?Ophioglossophyta
Botrychium lunaria
Scientific classification
Kingdom: Plantae Division: Ophioglossophyta Class: Ophioglossopsida Order: Ophioglossales
Families and Genera
Family Ophioglossaceae Ophioglossum Cheiroglossa Family Botrychiaceae Botrychium Botrypus Sceptridium Family Helminthostachiaceae Helminthostachys zeylanica

The Ophioglossophyta (lit. 'snake-tongue-plant') are a small group of pteridophyte plants. Traditionally they are included in the division Pteridophyta, the ferns, originally as a family and later as the order Ophioglossales. However, it is now recognized that this group is wholly distinct from the ferns and apparently from the other extant groups of plants. Thus they may be given a separate division, called the Ophioglossophyta. One scheme groups them with the horsetails and whisk ferns in the division Archeophyta. Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Divisions Green algae land plants (embryophytes) non-vascular embryophytes Hepatophyta - liverworts Anthocerophyta - hornworts Bryophyta - mosses vascular plants (tracheophytes) seedless vascular plants Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongue ferns seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta... Species Ophioglossum azoricum Ophioglossum engelmanii Ophioglossum lusitanicum Ophioglossum pycnosticum Ophioglossum vulgatum Adders-tongues are plants of the genus Ophioglossum, which means snake-tongue. Ophioglossum is in the family Ophioglossaceae, in the order Ophioglossales, a small group of vascular plants. ... Species Ophioglossum azoricum Ophioglossum engelmanii Ophioglossum lusitanicum Ophioglossum pycnosticum Ophioglossum vulgatum Adders-tongues are plants of the genus Ophioglossum, which means snake-tongue. Ophioglossum is in the family Ophioglossaceae, in the order Ophioglossales, a small group of vascular plants. ... Binomial name Cheiroglossa palmata (L.) K. Presl. ... The Botrychiaceae (moonwort family) is a small family of three genera in the order Ophioglossophyta. ... Species Botrychium boreale Botrychium lanceolatum Botrychium lunaria Botrychium matricariifolium Botrychium simplex Moonwort is also a fernlike plant known as honesty. ... Species Botrypus virginianum Grape-ferns are seedless vascular plants of the genus Botrypus, closely allied to (and previously often included in) the genus Botrychium (moonworts). ... Species Sceptridium dissectum Sceptridium multifidum Sceptridium rugulosum Sceptridium is a genus of seedless vascular plants, closely allied to (and previously often included in) the genus Botrychium (moonworts) and also closely related to the genus Botrypus (grape-ferns). ... Binomial name Helminthostachys zeylanica (L.) Hook. ... Classes Marattiopsida Osmundopsida Gleicheniopsida Pteridopsida A fern, or pteridophyte, is any one of a group of some twenty thousand species of plants classified in the Division Pteridophyta, formerly known as Filicophyta. ... Divisions Green algae Chlorophyta Charophyta Land plants (embryophytes) Non-vascular plants (bryophytes) Marchantiophyta - liverworts Anthocerotophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) †Rhyniophyta - rhyniophytes †Zosterophyllophyta - zosterophylls Lycopodiophyta - clubmosses †Trimerophytophyta - trimerophytes Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta... Classes Marattiopsida Osmundopsida Gleicheniopsida Pteridopsida A fern is any one of a group of about 20,000 species of plants classified in the phylum or division Pteridophyta, also known as Filicophyta. ... Species The horsetails are vascular plants, comprising 15 species of plants in the genus Equisetum. ... Species Psilotum nudum (L.) Beauvois - Whisk Fern Psilotum complanatum Sw. ...

The two principal families of ophioglossoids are the adders'-tongues, Ophioglossaceae, and the moonworts and grape-ferns, Botrychiaceae. Many workers still place the moonworts in the Ophioglossaceae, along with the distinct species Helminthostachys zeylanica. Other times, this species is given its own family Helminthostachiaceae. Species Ophioglossum azoricum Ophioglossum engelmanii Ophioglossum lusitanicum Ophioglossum pycnosticum Ophioglossum vulgatum Adders-tongues are plants of the genus Ophioglossum, which means snake-tongue. Ophioglossum is in the family Ophioglossaceae, in the order Ophioglossales, a small group of vascular plants. ... Species Ophioglossum azoricum Ophioglossum engelmanii Ophioglossum lusitanicum Ophioglossum pycnosticum Ophioglossum vulgatum Adders-tongues are plants of the genus Ophioglossum, which means snake-tongue. Ophioglossum is in the family Ophioglossaceae, in the order Ophioglossales, a small group of vascular plants. ... Species Botrychium boreale Botrychium lanceolatum Botrychium lunaria Botrychium matricariifolium Botrychium simplex Moonwort is also a fernlike plant known as honesty. ... The Botrychiaceae (moonwort family) is a small family of three genera in the order Ophioglossophyta. ... Binomial name Helminthostachys zeylanica (L.) Hook. ...

All the ophioglossoids have short-lived spores formed in sporangia lacking an annulus, and borne on a stalk that splits from the leaf blade; and fleshy roots. Many species only send up one frond or leaf-blade per year. A few species send up the fertile spikes only, without any conventional leaf-blade. The gametophytes are subterranean. The spores will not germinate if exposed to sunlight, and the gametophyte can live some two decades without forming a sporophyte. Spores produced in a sporic life cycle. ... A sporangium (pl. ... ROOT is an object-oriented software package developed by CERN. It was originally designed for particle physics data analysis and contains several features specific to this field, but it is also commonly used in other applications such as astronomy and data mining. ... A fern with simple (lobed or pinnatifid) blades, the dissection of each blade not quite reaching to the rachis. ... The leaves of a Beech tree A leaf with laminar structure and pinnate venation In botany, a leaf is an above-ground plant organ specialized for photosynthesis. ... // Overview A gametophyte is the haploidor possibly diploid structure or phase of life of a sexually-reproducing plant. ... In plants that undergo alternation of generations, a sporophyte is the structure, or phase of life, that contains a total complement of chromosomes: The sporophyte produces spores, in a process called meiosis. ...

The genus Ophioglossum has the highest chromosome counts of any known plant. Species Ophioglossum azoricum Ophioglossum engelmanii Ophioglossum lusitanicum Ophioglossum pycnosticum Ophioglossum vulgatum Adders-tongues are plants of the genus Ophioglossum, which means snake-tongue. Ophioglossum is in the family Ophioglossaceae, in the order Ophioglossales, a small group of vascular plants. ...

External links

• Ophioglossophyta images