Helecho (Notholaena brevistipes)
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Helecho (Notholaena brevistipes)
¿Tienes alguna duda, sugerencia o corrección acerca de este taxón? Envíanosla y con gusto la
atenderemos.
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Introduction 1,2
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This species is known from a single hillside and associated roadside rockcut in southern Tamaulipas,
near the town of Aldama. A moderately open dry deciduous forest of spiny Fabaceae, Croton,
Ceratozamia, and grasses dominates the hillside; the Notholaena is restricted to pockets at the base of
rocks, or, most commonly, the face of the rockcut itself.
This location—deep in Mexico’s Gulf coastal plain—is unusual for any notholaenid, almost all of which
are restricted to higher elevation sites that have more abundant rocky habitats. Notholaena brevistipes
was first described in 2004 (Mickel & Smith, 2004).
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Characteristics 1,2
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Notholaena brevistipes is a well-behaved member of the core Notholaena I clade: it is strongly white
farinose beneath, with linear (slightly elliptical) leaves, and has scattered scales and hairs on the stalks
and rachises. For a discussion of similar species, see the Phylogenetic Relationships section, below. The
only time I have been able to see this species, unfortunately, Mexico was still in a drought, and thus all
the plants were dormant, with their leaves curled up.
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Discussion of phylogenetic relationships 1,2
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Notholaena brevistipes is very likely closely related to another species that is also known from a single
location—Notholaena brachycaulis. Both species have very short stalks (the leaf lobes start close to the
point where the leaf branches off from the rhizome), but brevistipes has more pinna pairs, each with
fewer lobes, and is white rather than yellow farinose (Mickel & Smith, 2004). Notholaena brachycaulis
has not yet been included in any phylogenetic analyses.
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References
1. Rothfels, Carl.2010. Notholaena brevistipes Mickel 2004. Aldama Cloakfern.Version 07 January
2010 (under construction).http://dev.tolweb.org/Notholaena_brevistipes/133592/2010.01.07 in The
Tree of Life Web Project, http://tolweb.org/
2. © <a href="http://www.pryerlab.net/cgi-bin/t_people.cgi?action=page&pkey=191">Carl
Rothfels</a>, some rights reserved
