Coastal Bastard Toad-flax vs Lebanon Thesium

Thesium maritimum compared with Thesium libanoticum

Key Differences

• Coastal Bastard Toad-flax is Vulnerable while Lebanon Thesium is Endangered.

Taxonomic Classification

Rank	Coastal Bastard Toad-flax	Lebanon Thesium
Kingdom same	Plantae (พืช)	Plantae (พืช)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (พืชใบเลี้ยงคู่)	Magnoliopsida (พืชใบเลี้ยงคู่)
Order same	Santalales (อันดับย่านตีเมีย)	Santalales (อันดับย่านตีเมีย)
Family same	Thesiaceae	Thesiaceae
Genus same	Thesium	Thesium
Species	Thesium maritimum	Thesium libanoticum

Evolutionary Relationship

Coastal Bastard Toad-flax and Lebanon Thesium share a common ancestor at the Genus level: Thesium.

Conservation Status

Coastal Bastard Toad-flax

VU — Vulnerable

Lebanon Thesium

EN — Endangered

Physical Characteristics

Attribute	Coastal Bastard Toad-flax	Lebanon Thesium
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Coastal Bastard Toad-flax

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Lebanon Thesium

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Coastal Bastard Toad-flax

Thesium maritimum, the coastal bastard toad-flax, is a semi-parasitic herbaceous plant in the family Santalaceae native to coastal sand dunes, calcareous grassland, and scrubland along the northern Mediterranean coast of Europe, extending through the Iberian Peninsula and into parts of southwestern France. Like other members of the genus Thesium, it is a hemiparasite, maintaining chlorophyll and photosynthesizing while simultaneously tapping the root systems of neighboring grasses and herbs to extract water and nutrients through haustorial connections. The species produces small, narrow leaves and inconspicuous white to cream flowers typical of the family, lacking showy petals and relying on insect visitors for pollination. Thesium maritimum is classified as Vulnerable by the IUCN, reflecting significant population declines associated with loss and degradation of its specialized coastal habitat through tourist infrastructure development, coastal stabilization, invasive species encroachment, and sand dune fixation. Mediterranean coastal sand dune systems across Europe have been extensively modified, and the open, dynamic habitats required by this specialist species have contracted substantially over recent decades. Conservation measures include dune restoration, reduction of vehicle traffic on coastal habitats, and control of invasive species that fix and stabilize natural shifting sands.