|
Vittarioid
Vittarioideae is a subfamily of the fern family Pteridaceae, in the order Polypodiales. The subfamily includes the previous families Adiantaceae (adiantoids or maidenhair ferns) and Vittariaceae (vittarioids or shoestring ferns). Description The subfamily includes two distinct groups of ferns: the adiantoids, consisting of the single genus ''Adiantum'', and the vittarioids, several genera, including ''Vittaria'', which typically have highly reduced leaves, usually entire, and an epiphytic habit. The ferns historically considered as ''Adiantum'' include both petrophilic and terrestrial plants. The vittarioid ferns are primarily epiphyte, epiphytic in tropical regions and all have simple leaves with sorus, sori that follow the veins and lack true indusium, indusia; the sori are most often marginal with a false indusium formed from the reflexed leaf margin. The family also includes a species, ''Vittaria appalachiana'', that is highly unusual in that the sporophyte stage of the life c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haplopteris
''Haplopteris'' is a genus of vittarioid ferns, a member of subfamily Vittarioideae and family Pteridaceae. Description Like other vittarioids, the members of ''Haplopteris'' are epiphytes. The rhizome has a distinct upper and lower side, lacking radial symmetry, a characteristic that separates it from '' Radiovittaria''. Leaves are borne in two ranks in a single plane, and are usually simple, occasionally forked. The leaves have a distinct costa (midrib). Most species have netlike leaf veins which form two rows of areolae (the "gaps" in the net) on either side of the midline; two species bear a single leaf vein only. The linear sori, in most species, are confined to a commissural vein (paralleling the edge of the leaf margin and set just back from it, joining the ends of the netted veins); in the two species with a single vein, the sori follow that vein. The sori bear paraphyses (minute hairs) with a cell at the tip shaped like an inverted cone, separating it from ''Vittaria'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antrophyum
''Antrophyum'' is a genus of ferns in the family Pteridaceae.''Antrophyum'' USDA Germplasm Resources Information Network (GRIN) 14 Jan 2012 They are commonly known as lineleaf ferns. Description Like most other vittarioid ferns, members of the genus have simple, straplike leaves. Most species lack a (midrib), although a few have a partial one, and the leaves are generally more than wide. The leaves have netlike venation, with three or more rows of areolae ("gaps" in the net of veins) on either side of the midline. Linear sori< ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pteridaceae
Pteridaceae is a family of ferns in the order Polypodiales, including some 1150 known species in ca 45 genera (depending on taxonomic opinions), divided over five subfamilies. The family includes four groups of genera that are sometimes recognized as separate families: the adiantoid, cheilanthoid, pteridoid, and hemionitidoid ferns. Relationships among these groups remain unclear, and although some recent genetic analyses of the Pteridales suggest that neither the family Pteridaceae nor the major groups within it are all monophyletic, as yet these analyses are insufficiently comprehensive and robust to provide good support for a revision of the order at the family level. Description Members of Pteridaceae have creeping or erect rhizomes. The leaves are almost always compound and have linear sori that are typically on the margins of the leaves and lack a true indusium, typically being protected by a false indusium formed from the reflexed margin of the leaf. Taxonomy Tradi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adiantum
''Adiantum'' (), the maidenhair fern, is a genus of about 250 species of ferns in the subfamily Vittarioideae of the family Pteridaceae, though some researchers place it in its own family, Adiantaceae. The genus name comes from Greek, meaning "unwetted", referring to the fronds' ability to shed water without becoming wet. Description They are distinctive in appearance, with dark, often black stipes and rachises, and bright green, often delicately cut leaf tissue. The sori are borne submarginally, and are covered by reflexed flaps of leaf tissue which resemble indusia. Dimorphism between sterile and fertile fronds is generally subtle. They generally prefer humus-rich, moist, well-drained sites, ranging from bottomland soils to vertical rock walls. Many species are especially known for growing on rock walls around waterfalls and water seepage areas. The highest species diversity is in the Andes. Fairly high diversity also occurs in eastern Asia, with nearly 40 species in China. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vittaria
''Vittaria'', the shoestring ferns, is a genus of ferns in the Vittarioideae subfamily of the family Pteridaceae. It had previously been placed in the family Vittariaceae,Karl U. Kramer. 1990. "Vittariaceae". pages 272-277. In: Klaus Kubitzki (general editor); Karl U. Kramer and Peter S. Green (volume editors) ''The Families and Genera of Vascular Plants'' volume I. Springer-Verlag: Berlin;Heidelberg, Germany. but that family is no longer recognized.Alan R. Smith, Kathleen M. Pryer, Eric Schuettpelz, Petra Korall, Harald Schneider, and Paul G. Wolf. 2008. "Davalliaceae". pages 443-444. In: "Fern Classification". pages 417-467. In: Tom A. Ranker and Christopher H. Haufler (editors). ''Biology and Evolution of Ferns and Lycophytes''. Cambridge University Press. ''Vittaria'' consists of epiphytes, with simple, entire, narrowly linear fronds.David J. Mabberley. 2008. ''Mabberley's Plant-Book'' third edition (2008). Cambridge University Press: UK. It comprises six species, five o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vittaria Appalachiana
