Chalk Screw-moss vs truncated screw moss

Tortula vahliana compared with Tortula truncata

Key Differences

• Chalk Screw-moss is Vulnerable while truncated screw moss is Least Concern.

Taxonomic Classification

Rank	Chalk Screw-moss	truncated screw moss
Kingdom same	Plantae (พืช)	Plantae (พืช)
Phylum same	Bryophyta	Bryophyta
Class same	Bryopsida (Bryopsida)	Bryopsida (Bryopsida)
Order same	Pottiales (Pottiales)	Pottiales (Pottiales)
Family same	Pottiaceae	Pottiaceae
Genus same	Tortula	Tortula
Species	Tortula vahliana	Tortula truncata

Evolutionary Relationship

Chalk Screw-moss and truncated screw moss share a common ancestor at the Genus level: Tortula.

Conservation Status

Chalk Screw-moss

VU — Vulnerable

truncated screw moss

LC — Least Concern

Physical Characteristics

Attribute	Chalk Screw-moss	truncated screw moss
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chalk Screw-moss

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Norway, and Portugal. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

truncated screw moss

Habitat

Native to Asia and Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and North America (United States).

Chalk Screw-moss

The Chalk Screw-moss (Tortula vahliana) is a species in the genus Tortula. It is currently classified as Vulnerable on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.

Shared Countries

Both species can be found in 3 countries:

🇧🇪 Belgium 🇳🇴 Norway 🇵🇹 Portugal