Rough marsh mallow (Althaea hirsuta)

Rough marsh mallows in flower
loading
Loading more images and videos...

Rough marsh mallow fact file

Rough marsh mallow description

KingdomPlantae
PhylumAnthophyta
ClassMagnoliopsida
OrderMalvales
FamilyMalvaceae
GenusAlthaea

Rough marsh mallow is a hairy, annual or biennial plant with five-lobed, kidney-shaped leaves and the characteristic pink mallow flower. In Britain it mainly behaves as a winter annual.

Size
Height: 20 – 30 cm
Top

Rough marsh mallow biology

The plants typically flower from May to July and set seed in July and August. They avoid drought by growing in winter and flowering in early summer when there is usually enough moisture available. However, a wet summer can change this pattern. The seed can lie dormant for many years and it is possible that disturbance of the soil on former known sites may encourage germination.

Top

Rough marsh mallow range

Widespread in southern Europe, it is known from only five established sites in Britain, the north-westernmost part of its range. These are in Kent, Sussex, Somerset and Oxfordshire. It is only in these sites where hot conditions in summer allow it to survive.

You can view distribution information for this species at the National Biodiversity Network Atlas.
Top

Rough marsh mallow habitat

Rough marsh mallow is one of a group of plants that prefer a 'Mediterranean' type of climate. They like open, shallow soils which are baked dry by hot summer sun. This plant's habit of early flowering and winter growth has limited its range in the UK to sun-warmed slopes. Ideally, rabbit activity should provide suitable conditions by limiting competition and producing scrapes and small scale disturbance, and the site should be dried out over the summer months.

Top

Rough marsh mallow status

Classified as Endangered in the UK, and listed on Schedule 8 of the Wildlife and Countryside Act 1981.

Top

Rough marsh mallow threats

The rough marsh mallow has declined largely through habitat loss. Much suitable habitat has been lost to agricultural improvement or succession to scrub as a result of neglect or lack of rabbit grazing. When rabbit populations are reduced by periodic outbreaks of myxomatosis, or excluded by the erection of a rabbit-proof fence, the mallow is likely to disappear from a site.

Top

Rough marsh mallow conservation

The rough marsh mallow is listed on Schedule 8 of the Wildlife and Countryside Act 1981, which means it is a protected species within the UK. Because of the rarity of the rough marsh mallow, it was included in English Nature's Species Recovery Programme. In partnership with Plantlife's 'Back from the Brink' project, this has sought to reverse the decline of the plant.

The work of recovery has hinged on long-term monitoring and management as well as restoring suitable habitat, for example, by scrub control. Part of the work has also focussed on involving the local community and landowners in conservation work for this species. One method used has been the rotovation of plots where the mallow has been known to grow in the past, in order to provide the right conditions to allow germination of any remaining seed. Rough marsh mallow sometimes occurs in company with other rare species that need similar conditions such as nit grass and ground pine.

There may be further information about this species available via the National Biodiversity Network Atlas.
Top

Find out more

For further information on the conservation of Britain’s plants see:

Top

Authentication

This information is awaiting authentication by a species expert, and will be updated as soon as possible. If you are able to help please contact: arkive@wildscreen.org.uk
Top

Glossary

Annual
Lives or grows for just one year.
Biennial
A plant that lives for two years and typically flowers only in the second year.
Top

References

X
Close

Image credit

Rough marsh mallows in flower  
Rough marsh mallows in flower

© Bob Gibbons / gettyimages.com

Getty Images
101 Bayham Street
London
NW1 0AG
United Kingdom
Tel: +44 (0) 800 376 7981
sales@gettyimages.com
http://www.gettyimages.com

X
Close

Link to this photo

Arkive species - Rough marsh mallow (Althaea hirsuta) Embed this Arkive thumbnail link ("portlet") by copying and pasting the code below.

Terms of Use - The displayed portlet may be used as a link from your website to Arkive's online content for private, scientific, conservation or educational purposes only. It may NOT be used within Apps.

Read more about

X
Close

MyARKive

MyARKive offers the scrapbook feature to signed-up members, allowing you to organize your favourite Arkive images and videos and share them with friends.

Play the Team WILD game:

Team WILD, an elite squadron of science superheroes, needs your help! Your mission: protect and conserve the planet’s species and habitats from destruction.

Conservation in Action

Which species are on the road to recovery? Find out now »

This species is featured in:

Help us share the wonders of the natural world. Donate today!

Blog

Back To Top