Amauropelta struthiopteroides (C.Chr.) Salino & T.E.Almeida
Descripción
Differs from T. balbisii by: blades with proximal pinnae gradually (not subabruptly) reduced; segments rather oblique; indument abaxially completely absent on the rachises, costae, and tissue between veins. Also similar to T. resinifera except: pinnae broader; segments longer; indument absent on the blades abaxially.A
Forma de vida
TerrestreA
Ejemplar revisado
(Related to the synonym Thelypteris struthiopteroides) Chis (Breedlove 22513, 31584, 31617, DS; Matuda 18117, DS, F, MEXU, US). Oax (Hallberg 1759, NY).A
Elevación
400 – 500(– 1000) mA
Ecología y Hábitat
Along trails.A
Tipo de vegetación
Selva altaA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
(In relation to the synonym Thelypteris struthiopteroides) This species is closely related to and more or less intermediate between T. resinifera and T. balbisii (which see for differences). It may have had a hybrid origin or have been involved in the ancestry of these two species. Further collections and study are needed to clarify relationships among the three species. All three (and also T. mortonii and T. sancta) have persistent indusia and sessile glands on the tissue between veins abaxially, but lack costal scales and hamate hairs. By this combination of characters they can be distinguished from other Mexican species except T. cinerea, which differs by the uniformly short pubescence and small fronds, and T. cheilanthoides, which has immersed veins, thicker laminae, and submarginal sori. Thelypteris cheilanthoides usually grows at higher elevations than does T. struthiopteroides.A