


Lanzia ovispora Spooner 1987

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Descriptions
Lanzia ovispora Spooner 1987
Lanzia ovispora Spooner 1987
Lanzia ovispora Spooner 1987
DERIVATION: From Latin ovi-, egg, and spores, referring to the form of the ascospores.
Lanzia ovispora shows some similarity to L. berggrenii and the type collection had, in fact, been referred to L. metrosideri, treated in the present account as a variety of L. berggrenii, in the herbarium. Both are foliicolous species with a fibrillose surface meshwork on the receptacle. Lanzia ovispora differs from L. berggrenii in colour and in ascospore characters. Stromatic development is variable, though conspicuous in patches, and it undoubtedly belongs in the Sclerotiniaceae. The ectal excipulum of both the stipe and receptacle is composed of prismatic cells with somewhat thickened and refractive walls, though towards the margin the cells become thin-walled. I do not regard this as a gelatinized excipulum as exhibited by species of Poculum, and, therefore, refer this species to Lanzia. The fibrillose surface, composed of brown, granularly-roughened hyphae is also characteristic of the genus.
Lanzia griseliniae has similarly deep-coloured, foliicolous apothecia but lacks the fibrillose meshwork on the receptacle and differs otherwise from L. ovispora in having narrower spores and asci. Lanzia albo-atra (Hennings) Dumont is probably also closely related. It has a fibrillose covering layer to the receptacle and broad ascospores, but differs markedly in colour.