Marble Screw-moss - Syntrichia papillosa

    Description

    Marble Screw-moss grows in small (2 to10 mm tall), dark green patches. The leaves spread when moist, and become incurved rather than twisted when dry. They are about 2.5 mm long, and broadly oval with an excurrent nerve. The margins are incurved and the nerve in the upper part of the leaf is covered with small, round gemmae, giving a very characteristic appearance. Capsules are unknown in Britain.

    Identification difficulty
    Habitat

    This distinctive species usually grows on mature trees; more rarely on walls, stones or tarmac. 

    When to see it

    All year round.

    UK Status

    It is infrequent throughout Britain and Ireland, but may be spreading. It is particularly associated with urban street trees and is often abundant on tree trunks in western towns.

    VC55 Status

    Status in Leicestershire and Rutland not known.

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    Leicestershire & Rutland Map

    MAP KEY:

    Yellow squares = NBN records (all known data)
    Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

    UK Map