Marchantiopsida

Marchantiopsida

[mär‚shan·tē′äp·sə·də]
(botany)
The liverworts, a class of lower green plants; the plant body is usually a thin, prostrate thallus with rhizoids on the lower surface.
References in periodicals archive ?
Antheridia and archegonia usually born in receptacles Marchantiopsida: Key 1 4.
Monografia del subgenero Meteoriopsis del genero Frullania (Frullaniaceae, Marchantiopsida).
As the result of molecular analysis, the Treubiales and Haplomitriales (Haplomitriopsida) are now recognized as sister to all other liverworts and the Blasiales are sister to the Marchantiidae in a monophyletic Marchantiopsida. In the mosses, the several non-peristomate groups (Andreaea, Sphagnum and Takakia) are confirmed as early divergent forms and Oedopodium is now recognized as sister to the predominate clade of peristomate mosses.
According to a recent synthesis (Crandall-Stotler & Stotler, 2000), the phylum Marchantiophyta (liverworts) is divided into three classes, the small early divergent Haplomitriopsida, Marchantiopsida (complex thalloids) and Jungermanniopsida (simple thalloid and leafy).
Whereas the Jungermanniopsida exhibit extreme quadrilobing, the Marchantiopsida are characterized by a gradation in quadripolarity and a diversity of spindle types and patterns of meiosis.
patens, we attempted to reveal miR390 sequences in liverworts Marchantia polymorpha (class Marchantiopsida) and Harpanthus flotovianus (class Jungermanniopsida) where these genes were not reported.
Assuming basal position of Marchantiopsida among land plants [25, 32, 34], it can be proposed that the ancient plant miR390-dependent TAS molecular machinery firstly evolved to target AP2-like mRNAs and only then both ARF- and AP2-specific mRNAs.
Conocephalum salebrosum Szweykowski, Buczkowska & Odrzykoski (Marchantiopsida): modeling the ocurrence of a hygrophytic species new to the bryolora of Portugal, Madeira and Azores.
Hepaticas y antocerotas (Marchantiopsida y Anthocerotopsida) de Salamanca (Espana) Botanica Complutensis 25: 207-212.
Class 1 Marchantiopsida (Hepaticae, Hepatophyta, Hepaticopsida, Liverworts)
Diversity in meiotic spindle origin and determination of cytokinetic planes in sporogenesis of complex thalloid liverworts (Marchantiopsida).
Conocephalum salebrosum (Marchantiopsida) new to Spain.