Spinnweben-Hauswurz vs Echte Hauswurz, Dachwurz

Sempervivum arachnoideum compared with Sempervivum tectorum

Key Differences

Spinnweben-Hauswurz is Not Evaluated while Echte Hauswurz, Dachwurz is Least Concern.

Taxonomic Classification

Rank	Spinnweben-Hauswurz	Echte Hauswurz, Dachwurz
Kingdom same	Plantae (Pflanzen)	Plantae (Pflanzen)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order same	Saxifragales (Steinbrechartige)	Saxifragales (Steinbrechartige)
Family same	Crassulaceae	Crassulaceae
Genus same	Sempervivum	Sempervivum
Species	Sempervivum arachnoideum	Sempervivum tectorum

Evolutionary Relationship

Spinnweben-Hauswurz and Echte Hauswurz, Dachwurz share a common ancestor at the Genus level: Sempervivum.

Ansehen Genus: Sempervivum

Conservation Status

Spinnweben-Hauswurz

NE — Not Evaluated

Echte Hauswurz, Dachwurz

LC — Least Concern

Physical Characteristics

Attribute	Spinnweben-Hauswurz	Echte Hauswurz, Dachwurz
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Spinnweben-Hauswurz

Habitat

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

Range

Found across Asia (Taiwan) and Europe (7 countries).

Echte Hauswurz, Dachwurz

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (17 countries), and North America (Canada, United States).

Spinnweben-Hauswurz

The cobweb house-leek (Sempervivum arachnoideum) is a distinctive succulent plant in the family Crassulaceae, immediately recognizable by the dense network of white, cobweb-like hairs connecting the tips of its rosette leaves—an adaptation that may protect the plant from intense ultraviolet radiation, desiccation, and grazing at high altitudes. Native to the mountain ranges of Europe, including the Alps, Apennines, Carpathians, and Pyrenees, this species colonizes exposed rocky outcrops, cliff faces, scree slopes, and thin soils from subalpine to alpine elevations, often growing in large mats. The rosettes are small, typically 1–3 centimeters in diameter, composed of densely packed, fleshy leaves colored green with reddish or purplish tips. Like all sempervivums, S. arachnoideum is monocarpic at the rosette level—individual rosettes flower once, producing a stalk bearing clusters of pink to magenta star-shaped flowers before dying, while the plant persists through the continuous production of offsets that form spreading clonal colonies. The specific epithet 'arachnoideum' derives from the Latin for spider, referencing the cobweb-like pubescence. This species has been widely cultivated in rock gardens and alpine gardens worldwide for its ornamental appeal and extreme hardiness. Several varieties and cultivars exist, showing variation in hair density and leaf coloration. Its conservation status has not been formally evaluated by the IUCN, though it remains common throughout its native range.

Echte Hauswurz, Dachwurz

<em>Sempervivum tectorum</em>, commonly known as the common houseleek or hen and chicks, is a succulent perennial in the family Crassulaceae. It is classified as Least Concern on the IUCN Red List, with a broad distribution spanning Asia (including Taiwan), 17 European countries, and North America. The species typically grows on rocky outcrops, old walls, rooftops, and dry, well-drained soils in temperate and montane environments. Adapted to harsh, nutrient-poor conditions, it has been cultivated for centuries as both an ornamental and a plant with traditional medicinal uses. Diet information for this species is not available in current records. Biological traits of this species remain poorly documented in the scientific literature.