meristele

a distinct vascular strand surrounded by an endodermis that occurs in some ferns and results in the break-up of the STELE.

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2C) y el periciclo (p) de una capa celular excepto en la region externa del meristele.

Arquitectura y anatomia foliar del complejo Polypodium plesiosorum sensu Moran (Polypodiaceae)

5A and B), several centimeters long, were investigated by Chahud (2011), who placed them in the genus Tietea (Solms-Laubach, 1913), by the shape of the meristeles, similar to those described by Derby (1915) and Tavares (2007), at the Corumbatai Formation, units younger than Tatui, and also by the absence of the organized meristeles in the central part of the stele, features which exclude the genus Psaronius, with well defined and organized meristeles.

The Tatui Formation (Early Permian, Parana Basin), Brazil: Paleontology and Paleoenvironmental Considerations/La Formacion Tatui (Permico Temprano, Cuenca del Parana), Brasil: Consideraciones paleontologicas y paleoambientales

The cells with un-lignified, thickened wall, with cap or U-shape around the meristeles belong to the collenchyma, in contrast with other fern families.

Anatomia de seis especies de helechos del genero Dryopteris (Dryopteridaceae) de Mexico

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