Blepharostoma trichophyllum subsp. brevirete, (Bryhn & Kaal.) R. M. Schust.

* B. trichophyllum subsp. brevirete (Bryhn & Kaal.) R.M. Schust. View in CoL

[ B. trichophyllum var. brevirete Bryhn & Kaal. ]

– 2, 4, 6, 8, 9, 12, 17 (11: 630–926 m alt.), fr.: on carbonate cliffs in tundras, larch low growth open forests, in alder thickets, on humus and carbonate fine earth on ledges and in niches under rocks on cliffs and in rock fields, on sides of brooks near carbonate rocks [121312]. The species occurs both in pure mats and mixed with Tritomaria scitula , Distichium capillaceum , Mesoptychia heterocolpos , M. gillmanii , M. collaris , Odontoschisma macounii , Saccobasis polita , Preissia quadrata , Clevea hyalina , Cyrtomnium hymenophylloides, Mnium thomsonii, Pohlia cruda, Platydictya jungermannioides. This is the first record of the subspecies for the eastern side of the Urals. The subspecies brevirete has been reported earlier for the western side of the Urals, particularly the Vishera State Nature Reserve (Konstantinova & Bezgodov, 2006). As opposed to the typical subspecies B. trichophyllum subsp. brevirete is restricted to calcareous areas and high latitudes and altitudes. It is much more common than subsp. trichophyllum in the high Arctic and at high altitudes in mountains.