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Bacidina phacodes

Bacidina phacodes is a species of lichen belonging to the family Ramalinaceae.

Taxonomy and Nomenclature

• Scientific Name: Bacidina phacodes (Krb.) Vezda
• Family: Ramalinaceae
• Kingdom: Fungi
• Synonyms:
  • Bacidia phacodes Krb.
  • Bacidia albescens (Stizenb.) Bausch.
• Other names that have been incorrectly used, in part, to refer to Bacidina californica include:
  • Bacidia albescens auct. N. Amer.
  • Bacidia phacodes auct. N. Amer.
  • Bacidina phacodes auct. N. Amer.
• Danish Name: Krbers tensporelav
• Swedish Name: Liten lundlav
• French Name: Bacidine lenticulaire
• Czech Name: h?lkovka ?o?kovitá

Distribution and Habitat

• Bacidina phacodes is found in sheltered and humid forests.
• It has been observed on Acer campestre (Field Maple).
• Specific locations mentioned include Belgium (Mosan region) and R. Luxembg.
• It is also found in Estonia, as indicated by the "Eesti samblike levikuatlas - Atlas of the Estonian lichens."

Morphological Characteristics

• The thallus can be grayish-green, finely granular, or absent.
• Granules are approximately 0.06-0.1 mm in size.
• Isidia (vegetative propagules) are absent.
• Apothecia (fruiting bodies) are pale and lcidines, with a very light color and a diameter of less than 0.5 mm.
• Apothecia can be slightly convex, with a colorless to slightly yellowish hypothecium.
• Apothecia are described as pale beige to orange-pink, 0.2-0.5 mm wide, flat to convex, with a thin, often lighter margin.
• Conidia (asexual spores) are of two types:
  • Filiform, curved, non-septate, 7-12 x 0.6-0.8 ?m
  • Bacilliform, straight, 0-2-septate, 7-9 x c. 1.5 ?m

Ecological Role

• The IUCN Red List Category for this lichen is EN (Endangered), suggesting it faces threats in its habitat.
• Specific threats listed include:
  • 1.2: Housing & urban areas
  • 3.3: Tourism & recreation areas
  • 5.2: Gathering terrestrial plants
  • 5.4: Mining & quarrying

Interactions with Other Organisms

• Bacidina phacodes co-occurs with other lichen species.
• It has been observed alongside species such as Arthonia vinosa, Arthopyrenia persoonii, Bunodophoron melanocarpum, and Calicium glaucellum.

Further Information

• LIAS: A Global Information System for Lichenized and Non-Lichenized Ascomycetes
• Catalogue of Life
• TERMIUM (Government of Canada's terminology and linguistic data bank)
• Eesti samblike levikuatlas - Atlas of the Estonian lichens
• IUCN Red List