Douglas' meadowfoam

Names and Synonyms

Common Names

• Douglas' meadowfoam
• Meadow-Foam
• meadowfoam
• Poached Egg Flower
• poached egg plant

Scientific Names

Accepted name

Regional and Traditional Names

Sources: Wikidata, Catalogue of Life

Taxonomical Classification

This plant belongs to the kingdom Plantae and the phylum Streptophyta, falling under the class Equisetopsida and subclass Magnoliidae. Within the order Brassicales, it is classified under the family Limnantheaceae. Finally, its taxonomic designation is completed by its genus, Limnanthes.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant exhibits a specific geographical distribution that spans both Europe and North America. In Northern Europe, its presence can be noted within Great Britain and Ireland. Moving across the Atlantic, the species is also found within the Northwestern United States, particularly in Oregon. Additionally, it inhabits parts of the Southwestern United States, specifically throughout California. Consequently, the range of Limnanthes douglasii covers diverse regions across two different continents.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Limnanthes douglasii is fundamentally defined by its preference for lowland environments, where it colonizes seasonal wetlands and vernal pools. These specialized habitats are characterized by periodic inundation during the winter and spring months, followed by a drying phase as the seasons progress. The plant thrives in these saturated lowland soils, which are often nutrient-rich but subject to significant fluctuations in moisture levels. By occupying these transient aquatic systems, Limnanthes douglasii utilizes a niche that minimizes competition from more permanent woody vegetation, relying on the predictable cycle of wetting and drying to complete its life cycle within the specific soil profiles found in low-lying topographical areas.

Habitat :

Lowland

Life history

The life history of Limnanthes douglasii is characterized by an annual lifecycle, meaning the plant completes its entire biological progression—from germination to seed production—within a single growing season. As a therophyte, it avoids the stresses of unfavorable environmental conditions by existing primarily in the form of resistant seeds during dormant periods, with the vegetative structure emerging only when conditions are optimal for growth. This life form strategy allows the plant to rapidly exploit seasonal resources, transitioning through its developmental stages to ensure the continuity of the species through seed dispersal before the onset of seasonal changes.

Life form :

therophyte

Lifecycle :

annual

Morphology

The morphology of Limnanthes douglasii is characterized by its growth as a non-woody herb, specifically classified as a forb. This plant is a self-supporting organism that does not exhibit climbing or vining behavior, nor does it function as a parasite or an epiphyte, maintaining a primarily terrestrial existence. Its physical stature is relatively low, with a plant height ranging from a minimum of 0.1 m to a maximum of 0.5 m. Although its habitat can span a spectrum of moisture levels, its ecological profile includes aquatic, semiaquatic, and terrestrial traits.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Growth form :

forb

Parasite :

independent

Plant height max:

0.5 m

Plant height min:

0.1 m

Woodiness :

non-woody

Physiology

The physiology of Limnanthes douglasii is primarily defined by its specialized metabolic processes used to acquire nutrients in nitrogen-poor environments. While some members of the Linaceae family exhibit unique nutrient-uptake strategies, Limnanthes douglasii is strictly non-carnivorous, meaning it lacks the specialized anatomical structures such as trap mechanisms, digestive enzymes, or sticky mucilage required to capture and assimilate prey. Instead, its physiological survival relies on a traditional autotrophic model, utilizing chlorophyll-based photosynthesis to convert light energy into chemical energy. To compensate for nutrient-limited soils, the plant employs an efficient root system designed for the uptake of dissolved minerals and organic matter from the substrate. Its metabolic pathways are optimized for seasonal growth cycles, focusing on rapid biomass accumulation and the synthesis of secondary metabolites that support reproductive success within its specific ecological niche.

Carnivory :

non-carnivorous

Reproduction

The reproduction of Limnanthes douglasii is characterized by a distinct seasonal flowering cycle and specific seed production metrics. The flowering period for this species typically commences in May and extends through September, though the timing can be variable depending on environmental conditions. During this reproductive phase, the plant produces seeds that exhibit measurable variance in size; the seed mass ranges from a minimum of 0.00315 g to a maximum of 0.013618 g, with a calculated mean seed mass of approximately 0.0058869868 g.

Flowering time :

May

Flowering time :

Sep

Seed mass max:

0.013618 g

Seed mass mean:

0.0058869868 g

Seed mass min:

0.00315 g

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Limnanthes douglasii has 1 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include Glucolimnanthin.

Glucolimnanthin

1. Carcinogenesis