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Items 1 – 20 of Dumortiera hirsuta (Sw.) Nees you can join if you are interested in participating in a survey for species like Dumortiera hirsuta (Sw.) Nees. National Distribution. United States. Origin: Unknown/Undetermined. Regularity: Regularly occurring. Currently: Unknown/Undetermined. Confidence: Confident. Download scientific diagram | Dumortiera hirsuta (A) Gametophytic thalli (B) Disk shaped antheridia with bristles (C) archegoniophore with several sporophytes.

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Taylor Nees, Dumortiera hirsuta var. Dumortiera hirsuta is a large thallose liverwort that grows in humid sites, often close to water. Asexual reproduction by specialized propagules lacking. User specific search options User.

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Life cycle The plants form long-lived perennial patches. Links British Bryological Society. Antheridiophores with disk-shaped receptacle, with small ventral scales underneath and bristles on margins and dorsal side, stalk short, without assimilatory strip, with 2 rhizoid furrows; rarely, antheridial branches develop in the female receptacles.

The species is regarded as a priority for conservation in Northern Ireland because the British Isles and especially Ireland are the stronghold of its European range: Encyclopedia of Life EOL. Related observations Show all. The liverwort flora of the British Isles.

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A textual diagnostic description of the species that is not necessarily structured. Does not include altitudinal distribution, which is covered under Habitat.

Branching dichotomous and apical. Species description The large dark green thalli are up to 12cm long and 2cm wide and these may form large mats or become pendent on steep substrata. Why is this dukortiera a priority in Northern Ireland?

What you can do The large thallose liverworts are easier to identify than many bryophytes, since with experience most of them can be determined using a x10 hand lens without needing microscopy. Acknowledgements Contact us Cookie Policy Habitas. Current status It is likely that D. Marchantia irrigua Wilson ex Hook. Weisnerellaceae Dumortiera hirsuta is a large thallose liverwort that grows in humid sites, often close to water. A population may also have suffered from pollution of water supplies by nutrient-enriched run-off from agricultural practice.

Dinas Powys, Vale of Glamorgan: The portal will be unavailable all day on Sunday 23rd Dec for maintenance. Atlas of the bryophytes of Britain and Ireland. Calyptrae 2- to 3-layered after fertilization. Non-fertile Dumortiera is most easily distinguished from Pellia by its larger size, marginal thallus hairs and fine ridges on the thallus.

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Search in all groups Search within this group. Liverworts Hepaticae and Anthocerotae. Negative impacts on humans, communities. Archegonia in stalked, terminal archegoniophores, up to 7 per archegonial cavity. Or, Login with your user account:. Sexes may be on separate plants dioicous or different branches of the same plant autoicous. Elaters hirsua helical bands. Contact the British Bryological Society with hirsutta potential records. If refound, ensure that the population is maintained through appropriate habitat management.

Powered by the open source Biodiversity Informatics Platform. Awaiting further research, all neotropical specimens have been attributed to Dumortiera hirsuta sensu lato, thus including D.

The distribution of bryophytes in Ireland. The species occurs in Western Europe, the Mediterranean region, Macaronesia, and widely in tropical regions of the world. Natural History Natural History.