Abstract
The Late Devonian (earliest Frasnian) plant Metacladophyton ziguinum sp. nov. is described from Hubei Province, south China. Sterile main axes and first‐ and second‐order lateral axes possess linear spines that are sometimes dichotomous. Paired second‐order axes have a common base and occur oppositely and decussately on first‐order axes to form four vertical rows. With paired tips curving in opposite directions, sterile ultimate appendages are dichotomous, attached irregularly to first‐order axes and alternately/suboppositely to second‐order ones. Fertile ultimate appendages bifurcate equally three to five times and terminate in ovoid and erect sporangia in pairs. Metacladophyton ziguinum combines a protostele in the lateral axis and a dissected stele in the main axis. The primary xylem is U shaped and radially five ribbed in the protostele and consists of four V/U‐shaped or straplike ribs radially arranged in dissected stele. The mesarch primary xylem bears one or two protoxylem lacunae near the rib tip ...
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
