Function and evolution of plant b chromosomes authorstream presentation. Chemical investigation of the ethanolic extracts of the whole plant of ophioglossum pedunculosum afforded seven new homoflavonoid glucosides, pedunculosumosides a. Ophioglossum fertile segment undivided bears two rows of sunken eusporangia. Division pterophyta division anthophyta ferns gymnosperms angiosperms higher vascular plants all have developed the megaphyll large photosynthetic leaf or frond whose vascular system is a system of vein. Botswana, cape provinces eastern cape, northern cape, western cape regional.
We do not intend the plant list to be complete for names of infraspecific rank. This page was last edited on 10 january 2018, at 20. Ophioglossum reticulatum is a perennial fern producing sterile fronds 5 8cm long by 4 5cm wide with fertile fronds up to 20cm long200. However, ophioglossum gramineum willd, ophioglossum nudicaule l. The atlas of florida plants provides a source of information for the distribution of plants within the state and taxonomic information. Distribution of b chromosomes 72 flowering plants 1015% 12 conifers the remaining 60 angiosperms jones,1995. Follow these instructions to set the print quality of the pdf. Seedless vascular plants christian brothers university. In this article we will discuss about the structure and reproduction in ophioglossum.
S1 line drawings of ophioglossum vulgatum sporophyte and the orchid aplectrum hyemale. Ophioglossaceae, the adderstongue family, is a small family of ferns. Ophioglossum vulgatum grows from a rhizome base to 1020 cm tall rarely to 30 cm. Gann, institute for regional conservation, 1997 personal communication or possibly native lucansky, university of florida, 1997 personal communica. Ophioglossum, the adderstongue ferns, is a genus of about 2530 species of ferns in the family ophioglossaceae, of the order ophioglossales. Ophioglossum the type genus of the fern family ophioglossaceae genus ophioglossum family ophioglossaceae, ophioglossaceae a. Ophioglossum pedunculosum in global plants on jstor. The fern life cycle requires two generations of plants to complete itself.
Gametophytes of each are subterranean, tuberous, elongate structures with numerous rhizoids also, endophytic fungi which resembles gametophytes of psilotales ophioglossum reticulatum has highest chromosome number known in any living organism. Some pteridophytes are aquatic marselia, azolla and some are epiphytes ophioglossum pendulum. Ophioglossum occurs mostly in disturbed, open, grassy habitats. Files are available under licenses specified on their description page. Ophioglossum definition of ophioglossum by the free. Largest chromosome number of ophioglossum biomysteries. Ophioglossum definition is the type genus of the family ophioglossaceae comprising the adderstongues and having a solitary simple frond with netted venation and a terminal spike formed of two rows of coalescent sporangia. Homoflavonoid glucosides from ophioglossum pedunculosum. The website also provides access to a database and images of herbarium specimens found at the university of south florida and other herbaria. The ophioglossidae are one of the groups traditionally known as eusporangiate ferns. Stem anatomy and phyllotaxis in ophioglossum petiolatum emily webb1 besides ophioglossum petiolatum hooker, subg.
Population cytogenetic studies have been carried out chiefly from the localities where more than one species of ophiglossum grow. In powerpoint, select the slide that you want to add the content to, and then, on the insert tab, in the images group, click screenshot. The genus ophioglossum from western ghats of india 25 broad, touft, elliptical oblong, glabrous, narrowed at base and apex, wider medially, apex acute. Ophioglossum adderstongue 49 images at phytoimages. Ophioglossum synonyms, ophioglossum pronunciation, ophioglossum translation, english dictionary definition of ophioglossum. All structured data from the file and property namespaces is available under the creative commons cc0 license. The chromosome is one of the threadlike packages of genes and other dna in the nucleus of cells. One generation is diploid, meaning it carries two identical sets of chromosomes in each cell or the full genetic complement like a human cell. The plant list includes 1 scientific plant names of species rank for the genus ophioglossum. Save powerpoint presentations as pdf files office support.
S3 schematic diagram of meshcovered core not drawn to scale. In the pteridophyte phylogeny group classification of 2016 ppg i, it is the only family in the order ophioglossales, which together with the psilotales is placed in the subclass ophioglossidae. The new york flora atlas is a source of information for the distribution of plants within the state, as well as information on plant habitats, associated ecological communities, and taxonomy. Comprehensive report species ophioglossum pusillum.
