Cerastium alpinum subsp. lanatum
Plants perennial, tufted or mat-forming, taprooted or rhizomatous. Flowering shoots erect or decumbent, 6–10 cm. Leaves: flowering shoots with blade lance-elliptic to ovate or obovate, broad, apex obtuse, with tuft of silvery, ± tangled, long, woolly hairs, pubescent; those at base and on sterile shoots often marcescent, blade obovate, apex obtuse, densely pubescent. Inflorescences usually 1-flowered, sometimes with simple cyme. Pedicels straight, usually short, 5–20 mm. Petals 2 times as long as sepals. 2n = 72, 104 ± 2, 108.
Phenology: Flowering spring.
Habitat: Northern arctic tundra
Elevation: 0-400 m
Greenland, Nfld. and Labr., N.W.T., Nunavut, Ont., Que., Europe (Iceland, Russia, Scandinavia, mountains).