La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	The morphology and cytology of a new Polystichum (Pteridophyta: Dryopteridaceae) hybrid from South Africa
Titre original:	The morphology and cytology of a new Polystichum (Pteridophyta
Auteurs :	J. P. Roux, Auteur
Type de document :	Article
Dans :	Botanical Journal of the Linnean Society (124(4) 1997-08-01)
Article en page(s) :	375-381
Résumé :	A new Polystichum (Pteridophyta: Dryopteridaceae) hybrid, P. x saltum is described. Several micromorphological characters are anomalous in their being a summation of the character states of the progenitors rather than being intermediate or closer to one of the parent species. The putative parents of this sterile hybrid are P. transvaalense and P. wilsonii, both sexual tetraploids (2 n = 164). Polystichum x saltum also has a somatic chromosome number of 2n = 164, but meiosis yields univalents and bivalents.
En ligne :	https://doi.org/10.1111/j.1095-8339.1997.tb02003.x

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