ABSTRACT: Glomus kerguelense sp. nov. was isolated from a gravelly mineral soil at Kerguelen Islands, in association with the rhizosphere of introduced Agrostis stolonifera, Poaceae. This golden yellow spored species is distinguished from other Glomaceae species by the granular ornamentation of the interior surface of the inner spore wall layer, and by a spongy zone gradually developed within the middle spore wall layer. The isolate differentiated vesicles and arbuscles inside Allium porrum roots and sporulated profusely in pot cultures. Glomus kerguelense is, with G. antarcticum, the second Glomales species described originally from the Antarctic region.

KEYWORDS:Arbuscular mycorrhizal fungus, new species

NOMENCLATURAL NOVELTIES:
Glomus kerguelense Dalpé & Strullu, p. 53