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Jensenia
''Jensenia'' is a bryophyte plant genus in the liverwort family Pallaviciniaceae. It has been treated as a subgenus of Pallavicinia by several authors, though a set of features seems to set it apart as a genus. The six or seven species of the genus belong to a southern, possibly Gondwana element. General characteristics ''Jensenia'' liverworts are dioicous. Compared to '' Pallavicinia'' liverworts, their thallus grows erect, and branches tree-like, rather than trailing the ground. The thallus is perched on an ascending stipe which grows from a creeping rhizome. Slime papillae are absent from the thallus margin, though locally present elsewhere. The midrib of the thallus is broad but ill-defined. Reproductive morphology Male reproductive organs are scattered over the thallus's dorsal surface, while female organs are specifically placed near a bifurcation of the frond. The pseudoperianth, a tube of thallus tissue protecting the archegonia, is basally fused with the calyptra. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jensenia Canicruria
''Jensenia'' is a bryophyte plant genus in the liverwort family Pallaviciniaceae. It has been treated as a subgenus of Pallavicinia by several authors, though a set of features seems to set it apart as a genus. The six or seven species of the genus belong to a southern, possibly Gondwana element. General characteristics ''Jensenia'' liverworts are dioicous. Compared to '' Pallavicinia'' liverworts, their thallus grows erect, and branches tree-like, rather than trailing the ground. The thallus is perched on an ascending stipe which grows from a creeping rhizome. Slime papillae are absent from the thallus margin, though locally present elsewhere. The midrib of the thallus is broad but ill-defined. Reproductive morphology Male reproductive organs are scattered over the thallus's dorsal surface, while female organs are specifically placed near a bifurcation of the frond. The pseudoperianth, a tube of thallus tissue protecting the archegonia, is basally fused with the calyptra. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jensenia Decipiens
''Jensenia'' is a bryophyte plant genus in the liverwort family Pallaviciniaceae. It has been treated as a subgenus of Pallavicinia by several authors, though a set of features seems to set it apart as a genus. The six or seven species of the genus belong to a southern, possibly Gondwana element. General characteristics ''Jensenia'' liverworts are dioicous. Compared to '' Pallavicinia'' liverworts, their thallus grows erect, and branches tree-like, rather than trailing the ground. The thallus is perched on an ascending stipe which grows from a creeping rhizome. Slime papillae are absent from the thallus margin, though locally present elsewhere. The midrib of the thallus is broad but ill-defined. Reproductive morphology Male reproductive organs are scattered over the thallus's dorsal surface, while female organs are specifically placed near a bifurcation of the frond. The pseudoperianth, a tube of thallus tissue protecting the archegonia, is basally fused with the calyptra. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jensenia Difformis
''Jensenia'' is a bryophyte plant genus in the liverwort family Pallaviciniaceae. It has been treated as a subgenus of Pallavicinia by several authors, though a set of features seems to set it apart as a genus. The six or seven species of the genus belong to a southern, possibly Gondwana element. General characteristics ''Jensenia'' liverworts are dioicous. Compared to '' Pallavicinia'' liverworts, their thallus grows erect, and branches tree-like, rather than trailing the ground. The thallus is perched on an ascending stipe which grows from a creeping rhizome. Slime papillae are absent from the thallus margin, though locally present elsewhere. The midrib of the thallus is broad but ill-defined. Reproductive morphology Male reproductive organs are scattered over the thallus's dorsal surface, while female organs are specifically placed near a bifurcation of the frond. The pseudoperianth, a tube of thallus tissue protecting the archegonia, is basally fused with the calyptra. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jensenia Erythropus
