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. Taylor, Hygrophila nepalensis Taylor, Dumortiera nepalensis () Nees, Dumortiera hirsuta var. trichopus Spruce, Marchantia hirsuta Sw. Download scientific diagram | Dumortiera hirsuta (A) Gametophytic thalli (B) Disk shaped antheridia with bristles (C) archegoniophore with several sporophytes.
|Published (Last):||12 September 2004|
|PDF File Size:||20.51 Mb|
|ePub File Size:||9.88 Mb|
|Price:||Free* [*Free Regsitration Required]|
Checklists specific search options Observed during.
Branching dichotomous and apical. Dumortiera hirsuta — Dumortier’s liverwort. Why is this species a priority in Northern Ireland? Weisnerellaceae Dumortiera hirsuta is a large thallose liverwort that grows in humid sites, often close to water. Send a request for permission. Also includes information referring to territorial extension of the dumogtier or group in terms of its activities feeding, mating, etc.
Natural History Natural History. Links British Bryological Society.
India Biodiversity Portal
Overview Overview Diagnostic Diagnostic Keys. Occurrence Occurrence Occurrence Records. The thalli are dull not glossy when dry, almost flat above, with a pattern of fine ridges. Threats to the species are poorly understood, but elsewhere it is at risk from tree-felling activities that reduce humidity and shade and from water pollution.
Species Description – Thallus mm wide, flat, deep green, not tinged with purple. Epidermal pores absent, or at thallus apex only, bounded by a single ring of 4 cells, radial walls thin. 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.
A textual diagnostic description of the species that is not necessarily structured. However, in sterile condition the species may be difficult to distinguish from Monoclea gottschei see under the latter species. Does not include altitudinal distribution, which is covered under Habitat. Taylor Nees, Dumortiera hirsuta var. Marchantia irrigua Wilson ex Hook. Current status It is likely that D. Sporophytes or more per involucre with slightly elongating seta.
Three cytotypes are known, but chromosome counts are not available for neotropical material.
British Red Data Books: User Group specific search options Title. Non-fertile Dumortiera is most easily distinguished from Pellia by its larger size, marginal thallus hairs and fine ridges on the thallus. If refound, ensure that the population is maintained through appropriate habitat management.
General description of the sites where the species is found ecosystem, forest, environment or microhabitat. Relevant access permissions sumortier always be sought prior to visiting any sites. User specific search options User. The species is regarded as a priority for conservation in Northern Ireland because the British Isles and especially Higsuta are the stronghold of its European range: This species, treated as a subspecies by Schuster bis characterized by crowded, papilliform cells on the dorsal surface of the thallus that correspond to remnants of air chamber partitions.
Ventral scales in 2 rows, small, hyaline, without oil cells, papillae, or appendage. Reproductive structures receptacles occur near the thallus tip. Sporophytes only occur occasionally in the British Isles, ripening from May to September, with up to nine capsules on each receptacle. The distribution of bryophytes in Ireland. Observation specific search options Observed during. Calyptrae 2- to 3-layered after hirsutx.
Technology partner Strand Life Sciences. Archegoniophore stalk long, without assimilatory strip, with 2 rhizoid furrows and small scales at top; receptacle shallowly 6- to lobed, without or with few epidermal pores, sometimes with open cavities bounded by a ring of cells, with bristles on margins and dorsal side. Dumortiera hirsuta nirsuta is a complex species, comprising several genetically distinct siblings.
Bryophytes Liverworts: Dumortiera hirsuta
In shady wet areas of forests, on rocks near water courses, on submerged rocks, on exposed roots of higher plants, etc. Powered by the open source Biodiversity Informatics Platform. Rajesh and Madhusoodanan P. Atlas of the bryophytes of Britain and Ireland. The Glenarm locality hirsutx one of the northernmost known for the species, which reaches the northern limit of its world range in south-western Scotland.
Dumortiera hirsuta (Sw.) Nees — The Plant List
There are no conspicuous air chambers or pores on the upperside of the thallus but its margins have a fringe of tiny hairs. The current map showing distribution of species is only indicative.
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. A population may also have suffered from pollution of water supplies by nutrient-enriched run-off from agricultural practice. Message The user has shared this species from India Biodiversity Portal with you. Dumortiera hirsuta is a large thallose liverwort that grows in humid sites, often close to water.