• Catillaria nigroclavata (Nyl.) Schuler
Catillaria nigroclavata
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(Map updated: 11 August 2009)

This species is mainly an epiphyte of twigs. Easily missed, it is often dismissed as the similar Amandinea punctata (described elsewhere) which prefers alternative habitats such as dusty tree boles and the root plate. Essentially, the thin, beige to brownish thallus is covered with a scattering of minute (0.15-0.3mm diam.), flat, black discs, which stand out from the thallus so are easy to see. A microscope squash (this can be done in seconds) will clearly show the one-septate spores and the brown, swollen tips of the paraphyses. Southern Ireland with scattered outpost in the north.

Key characteristics

  • Twig lichen, with tiny, flat, black discs on a faint beige-brown thallus
  • Spores one-septate (8-10Ám long).

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Catillaria nigroclavata (Nyl.) Schuler. [In] LichenIreland. Accessed on 2020-08-05.