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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Weisnerellaceae Dumortiera hirsuta is a large thallose liverwort that grows in humid sites, often close to water. 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.
Awaiting further research, all neotropical specimens have been attributed to Dumortiera hirsuta dumoortiera lato, thus including D.
Dumortiera hirsuta (Sw.) Nees | Species | India Biodiversity Portal
Air chambers absent, or in 1 layer and vestigial, with chlorophyllose filaments not roofed by epidermis. Dumortiera hirsuta — Dumortier’s liverwort. Taylor, Hygrophila nepalensis Taylor, Dumortiera nepalensis T. Atlas of the bryophytes of Britain and Ireland. Basal tissue with few oil cells, without mucilage cavities. What you can do The large thallose liverworts are easier to identify than many bryophytes, since with experience most of them can hirauta determined using a x10 hand lens without needing microscopy.
Document specific search options Title. Involucres tubular, opening at top by a ventral-terminal slit, with bristles.
The portal will be unavailable all day on Sunday 23rd Dec for maintenance. The liverwort flora of the British Isles.
Technology partner Strand Life Sciences. Relevant access permissions should always be sought prior to visiting any sites. Reproductive structures receptacles occur near the thallus tip. Archegonia in stalked, terminal archegoniophores, up to 7 per archegonial cavity.
Sexes may be on separate plants dioicous or different branches of the same plant autoicous. A textual diagnostic description of the species that is not necessarily structured.
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. Checklists specific search options Observed during. Marchantia irrigua Wilson ex Hook. Current status It is likely that D. 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 obvious air chambers and pores on the upper surface of the thallus.
Does not include altitudinal distribution, which is covered under Habitat. Why is this species a priority in Northern Ireland? British Red Data Books: Observation specific search options Observed during. General description of the sites where the species is found ecosystem, forest, environment or microhabitat.
Its name is derived from the presence of minute hairs at the thallus margins.
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It is easily distinguished, therefore, from the commoner large thallose liverworts of the genera ConocephalumLunularia and Marchantiabut superficially similar to the more distantly related Pellia species.
Enumerates geographic entities where the taxon lives. 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.
Also includes information referring to territorial extension of the individual or group in terms of its activities feeding, mating, etc. Thallus dark greenish, in large patches of overlapping individuals, cm x Species Description – Thallus mm wide, flat, deep green, not tinged with purple.
User Group specific search options Title. Related observations Show all. Send a request for permission. Encyclopedia of Life EOL.
The species is very common and has been collected in the Neotropics on moist soil, dripping or mossy rocks, usually in shaded places, on stream-sides, near waterfalls, in caves, in disturbed and undisturbed montane rain forests, from to m, more commonly below m.
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. Search in all groups Search within this group. Contact the British Bryological Society with any potential records. Branching dichotomous and apical. Important genetic differentiation has been found within the haploid cytotype, but the large distribution of the species and its rarity in Europe and hiirsuta Mediterranean precluded a thorough investigation of its genetic structure.
Sporophytes only occur occasionally in the British Isles, girsuta from May to September, with up to nine capsules on each receptacle.
Bryophytes of Wayanad in Western Ghats.