''Vittaria appalachiana'', or the Appalachian shoestring fern, is a fern species in the subfamily Vittarioideae of the family Pteridaceae. It is native to moist and shaded outcrops in the Appalachian Mountains. It is notable for existing only in the gametophyte stage of development, unlike other fern species in which the sporophyte stage predominates. The species reproduces asexually through gemmae. The species was known to bryologists, who at first confused it with a liverwort. Aaron John Sharp brought the species to the attention of pteridologists Warren H. Wagner and Alma Gracey Stokey. It was formally named by Farrar & Mickel in 1991. Description The sporophyte (normally the dominant generation of the fern life cycle) is almost never formed in this species. Tiny sporophytes have been found at one site in Ohio, and have twice been produced in culture. The few ''V. appalachiana'' sporophytes known have had rhizomes with clathrate (lattice-patterned) scales, and und ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adiantum Lunulatum
''Adiantum philippense,'' (''Goyali Lota, Kalijhant'' in Bengali: গয়ালী লতা, ''Hamsapadi, Kitamata, Tripadika'' in Sanskrit, ''Jarigida'' in Kannada, ''Hamsapadi'' in Hindi ), also known as walking maidenhair fern, or black maidenhair, is a species of maidenhair fern (''Adiantum'') that is widely distributed through the southern hemisphere, notably Asia, Africa, and Madagascar. Taxonomy The species was named by Carl Linnaeus in 1753. It was lectotypified by R.E.G. Pichi-Sermolli in 1957 based on an illustration by James Petiver. The identifiability of this illustration was disputed, leading some authorities to deprecate ''A. philippense'' as a ''nomen dubium'' and use the next available name for the taxon, ''Adiantum lunulatum'' Burm.f.. Burman conferred this specific epithet based on its half-moon shaped pinnae. However, Christopher Fraser-Jenkins located the original material and drawing of the lectotype sent to Petiver by Georg Joseph Kamel in the Sl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Borivoj Presl
Carl Borivoj Presl ( cs, Karel Bořivoj Presl; 17 February 1794 – 2 October 1852) was a Czech botanist. Biography Presl lived his entire life in Prague, and was a professor of botany at the University of Prague (1833–52).BHL Taxonomic literature : a selective guide to botanical publications He made an expedition to in 1817, and with his brother, published a "Flora bohemica" titled "''Flora čechica: indicatis medicinalibus, oeconomicis technologicisque plantis''" in 1819. His older brother was also a noted botanist; the journal '' [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tribe (biology)
In biology, a tribe is a taxonomic rank above genus, but below family and subfamily. It is sometimes subdivided into subtribes. By convention, all taxonomic ranks from genus upwards are capitalized, including both tribe and subtribe. In zoology, the standard ending for the name of a zoological tribe is "-ini". Examples include the tribes Caprini (goat-antelopes), Hominini (hominins), Bombini (bumblebees), and Thunnini (tunas). The tribe Hominini is divided into subtribes by some scientists; subtribe Hominina then comprises "humans". The standard ending for the name of a zoological subtribe is "-ina". In botany, the standard ending for the name of a botanical tribe is "-eae". Examples include the tribes Acalypheae and Hyacintheae. The tribe Hyacintheae is divided into subtribes, including the subtribe Massoniinae. The standard ending for the name of a botanical subtribe is "-inae". In bacteriology, the form of tribe names is as in botany, e.g., Pseudomonadeae, based on the ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grammitid
Grammitidoideae is a subfamily of the fern family Polypodiaceae, whose members are informally known as grammitids. It comprises a clade of about 750 species. They are distributed over higher elevations in both the Old and New World. This group was previously treated as a separate family, Grammitidaceae until molecular phylogenies showed it to be nested within the Polypodiaceae. It has since been treated as an unranked clade within subfamily Polypodioideae (renamed tribe Polypodieae in one classification), and, most recently, as a separate subfamily (reducing Polypodioideae to an evolutionary grade). Circumscription In 2011, Christenhusz ''et al.'' placed the grammitid ferns in the subfamily Polypodioideae, within the Polypodiaceae, as an informal group without rank. In 2014, Christenhusz and Chase expanded the circumscription of both family and subfamily, placing the Polypodioideae as previously delimited, including grammitids, in tribe Polypodieae. The PPG I classification of 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ananthacorus
''Ananthacorus'' is a genus of ferns in the subfamily Vittarioideae of the family Pteridaceae with a single species ''Ananthacorus angustifolius''. Its native distribution ranges from Mexico through Central America to northern South America. It has been introduced into parts of Malesia Malesia is a biogeographical region straddling the Equator and the boundaries of the Indomalayan and Australasian realms, and also a phytogeographical floristic region in the Paleotropical Kingdom. It has been given different definitions. Th .... References Pteridaceae Monotypic fern genera {{Pteridaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