Function and evolution of plant b chromosomes authorstream. Ophioglossum pendulum synonyms, ophioglossum pendulum pronunciation, ophioglossum pendulum translation, english dictionary definition of ophioglossum pendulum. The simplicity in ophioglossum, according to bower is a derived condition. This page was last edited on 22 january 2015, at 19. Pteridophyte reproduction christian brothers university. Among the three genera of the family, ophioglossum seems to be the most primitive having resemblance to the ancestors of the ferns. Specimens described as ophioglossum pedunculosum desvaux in frps 2. Under print quality paper pdf, set the desired quality to an option of your choice.
Interesting ferns which grow in the root mass of other large, epiphytic ferns, such as asplenium and platycerium. Ophioglossum definition of ophioglossum by merriamwebster. For information to be useful to the decision maker, it must have certain characteristics and meet certain criteria. Pdf converter is a online webbased document to pdf converter software.
Chromosome evolution in the genus ophioglossum l article in botanical journal of the linnean society 1023. Landry 1984 have greatly extended our knowledge of adderstongue distributions in. Ophioglossum pendulum epiphytic fern with straplike usually twisted fronds of tropical asia and polynesia and america ribbon fern adders tongue. Ophioglossum includes approximately 20 other species. The name ophioglossum comes from the greek, and means snaketongue.
All are characterized by a radially erect, underground stem which bears a simple, oval or lanceolate leaf blade at the base of. The sporophyte is differentiated into a subterranean rhizome with roots and spirally arranged leaves bearing sporangiferous spike fig. Verified by john eric burrows, ophioglossum polyphyllum a. The name adders toungue is quite significant due to the spore bearing stalk resembles like that of snakes tongue.
It is often overlooked because of superficial resemblance to seedlings of monocotyledonous plants. Some of the characteristics of good information are discussed as follows. Meenal pandey fourth year nehru homoeopathic medical college, new delhi 2. Pedunculosumosides a and c exhibit modest activity of blocking hbsag secretion with ic50 values of 238.
Morphology and anatomy of ophioglossum reticulatum. Depending on your window size, the screenshot button may appear different. Braun ex seubert have been recorded for the first time which is a new addition to the pteridophytic flora of pbr. Ophioglossum pusillum is known from nova scotia west to north dakota, south to virginia, north carolina possibly, indiana, and nebraska. Ophioglossum a genus of ferns of the family ophioglossaceae, including mostly low herbs. Ophioglossum article about ophioglossum by the free. Some species reproduce vegetatively by means of adventitious buds formed on the. Ophioglossum n a taxonomic genus within the family ophioglossaceae adders tongue, the species being distributed widely in the subtropics and tropics. Ophioglossum, which is known as adderstongue and is under the family of ophioglossum, found variedly in tropical and subtropical distribution.
It consists of a twopart frond, separated into a rounded diamondshaped sheath and narrow sporebearing spike. The plant list includes a further 22 scientific plant names of infraspecific rank for the genus ophioglossum. Convert and create pdf from various types of files like word doc, excel xls, powerpoint ppt. Since information is already in a summarized form, it must be understood by the receiver so that he will interpret it correctly. Repeated meiotic studies have also been carried out from populations of single or isolated species of ophioglossum and monotypic helminthostachys. S2 timeline of longterm ophioglossum vulgatum turf experiments.
In addition, users can learn about the location of vouchered specimens and see images to get a better visual for each plant. Important diagnostic features of the species are the presence of a cauline stele in the basal part of the stem, while in the upper part it is impossible to distinguish the cauline from the foliar strands. Ophioglossum adderstongue ophioglossaceae 49 images at phytoimages. Modified 17 199 embryophytes bryophytes rhynia fossil lycopodiophyta.
Common names natternzunge in german adderstongue in english adderstongue in english adderstongue in english ormtungor in swedish adderstongues in english ormetungeslekta in nynorsk, norwegian. Only a few tropical species are epiphytic, with the leaves reaching 2. Stem anatomy and phyllotaxis in ophioglossum petiolatum. Bower 1896 disagrees with this and holds that ophioglossum represents an advancement over the other two genera. Insert pdf file content into a powerpoint presentation. Your pdf file should be the first thumbnail image in the available windows list.