''Jensenia'' is a bryophyte plant genus in the liverwort family Pallaviciniaceae. It has been treated as a subgenus of Pallavicinia by several authors, though a set of features seems to set it apart as a genus. The six or seven species of the genus belong to a southern, possibly Gondwana element. General characteristics ''Jensenia'' liverworts are dioicous. Compared to '' Pallavicinia'' liverworts, their thallus grows erect, and branches tree-like, rather than trailing the ground. The thallus is perched on an ascending stipe which grows from a creeping rhizome. Slime papillae are absent from the thallus margin, though locally present elsewhere. The midrib of the thallus is broad but ill-defined. Reproductive morphology Male reproductive organs are scattered over the thallus's dorsal surface, while female organs are specifically placed near a bifurcation of the frond. The pseudoperianth, a tube of thallus tissue protecting the archegonia, is basally fused with the calyptra. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jensenia Lewisi
''Jensenia'' is a bryophyte plant genus in the liverwort family Pallaviciniaceae. It has been treated as a subgenus of Pallavicinia by several authors, though a set of features seems to set it apart as a genus. The six or seven species of the genus belong to a southern, possibly Gondwana element. General characteristics ''Jensenia'' liverworts are dioicous. Compared to '' Pallavicinia'' liverworts, their thallus grows erect, and branches tree-like, rather than trailing the ground. The thallus is perched on an ascending stipe which grows from a creeping rhizome. Slime papillae are absent from the thallus margin, though locally present elsewhere. The midrib of the thallus is broad but ill-defined. Reproductive morphology Male reproductive organs are scattered over the thallus's dorsal surface, while female organs are specifically placed near a bifurcation of the frond. The pseudoperianth, a tube of thallus tissue protecting the archegonia, is basally fused with the calyptra. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jensenia Pisicolor
''Jensenia'' is a bryophyte plant genus in the liverwort family Pallaviciniaceae. It has been treated as a subgenus of Pallavicinia by several authors, though a set of features seems to set it apart as a genus. The six or seven species of the genus belong to a southern, possibly Gondwana element. General characteristics ''Jensenia'' liverworts are dioicous. Compared to '' Pallavicinia'' liverworts, their thallus grows erect, and branches tree-like, rather than trailing the ground. The thallus is perched on an ascending stipe which grows from a creeping rhizome. Slime papillae are absent from the thallus margin, though locally present elsewhere. The midrib of the thallus is broad but ill-defined. Reproductive morphology Male reproductive organs are scattered over the thallus's dorsal surface, while female organs are specifically placed near a bifurcation of the frond. The pseudoperianth, a tube of thallus tissue protecting the archegonia, is basally fused with the calyptra. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jensenia Angulata
''Jensenia'' is a bryophyte plant genus in the liverwort family Pallaviciniaceae. It has been treated as a subgenus of Pallavicinia by several authors, though a set of features seems to set it apart as a genus. The six or seven species of the genus belong to a southern, possibly Gondwana element. General characteristics ''Jensenia'' liverworts are dioicous. Compared to '' Pallavicinia'' liverworts, their thallus grows erect, and branches tree-like, rather than trailing the ground. The thallus is perched on an ascending stipe which grows from a creeping rhizome. Slime papillae are absent from the thallus margin, though locally present elsewhere. The midrib of the thallus is broad but ill-defined. Reproductive morphology Male reproductive organs are scattered over the thallus's dorsal surface, while female organs are specifically placed near a bifurcation of the frond. The pseudoperianth, a tube of thallus tissue protecting the archegonia, is basally fused with the calyptra. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jensenia Spinosa
''Jensenia spinosa'' is a dioicous bryophyte plant in the liverwort family Pallaviciniaceae. It is the only African member of the genus ''Jensenia'', and generally occurs at high elevations. It is widespread but scarce, and has been found in South Africa, Malawi, Tanzania, Rwanda ( Volcanoes National Park at 3,650m), the Democratic Republic of the Congo, as well as the islands of Mauritius, Réunion and Saint Helena Saint Helena () is a British overseas territory located in the South Atlantic Ocean. It is a remote volcanic tropical island west of the coast of south-western Africa, and east of Rio de Janeiro in South America. It is one of three constitu .... ''Jensenia spinosa'' is very similar to its neotropical relative ''J. erythropus'', though geographically isolated. Both may be confused with '' Symphyogyna'' species, but the latter's scale-shaped, rather than cup-shaped involucres have been useful in distinguishing the two genera. References Pallavicinial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pallavicinia
