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DUMORTIERA HIRSUTA PDF

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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Species Description – Thallus mm wide, flat, deep green, not tinged with purple. The distribution of bryophytes in Ireland. 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.

Click on map to open large map in new window. Current status It is likely that D.

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Atlas of the bryophytes of Britain and Ireland. Why is this species a priority in Northern Ireland? Life cycle The plants form long-lived perennial patches.

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Taylor, Hygrophila nepalensis Taylor, Dumortiera nepalensis T. Remember me Forgot password? 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.

Bristles present on ventral thallus side and on gametangiophores. Important genetic differentiation has been found within the haploid cytotype, but the large distribution of the species and its rarity in Europe and the Mediterranean precluded a thorough investigation of its genetic structure. It is rare and declining.

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Thallus dark greenish, in large patches of overlapping individuals, cm x User specific search options User. Also includes dumortiers referring to territorial extension of the individual or group in terms of its activities feeding, mating, etc.

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.

Ventral scales in 2 rows, small, hyaline, without oil cells, papillae, or appendage. Best supported on Google Chrome, Firefox 3. Technology partner Strand Life Sciences.

Dumortiera hirsuta : Dumortier’s Liverwort | NBN Atlas

Awaiting further research, all neotropical specimens have been attributed to Dumortiera hirsuta sensu lato, thus including D. Dumortiera hirsuta is a large thallose liverwort that grows in dumottiera sites, often close to water. This species, treated as a subspecies by Schuster bis characterized by crowded, papilliform cells on the dorsal surface girsuta the thallus that correspond to remnants of air chamber partitions. Dinas Powys, Vale of Glamorgan: Send a request for permission.

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Sporophytes or more per involucre with slightly elongating seta. Links British Bryological Society. Checklists specific search options Observed during.

Sporophytes only occur occasionally in the British Isles, ripening from May to September, with up to nine capsules on each receptacle. Liverworts Hepaticae and Anthocerotae. Hirsuya population may also have suffered from pollution of water supplies by nutrient-enriched run-off from agricultural practice.

Involucres tubular, opening at top by hiesuta ventral-terminal slit, with bristles. British Red Data Books: In shady wet areas of forests, on rocks near water courses, on submerged rocks, on exposed roots of higher plants, etc.