Flora of New Zealand Series

≡Calicium xylonellum Ach. β trabinellum Ach., Methodus: 93 (1803).

Description : Flora (1985: 59–60). See also Tibell (1987: 51).

Chemistry : Thallus K−, C−, KC−, Pd−. The yellow pruina of the apothecia consists of vulpinic acid.

N: South Auckland (Mt Honokawa to Taupo), Gisborne (Mt Hikurangi to Lake Waikaremoana), Wellington (Kaimanawa Ra. to Ohakune). S: Nelson (Tasman Mts to Lake Rotoiti), Marlborough (Mt Fyffe), Canterbury (Arthur's Pass to MacLennan's Bush near Methven), Otago (Makarora), Southland (Longwood Ra.). Mainly on lignum of beech (Nothofagus fusca, N. menziesii, N. solandri var. cliffortioides), but also on lignum of Fuchsia excorticata and Leptospermum, 150–1370 m, occurring below 400 m in South I. only. Known also from Europe, Asia, Taiwan, North and South America, Australia and East Africa (Tibell 1987, 1998a, 1999c, 2001b; Sparrius et al. 2002a; McCarthy 2003c, 2006; Tibell & Thor 2003; Nimis & Martellos 2003; Hermansson & Pystina 2004; Tibell & Ryan 2004a; Titov et al. 2004).

Cosmopolitan

Illustrations : Tibell (1987: 52, fig. 29; 1999c: 83); Brodo et al. (2001: 193, pl. 154).

Calicium trabinellum is characterised by: its immersed thallus, the rather small apothecia with a greenish yellow pruina on the lower side of the capitulum, and a spore ornamentation of irregular cracks.