Pallavicinia is a globally distributed genus in the liverwort family Pallaviciniaceae Pallaviciniaceae is a widely distributed family of liverworts in the order Pallaviciniales. All species are thallose, typically organized as a thick central costa (midvein), each side with a broad wing of tissue one cell in thickness. All spe .... thallus is simple contain a strong hair like midrib. thallus area except midrib made out of one layer of cells. thallus is dark green in color and it is very small. thallus is gametophyte. it is the dominant plant. grows in shady and moist environments. thallus is green or pale green in color. 3-6cm in long and 4-5mm broad. margins are entirely or irregularly lobed. most species are distributed in tropical or sub tropical or temperate regions. can be found places like moist soil covered rocks, banks of fresh water streams. female thallus lobes with cup shaped fringed receptacles. ;Species ;formerly included References Pallaviciniales Liv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pallaviciniales
Pallaviciniales is an order of liverworts. Taxonomy * Pallaviciniineae Schuster 1984 ** Hymenophytaceae Schuster 1963 *** ''Hymenophyton'' Dumortier 1835 Umbraculum'' Gottsche 1861 non Schumacher 1817 non Kuntze 1891] ** Moerckiaceae Stotler & Crandall-Stotler 2007 *** ''Hattorianthus'' Schuster & Inoue 1975 *** ''Moerckia'' Gottsche 1860 [''Blyttia (liverwort), Blyttia'' Endlicher 1840 non Arnott 1838 non Fries 1839; '' Cordaea'' Nees 1833 non Sprengel 1831] ** Pallaviciniaceae Migula 1904 *** Pallavicinioideae Migula ex Grolle **** ''Jensenia'' Lindberg 1867 'Mittenia'' Gottsche 1864 non Lindberg 1863; ''Makednothallus">Mittenia.html" ;"title="'Mittenia">'Mittenia'' Gottsche 1864 non Lindberg 1863; ''Makednothallus'' Verdoorn 1932] **** ''Pallavicinia'' Gray 1821 nom. cons. [''Pallavicinius'' (sic); ''Dilaena'' Dumortier 1822; ''Diplolaena'' Dumortier 1831 non Brown 1814; '' Hollia'' Endlicher 1842 non Sieber 1826 non Heynhold 1846; '' Steetzia'' Lehmann 1846 non Sonder 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pallaviciniaceae
Pallaviciniaceae is a widely distributed family of liverworts in the order Pallaviciniales. All species are thallose, typically organized as a thick central costa (midvein), each side with a broad wing of tissue one cell in thickness. All species are dioicous. The greatest diversity is in Australasia, with some species endemic to that region, though species belonging to the family may be found on every continent except Antarctica. Species As accepted by GBIF; Evolutionary history One of the oldest known bryophytes is '' Pallaviciniites'' of the Devonian, discovered in New York. It bears strong similarities to extant thallus liverwort The Marchantiophyta () are a division of non-vascular land plants commonly referred to as hepatics or liverworts. Like mosses and hornworts, they have a gametophyte-dominant life cycle, in which cells of the plant carry only a single set of ... genus ''Pallavicinia'', hence the name. References Liverwort families Pallavicinial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Connation
Connation in plants is the developmental fusion of organs of the same type, for example, petals to one another to form a tubular corolla. This is in contrast to adnation, the fusion of dissimilar organs. Such organs are described as connate or adnate, respectively. When like organs that are usually well separated are placed next to each other, but not actually connected, they are described as connivent (that is the case for anthers in several genera, such as ''Solanum''). Terms for connation of flower parts *Synsepalous: All the sepals of a flower are fused into a cup or tube; the fused portion is the calyx tube, and any non fused tips are the calyx lobes. *Sympetalous: All the petals of a flower are fused into a cup, tube, or other shape. *Stamens: **Synandrous: Stamens are fused in an unspecified manner **Synfilamentous: Stamens are fused by their filaments **Synantherous: Stamens are fused by their anthers *Syncarpous: Carpels are fused together to form a compound ovary Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
