Toothwort

Names and Synonyms

Common Names

• Toothwort
• Clown's Lungwort
• Common Toothwort
• Corpseflower

Scientific Names

Accepted name

Synonyms

• Anblatum tournefortii
• Lathraea tatrica
• Lathraea simplex
• Lathraea squamaria var. major
• Lathraea squamaria var. clandestina
• Lathraea staminea
• Lathraea squamaria var. vulgaris
• Clandestina squamaria
• Lathraea squamaria f. clandestina
• Lathraea squamaria f. grandiflora
• Lathraea squamaria f. vulgaris
• Lathraea squamaria subf. nivea
• Lathraea squamaria subf. communis
• Lathraea squamaria subf. staminea
• Squamaria orobanche
• Lathraea squamaria var. nivea
• Lathraea squamaria var. grandiflora
• Lathraea squamaria f. erecta
• Lathraea squamaria var. erecta
• Lathraea squamaria subsp. tatrica
• Lathraea squamaria subsp. squamaria

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. As a member of the subclass Magnoliidae and the order Lamiales, it falls under the family Orobanchaceae. Its specific taxonomic identification is completed by its placement in the genus Lathraea.

Sources: The World Checklist of Vascular Plants (WCVP)

Distribution

This plant, Lathraea squamaria, exhibits a specific distribution pattern across several regions of Northern Europe. It can be found growing in the natural habitats of Denmark. Additionally, its presence is documented throughout the landscapes of Finland. The species also extends its range to include Great Britain and Ireland. Finally, its geographical reach encompasses the coastal and inland areas of Norway.

Sources: The World Checklist of Vascular Plants (WCVP)

Botanical Identification

Ecology

The ecology of Lathraea squamaria is fundamentally defined by its specialized existence within forest ecosystems. As a holoparasitic plant, it does not possess chlorophyll and is incapable of photosynthesis, meaning its ecological role is entirely dependent on the presence of specific host trees. It thrives in the shaded, moist understory of deciduous and mixed forests, where it establishes a parasitic relationship by attaching its specialized roots, or haustoria, to the root systems of its hosts. This dependency dictates its distribution, as the plant can only colonize areas where suitable host vegetation is established. The forest floor provides the necessary stable microclimate and organic matter required to support the complex underground network of both the parasite and its hosts, making the structural integrity of the forest canopy and the health of the soil essential to its survival and reproductive success.

Habitat :

forest

Life history

The life history of Lathraea squamaria is characterized by its status as a perennial organism, allowing it to persist across multiple growing seasons. It functions as a cryptophyte, utilizing specialized underground structures to survive unfavorable periods, and is specifically classified as a geophyte, relying on these subterranean storage organs for its survival strategy. Furthermore, the plant exhibits a deciduous nature, shedding its parts in accordance with seasonal cycles.

Deciduousness :

deciduous

Life form :

geophyte

Life form :

cryptophyte

Lifecycle :

perennial

Morphology

The morphology of Lathraea squamaria is characterized by its growth form as a non-woody herb. The plant typically maintains a relatively low stature, with a height ranging from a minimum of 0.07 m to a maximum of 0.3 m, resulting in an average plant height of approximately 0.135 m. As a terrestrial species, it does not exhibit epiphytic or aquatic characteristics, instead growing directly in the soil. Although it possesses a self-supporting climbing habit rather than acting as a vine or liana, its structural development is defined by its status as an obligatory parasite.

Aquatic :

terrestrial

Climber :

self-supporting

Epiphyte :

terrestrial

Growth form :

herb

Parasite :

obligatory

Plant height max:

0.3 m

Plant height mean:

0.135 m

Plant height min:

0.07 m

Woodiness :

non-woody

Physiology

The physiology of Lathraea squamaria is characterized by its specialized existence as a holoparasitic organism, a life strategy that fundamentally dictates its metabolic processes. Unlike most vegetation, this species lacks chlorophyll and is therefore incapable of photosynthesis, rendering it strictly non-carnivorous in its nutritional acquisition. Instead of capturing and digesting prey to supplement nitrogen levels, it relies entirely on a parasitic relationship with the root systems of host plants, typically members of the Rubus or Salix genera. Its physiological function is centered around a highly developed haustorium, a specialized organ that penetrates the host's vascular tissues to establish a direct physiological bridge. Through this connection, the plant engages in the active uptake of water, minerals, and organic carbon—specifically sucrose—directly from the host's xylem and phloem. This specialized nutrient diversion allows the plant to bypass the need for autotrophic energy production or the complex enzymatic processes required for carnivory, focusing its metabolic energy instead on rapid growth and reproductive development during its seasonal cycles.

Carnivory :

non-carnivorous

Reproduction

The reproduction of Lathraea squamaria is driven primarily by sexual processes, as asexual reproduction is absent in this species. The flowering period typically commences in March and concludes in May, though the timing can be variable. During the flowering stage, the plant utilizes an insect pollination syndrome, specifically involving bees as key pollinators. Self-fertilization is present, allowing for successful seed production. The resulting fruit is a dehiscent capsule, which opens to release seeds characterized by a very small mass; the seed mass ranges from a minimum of 0.00055 g to a maximum of 0.0008 g, with an average mass of approximately 0.0006683 g. Following maturation, the dispersal of seeds is achieved through both zoochorous and hydrochorous syndromes, utilizing animals and water to facilitate the spread of the species.

Dehiscence :

dehiscent

Dispersal syndrome :

zoochorous

Dispersal syndrome :

hydrochorous

Flowering time :

Mar

Flowering time :

May

Fruit type :

capsule

Pollination syndrome :

insect

Pollination syndrome :

bee

Reproduction asexual :

absent

Seed mass max:

8e-04 g

Seed mass mean:

0.0006683 g

Seed mass min:

0.00055 g

Self fertilization :

present

Sources: Global Inventory of Floras and Traits (GIFT)

Chemicals

Lathraea squamaria has 4 reported phytochemicals identified across 0 scientific publications and several other databases. The most consistently reported chemicals include Aucuboside, D-mannitol, fructose, glucose.

Aucuboside

1. Polish journal of pharmacology and pharmacy

D-mannitol

1. Polish journal of pharmacology and pharmacy

fructose

1. Polish journal of pharmacology and pharmacy

glucose

1. Polish journal of pharmacology and pharmacy