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.
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Non-fertile Dumortiera is most easily distinguished from Pellia by its larger size, marginal thallus hairs and fine ridges on the thallus.
Encyclopedia of Life EOL. It is rare and declining. Search in all groups Search within this group. Awaiting further research, all neotropical specimens have been attributed to Dumortiera hirsuta sensu lato, thus including D.
Natural History Natural History. User Group specific search options Title. Dumortiera hirsuta — Dumortier’s dummortier. The floor of the air chambers becomes the exposed surface of the mature thallus. Species Description – Thallus mm wide, flat, deep green, not tinged with purple.
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.
Similar species Although the occurrence of receptacles shows that Dumortiera is a member of the Marchantiales, it differs from most other large thallose liverworts of this advanced order by lacking dumortiet air chambers and pores on the upper surface of the thallus. Taylor, Hygrophila nepalensis Taylor, Dumortiera nepalensis T. 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.
Atlas of the bryophytes of Britain and Ireland. Dumortiera hirsuta is easily distinguished from most neotropical Marchantiales by its large, dark-green thallus without epidermal pores and with “bristles” on the ventral side.
Dumortiera hirsuta (Sw.) Nees — The Plant List
Rajesh and Madhusoodanan P. Three cytotypes are known, but chromosome counts are not available for neotropical material. Dinas Powys, Vale of Glamorgan: Send a request fumortier permission. Best supported on Google Chrome, Firefox 3. If refound, ensure that the population is maintained through appropriate habitat management. British Red Data Books: How to see this species The only locality known in Northern Ireland is in Glenarm Glen, where it was found in on dripping rock by the river in a wooded ravine.
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General description of the sites where the species is found ecosystem, forest, environment or microhabitat. Uses and Management Uses and Management. Air chambers absent, or in 1 layer and vestigial, with chlorophyllose filaments not roofed by epidermis. Life cycle The plants form long-lived perennial patches. Bryophytes of Wayanad in Western Ghats. Links British Bryological Society. Elaters with helical bands. Or, Login with your user account:.
In shady wet areas of forests, on rocks near water courses, on submerged rocks, on exposed roots of higher plants, etc. Dumortiera hirsuta is a large thallose hiruta that grows in humid sites, often close to water.
The liverwort hirsutw of the British Isles.
The portal will be unavailable all day on Sunday 23rd Dec for maintenance. Bristles present on ventral thallus side and on gametangiophores. Archegonia in stalked, terminal archegoniophores, up to 7 per archegonial cavity.
Sporophytes only occur occasionally in the British Isles, ripening from May to September, with up to nine capsules on each receptacle. Related observations Show all.
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The Glenarm locality is one of the northernmost known for the species, which reaches the northern limit of its world range in south-western Scotland.
The thalli are dull not glossy when dry, almost flat above, with a pattern of fine ridges. Dumortiera hirsuta probably is a complex species, comprising several genetically distinct dumrtier.
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. Epidermal pores absent, or at thallus apex only, bounded by a single ring of 4 cells, radial walls thin.
Archegoniophore stalk long, without assimilatory yirsuta, 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.
Does not include altitudinal distribution, which is covered under Habitat. Weisnerellaceae Dumortiera hirsuta is a large thallose liverwort that grows in humid sites, often close to water. Taylor Nees, Dumortiera hirsuta var. Sexes may be on separate plants dioicous or different branches of the same plant autoicous.