Resumen de Sobre la presencia de "Asplenium trichomanes" nothosubsp. "staufferi" y "Asplenium x alternifolium" nothosubsp. "heufleri" en el norte de la Península Ibérica

Francisco Javier Pérez Carro, María Pilar Fernández Areces, Tomás Emilio Díaz González

• español

  Se han localizado en el norte de la Península Ibérica Asplenium trichomanes L. nothosubsp. staufferi Lovis & Reichstein [A. trichomanes subsp. pachyrachis (Christ) Lovis & Reichsteinx A trichomanes subsp. quadrivalens D. E. Meyer] y A. x alternifolium Wulfen nothosubsp. heufleri (Reichardt) Aizpuru, Catalán & Salvo [A. septentrionale (L.) Hoffm, subsp.

  septentrionale x A. trichomanes subsp. quadrivalens]. La morfología de ambos táxones, intermedia entre la de sus progenitores, demuestra su origen híbrido. Se aportan pruebas del apareamiento anormal de los cromosomas durante la meyosis. El número de bivalentes y univalentes apoya el origen previamente supuesto.

• English

  Asplenium trichomanes nothosubsp. staufferi Lovis & Reichstein [A. trichomanes subsp. pachyrachis (Christ) Lovis & Reichstein x A. trichomanes subsp. quadrivalens D. E. Meyer] and A. x alternifolium Wulfen nothosubsp. heufleri (Reichardt) Aizpuru, Catalán & Salvo [A. septentrionale (L.) Hoffm, subsp. septentrionale x A. trichomanes subsp. quadrivalens] has been located in the northern Iberian Península. The present work attempts to provide a morphological characterization of both hybrids, intermediate between those of the parent plants. In the case of A. x alternifolium nothosubsp. heufleri, we take into account the morphological features (based on the work of REICHSTEIN, 1984, among others) which allow this taxon to be distinguished from nothosubsp. alternifolium. A cytological study of meiosis in spore mother cells from sporangia of the studied material, although carried out with difficulties, supports the hybrid origin of these plants previously postulated by observation of aborted sporangial contents. The high number of bivalents in these meioses further corroborates the conclusions of the morphological study.