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Diphasium Gayanum
''Diphasium'' is a genus of lycophytes in the family Lycopodiaceae. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), it is placed in the subfamily Lycopodioideae. Some sources do not recognize the genus, sinking it into ''Lycopodium'', others include it in ''Diphasiastrum''. ''Diphasium'' species are mostly native to the temperate southern hemisphere, but extend northwards into Central America and the Caribbean. Species , the ''Checklist of Ferns and Lycophytes of the World'' recognized the following species: *''Diphasium gayanum'' (J.Rémy) Holub *''Diphasium jussiaei'' (Desv. ex Poir.) Rothm. *''Diphasium lawessonianum'' (B.Øllg.) B.Øllg. *''Diphasium scariosum ''Diphasium scariosum'', synonym ''Lycopodium scariosum'', commonly known as spreading clubmoss or creeping club moss, is a species in the club moss family Lycopodiaceae. The genus '' Diphasium'' is accepted in the Pteridophyte Phylogeny Group c ...'' (G.Forst.) Rothm. References Lycopodiace ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diphasium Scariosum
''Diphasium scariosum'', synonym ''Lycopodium scariosum'', commonly known as spreading clubmoss or creeping club moss, is a species in the club moss family Lycopodiaceae. The genus ''Diphasium'' is accepted in the Pteridophyte Phylogeny Group classification of 2016 (PPG I), but not in other classifications which submerge the genus in ''Lycopodium''. ''D. scariosum'' is native to Australia, New Zealand, and Borneo Borneo (; id, Kalimantan) is the third-largest island in the world and the largest in Asia. At the geographic centre of Maritime Southeast Asia, in relation to major Indonesian islands, it is located north of Java, west of Sulawesi, and eas ....T.E.R:R.A.I.N - Taranaki Educational Resource: Research, Analysis and Information Network (New Zealand), ''Lycopodium scariosum'' (Creeping club moss) ''Diphasium scariosum'' has stems that lie on the ground, are multi branched and can grow to 2 m long. The leaves are flat and can be up to 4 mm long. References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lycopodiopsida
Lycopodiopsida is a class of vascular plants known as lycopods, lycophytes or other terms including the component lyco-. Members of the class are also called clubmosses, firmosses, spikemosses and quillworts. They have dichotomously branching stems bearing simple leaves called microphylls and reproduce by means of spores borne in sporangia on the sides of the stems at the bases of the leaves. Although living species are small, during the Carboniferous, extinct tree-like forms formed huge forests that dominated the landscape and contributed to coal deposits. The nomenclature and classification of plants with microphylls varies substantially among authors. A consensus classification for extant (living) species was produced in 2016 by the Pteridophyte Phylogeny Group (PPG I), which places them all in the class Lycopodiopsida, which includes the classes Isoetopsida and Selaginellopsida used in other systems. (See Table 2.) Alternative classification systems have used ranks fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lycopodiaceae
The Lycopodiaceae (class Lycopodiopsida, order Lycopodiales) are an old family of vascular plants, including all of the core clubmosses and firmosses, comprising 16 accepted genera and about 400 known species. This family originated about 380 million years ago in the early Devonian, though the diversity within the family has been much more recent. "Wolf foot" is another common name for this family due to the resemblance of either the roots or branch tips to a wolf's paw. Description Members of Lycopodiaceae are not spermatophytes and so do not produce seeds. Instead they produce spores, which are oily and flammable, and are the most economically important aspects of these plants. The spores are of one size (i.e. the plants are isosporous) and are borne on a specialized structure at the apex of a shoot called a strobilus (plural: strobili), which resembles a tiny battle club, from which the common name derives. Members of the family share the common feature of having a microphyll, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pteridophyte Phylogeny Group
The Pteridophyte Phylogeny Group, or PPG, is an informal international group of systematic botanists who collaborate to establish a consensus on the classification of pteridophytes (lycophytes and ferns) that reflects knowledge about plant relationships discovered through phylogenetic studies. In 2016, the group published a classification for extant pteridophytes, termed "PPG I". The paper had 94 authors (26 principal and 68 additional). PPG I A first classification, PPG I, was produced in 2016, covering only extant (living) pteridophytes. The classification was rank-based, using the ranks of class, subclass, order, suborder, family, subfamily and genus. Phylogeny The classification was based on a consensus phylogeny, shown below to the level of order. The very large order Polypodiales was divided into two suborders, as well as families not placed in a suborder: Classification to subfamily level To the level of subfamily, the PPG I classification is as follows. *Class Lycopodi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lycopodioideae
