20 Sempervivum arachnoideum subsp. tomentosum
Sempervivum arachnoideum subsp. tomentosum is a mat-forming, evergreen perennial with rosettes (up to 1.6 inches (4 cm) in diameter) of fleshy, obovate, mid-green to red leaves densely covered in white, cobweb-like hairs. The star-shaped pink flowers, up to 0.6 inch (1.5 cm) in diameter are borne in flat cymes in stems up to 6 inches (15 cm) tall.