Bicoloured Bryum - Bryum dichotomum

Alternative names
Bryum bicolor
Description

B. dichotomum is usually less than 1 cm tall, growing in compact tufts, or having scattered shoots, with rather concave leaves which are short (2 to 2.5 mm) in relation to their width when compared with many other Bryum species. 1 to 5 bulbils (about 1 mm long) frequently occur in many of the leaf axils. Pendulous, egg-shaped capsules are often produced in autumn and winter. They are rather rounded and short, varying in length between 1 and 2.5 mm, and pass abruptly into a seta which is only 8 to 15 mm long.

Identification difficulty
Recording advice

A good photo is needed showing sufficient detail, including the bulbils, to confirm the ID.

Habitat

A moss of disturbed soil, especially base-rich clays, for example compacted soil on and beside paths, roads and water courses, in gardens, fields, on waste ground, in quarries and sand dunes. B. dichotomum also grows on roofs, and on stone, for example on walls, cliffs and rocks by water courses.

When to see it

All year round.

UK Status

Widespread and frequent throughout Britain.

VC55 Status

Fairly frequent in Leicestershire and Rutland.

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020

UK Map

Species profile

Common names
Dune Thread-moss, Dune threadmoss, Dune Thread-moss
Species group:
Mosses & Liverworts
Kingdom:
Plantae
Order:
Bryales
Family:
Bryaceae
Records on NatureSpot:
12
First record:
07/04/1993 (Dennis Ballard)
Last record:
15/03/2023 (Bell, Melinda)

Total records by month

% of records within its species group

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