''Lycopodioideae'' is a subfamily in the family Lycopodiaceae in the Pteridophyte Phylogeny Group classification of 2016 (PPG I). It is equivalent to a broad circumscription of the genus ''Lycopodium'' in other classifications. Like all lycophytes, members of the Lycopodioideae reproduce by spores. The oldest fossils of modern members of the family date to the Early Cretaceous. Description The sporophytes of Lycopodioideae species are relatively short herbaceous plants. They have stems with pseudomonopodial branching in which unequal binary branching produces the appearance of a main stem with secondary side branches. The main stems are indeterminate and of various forms, including rhizomatous, creeping, trailing and climbing. They usually form roots at intervals along their length. The branches are usually determinate (i.e. of limited growth and extension). Sporangia are borne at the bases or in the axils of special spore-bearing leaves (sporophylls), which are notably different ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lycopodium
''Lycopodium'' (from Greek ''lykos'', wolf and ''podion'', diminutive of ''pous'', foot) is a genus of clubmosses, also known as ground pines or creeping cedars, in the family Lycopodiaceae. Two very different circumscriptions of the genus are in use. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), ''Lycopodium'' is one of nine genera in the subfamily Lycopodioideae, and has from nine to 15 species. In other classifications, the genus is equivalent to the whole of the subfamily, since it includes all of the other genera. More than 40 species are accepted. Description They are flowerless, vascular, terrestrial or epiphytic plants, with widely branched, erect, prostrate, or creeping stems, with small, simple, needle-like or scale-like leaves that cover the stem and branches thickly. The leaves contain a single, unbranched vascular strand, and are microphylls by definition. The kidney-shaped (reniform) spore-cases (sporangia) contain spores of one kind only, ( i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diphasiastrum
''Diphasiastrum'' is a genus of clubmosses in the plant family Lycopodiaceae. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), it is placed in the subfamily Lycopodioideae. It is closely related to the genus ''Lycopodium'', and some botanists treat it within a broad view of that genus as a section, ''Lycopodium'' sect. ''Complanata''. Some species superficially resemble diminutive gymnosperms and have been given common names such as ground-pine or ground-cedar. There are 16 species, and numerous natural hybrids in the genus; many of the hybrids are fertile, allowing their occurrence to become frequent, sometimes more so than the parent species. The basal chromosome count for this genus is ''n=23'', which is distinctively different from other lycopods. Several species have been used economically for their spores, which are harvested as Lycopodium powder. Species , the ''Checklist of Ferns and Lycophytes of the World'' recognized the following species: *' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diphasium Gayanum
''Diphasium'' is a genus of lycophytes in the family Lycopodiaceae. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), it is placed in the subfamily Lycopodioideae. Some sources do not recognize the genus, sinking it into ''Lycopodium'', others include it in ''Diphasiastrum''. ''Diphasium'' species are mostly native to the temperate southern hemisphere, but extend northwards into Central America and the Caribbean. Species , the ''Checklist of Ferns and Lycophytes of the World'' recognized the following species: *''Diphasium gayanum'' (J.Rémy) Holub *''Diphasium jussiaei'' (Desv. ex Poir.) Rothm. *''Diphasium lawessonianum'' (B.Øllg.) B.Øllg. *''Diphasium scariosum ''Diphasium scariosum'', synonym ''Lycopodium scariosum'', commonly known as spreading clubmoss or creeping club moss, is a species in the club moss family Lycopodiaceae. The genus '' Diphasium'' is accepted in the Pteridophyte Phylogeny Group c ...'' (G.Forst.) Rothm. References Lycopodiace ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diphasium Jussiaei
''Diphasium'' is a genus of lycophytes in the family Lycopodiaceae. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), it is placed in the subfamily Lycopodioideae. Some sources do not recognize the genus, sinking it into ''Lycopodium'', others include it in ''Diphasiastrum''. ''Diphasium'' species are mostly native to the temperate southern hemisphere, but extend northwards into Central America and the Caribbean. Species , the ''Checklist of Ferns and Lycophytes of the World'' recognized the following species: *''Diphasium gayanum'' (J.Rémy) Holub *''Diphasium jussiaei'' (Desv. ex Poir.) Rothm. *''Diphasium lawessonianum'' (B.Øllg.) B.Øllg. *''Diphasium scariosum ''Diphasium scariosum'', synonym ''Lycopodium scariosum'', commonly known as spreading clubmoss or creeping club moss, is a species in the club moss family Lycopodiaceae. The genus '' Diphasium'' is accepted in the Pteridophyte Phylogeny Group c ...'' (G.Forst.) Rothm. References Lycopodia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diphasium Lawessonianum
''Diphasium'' is a genus of lycophytes in the family Lycopodiaceae. In the Pteridophyte Phylogeny Group classification of 2016 (PPG I), it is placed in the subfamily Lycopodioideae. Some sources do not recognize the genus, sinking it into ''Lycopodium'', others include it in ''Diphasiastrum''. ''Diphasium'' species are mostly native to the temperate southern hemisphere, but extend northwards into Central America and the Caribbean. Species , the ''Checklist of Ferns and Lycophytes of the World'' recognized the following species: *''Diphasium gayanum'' (J.Rémy) Holub *''Diphasium jussiaei'' (Desv. ex Poir.) Rothm. *''Diphasium lawessonianum'' (B.Øllg.) B.Øllg. *''Diphasium scariosum ''Diphasium scariosum'', synonym ''Lycopodium scariosum'', commonly known as spreading clubmoss or creeping club moss, is a species in the club moss family Lycopodiaceae. The genus ''Diphasium'' is accepted in the Pteridophyte Phylogeny Group cla ...'' (G.Forst.) Rothm. References Lycopodiace ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
