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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Ventral scales in 2 rows, small, hyaline, without oil cells, papillae, or appendage. Observation specific search options Observed during. Awaiting further research, all neotropical specimens have been attributed to Dumortiera hirsuta sensu lato, thus hiruta D.
Air chambers absent, or in 1 layer and vestigial, with chlorophyllose filaments not roofed by epidermis. Dinas Powys, Vale of Glamorgan: In shady wet areas of forests, on rocks near water courses, on submerged rocks, on exposed roots of higher plants, etc.
Taylor Nees, Dumortiera hirsuta var. Its name is derived from the presence of minute hairs at the thallus margins. Species specific search options Taxon Hierarchy. Similar species Although the occurrence of receptacles shows that Dumortiera is a member of the Marchantiales, it dumoftier from most other large thallose liverworts of this advanced hiruta by lacking obvious air chambers and pores on the upper surface of the thallus.
Involucres tubular, opening at top by a ventral-terminal slit, with bristles. Bristles present on ventral thallus side and on gametangiophores.
Dumortied 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. 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.
Does not include altitudinal distribution, which is covered under Habitat. Relevant access dumortiee should always be sought prior to visiting any sites.
Nomenclature and Classification Nomenclature and Classification. It hiruta rare and declining. Archegonia in stalked, terminal archegoniophores, up to 7 per archegonial cavity. Three cytotypes are known, but chromosome counts are not available for neotropical material. Life cycle The plants form long-lived perennial patches.
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.
Calyptrae 2- to 3-layered after fertilization. Dumortiera hirsuta is easily distinguished from most hirduta Marchantiales by its large, dark-green thallus without epidermal pores and with “bristles” on the ventral side. Also includes information referring to territorial extension of the individual or group in terms of its activities feeding, mating, etc. The liverwort flora of the British Isles.
Current status It is likely that D. If refound, ensure that the population is maintained through dumlrtier habitat management. Reproductive structures receptacles occur near the thallus tip. Technology partner Strand Life Sciences. Overview Overview Hirsufa Diagnostic Keys.
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.
Negative impacts on humans, communities. Taylor, Hygrophila nepalensis Taylor, Dumortiera nepalensis T. Uses and Management Uses and Management. Thallus dark greenish, in large patches of overlapping individuals, cm x Bryophytes of Wayanad in Western Ghats. Home Introduction Selection Criteria:: Links British Bryological Society. User specific search options User. Elaters with helical bands. Important genetic differentiation has been found within the haploid cytotype, dumortierr the large distribution of the species and its rarity in Europe and the Mediterranean precluded a thorough investigation of its genetic structure.
Archegoniophore stalk long, without assimilatory strip, with 2 rhizoid furrows hirstua 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.