Flora of New Zealand Series

≡Calicium chlorellum Ach., Methodus: 89 (1803).

=Chaeonotheca carthusiae (Harm.) Lettau, Festschr. Preuss. bot. Ver.: 27 (1912).

≡Calicium carthusiae Harm., Lichenes de France 1: 186 (1905).

Descriptions : Flora (1985: 86 – as Chaenotheca carthusiae); Tibell (1987: 82).

Chemistry : Thallus K−, C−, KC−, Pd−; without any secondary chemistry. The yellow pruina of the apothecia contains vulpinic acid.

N: Northland (Opuketi) to Wellington (Ohakune). S: Nelson (Tasman Mts) to Southland (Pourakino Valley). Mainly on lignum of beech and podocarps (Nothofagus fusca, N. menziesii, N. solandri, Agathis australis, Dacrydium cupressinum, Podocarpus totara). Also on lignum of tawa, fuchsia, broadleaf, Salix sp. and Vitex lucens. Occasionally on bark of kauri, fuchsia, totara and red, mountain and silver beech, 90–1010 m. Widely distributed in cool temperate and temperate regions in Eurasia, North, Central and South America and Australia (Tibell 1999c: 32; McCarthy 2003c, 2006; Nimis & Martellos 2003; Tibell & Thor 2003; Hermansson & Pystina 2004).

Cosmopolitan

Exsiccati : Tibell (1982: No. 58 – as Chaenotheca carthusiae).

Illustrations : Tibell (1987: 83, fig. 51; 1996b: 31, fig. 19B; 1999c: 83).

Chaenotheca chlorella is characterised by: its yellow-pruinose apothecia; the ±ellipsoidal spores with a coarse and irregular ornamentation, and the association with Stichococcus or Trebouxia as photobiont.