ORIGINAL ARTICLE
Bacidia genuensis B. de Lesd. resurrected
1
Museum of Evolution, Uppsala University, Norbyvägen 16, SE-75236
Uppsala, Sweden
Publication date: 2023-12-29
Plant and Fungal Systematics 2023; 68(2): 280-284
KEYWORDS
ABSTRACT
The species described as Bacidia genuensis is transferred here to Bacidina as
B. genuensis (Ramalinaceae, Lecanorales, lichenized Ascomycota). An updated morphological
description is provided. The species is characterized by mostly blackish apothecia
on a thick, microsquamulose thallus, a crystal-inspersed proper exciple that is mostly
prosoplechtenchymatous, an ascus with a wide and dome-shaped axial body and an expanded
c-layer (resulting in a thin, amyloid d-layer), a blue-green pigment in the epihymenium,
proper exciple, and pycnidial wall, and an orange-brown, K+ intensifying pigment in the
hypothecium and sometimes proper exciple. This combination of characters sets the species
apart from its potentially close relatives Bacidina egenula and B. indigens, as well
as the superficially similar, but more distantly related, Toniniopsis bagliettoana. Bacidina
genuensis is currently known from a few sites in northern Italy, where it inhabits weathered
and apparently shaded mortar of masonry.
FUNDING
NO
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