Browsing by Subject "Marsileaceae"
Now showing items 1-7 of 7
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Assessing phylogenetic relationships in extant heterosporous ferns (Salviniales), with a focus on Pilularia and Salvinia
(Botanical Journal of the Linnean Society, 2008-08-01)Heterosporous ferns (Salviniales) are a group of approximately 70 species that produce two types of spores (megaspores and microspores). Earlier broad-scale phylogenetic studies on the order typically focused on one or, ... -
Comparative morphology of reproductive structures in heterosporous water ferns and a reevaluation of the sporocarp
(International Journal of Plant Sciences, 2006-07-01)Heterosporous water ferns (Marsileaceae and Salviniaceae) are the only extant group of plants to have evolved heterospory since the Paleozoic. These ferns possess unusual reproductive structures traditionally termed "sporocarps." ... -
Evolution of leaf form in marsileaceous ferns: evidence for heterochrony.
(Evolution; international journal of organic evolution, 2009-02)Using an explicit phylogenetic framework, ontogenetic patterns of leaf form are compared among the three genera of marsileaceous ferns (Marsilea, Regnellidium, and Pilularia) with the outgroup Asplenium to address the hypothesis ... -
Marsileaceae sporocarps and spores from the late cretaceous of Georgia, U.S.A.
(International Journal of Plant Sciences, 2000-01-01)A new species provisionally assigned to the extant genus Regnellidium Lindm. (Regnellidium upatoiensis sp. nov.) is established for isolated sporocarps assignable to the heterosporous water fern family Marsileaceae. Three ... -
Molecular phylogenetic relationships and morphological evolution in the heterosporous fern genus Marsilea
(Systematic Botany, 2007-01-01)Using six plastid regions, we present a phylogeny for 26 species of the heterosporous fern genus Marsilea. Two well-supported groups within Marsilea are identified. Group I includes two subgroups, and is relatively species-poor. ... -
Phylogeny of Marsileaceous Ferns and Relationships of the Fossil Hydropteris pinnata Reconsidered.
(International journal of plant sciences, 1999-09)Recent phylogenetic studies have provided compelling evidence that confirms the once disputed hypothesis of monophyly for heterosporous leptosporangiate ferns (Marsileaceae and Salviniaceae). Hypotheses for relationships ... -
Structure and function of spores in the aquatic heterosporous fern family Marsileaceae
(International Journal of Plant Sciences, 2002-01-01)Spores of the aquatic heterosporous fern family Marsileaceae differ markedly from spores of Salviniaceae, the only other family of heterosporous ferns and sister group to Marsileaceae, and from spores of all homosporous ...
