English: Blue dew-moss.
synonym: Trichostomum glaucescens.
Region: Greenland; Canada, USA; Alaska, Eurasia; east Asia; south Africa; Pacific Islands, Hawaii, New Zealand.
Habitat: on steep banks, particularly those protected by overhangs, frequent on roadsides, soil in sheltered rock crevices; moderate to high elevations.
BotanyLeaves: characteristic whitish to bluish coloration; glaucous coloration, granular or thread-like surface materialdyue to a diterpene; 1 to 2.5 to 3.5 mm; proximal leaves small; distal and perichaetial leaves gradually acuminate, ± subulate from a lanceolate base; costa with a single row of guide cells, and both adaxial and abaxial stereid bands, or adaxial stereid band sometimes weak or rarely absent; lamina cells often irregularly 2-stratose towards the apex and occasionally elsewhere.
Seta: to 15 mm.
Capsule: with operculum to 1 mm; mature early summer-late fall.
Spores: 15 to 22 µm, greenish to yellow-brown.