumarin

1. Dr. Duke
2. Antioxidants (Basel, Switzerland)

Anthraquinones

1. Dr. Duke

Asperuloside

1. Dr. Duke

CHLOROGENIC ACID

1. Antioxidants (Basel, Switzerland)

Coumarins

1. Bosnian journal of basic medical sciences

Flavonoids

1. Bosnian journal of basic medical sciences

Monotropein

1. Dr. Duke

Nicotinic acid amide

1. Dr. Duke

RUTIN

1. Antioxidants (Basel, Switzerland)

TANNIC ACID

1. Dr. Duke

Activities

Galium odoratum has 147 reported activities identified across 0 scientific publications and several other databases. The most consistently reported activities include Aldose-Reductase-Inhibitor, Allelochemic, Allergenic, Alpha-Amylase-Inhibitor, Analgesic.

Aldose-Reductase-Inhibitor

1. Dr. Duke

Allelochemic

1. Dr. Duke

Allergenic

1. Dr. Duke

Alpha-Amylase-Inhibitor

1. Dr. Duke

Analgesic

1. Dr. Duke

Anesthetic

1. Dr. Duke

Anthelmintic

1. Dr. Duke

AntiCrohn's

1. Dr. Duke

AntiHIV

1. Dr. Duke

Antiaggregant

1. Dr. Duke

Conditions

Galium odoratum has 2 reported investigations on conditions identified across 0 scientific publications and several other databases. The most consistently reported conditions include cancer, urinary tract infections.

Cancer

1. Journal of Cancer

Urinary tract infections

1. Urological research

Preparations

Galium odoratum has 1 reported preparations identified across 0 scientific publications and several other databases. The most consistently reported preparations include extracts.

Extracts

1. Antioxidants (Basel, Switzerland)
2. Urological research