Flora of New Zealand Series

Description : Flora (1985: 175–176).

Chemistry : TLC−, all reactions negative.

S: Nelson (Motupiko). Collected only once, from bark of Crataegus monogyna (A.J. Healy CHR). Known also from the United States, Brazil, Argentina, Costa Rica, Socotra, Zanzibar, India, Japan, Hawai'i, Thailand, Indonesia, Papua New Guinea, New Caledonia, Queensland, New South Wales, Lord Howe I., Tasmania (Nakanishi 1966; Hayward 1977; Wirth & Hale 1978; Awasthi 1991; Esslinger & Egan 1995; Archer 2001b; Wolseley et al. 2002; Staiger 2002; McCarthy 2003c, 2006).

Pantropical

Illustrations : Nakanishi (1966: 67, fig. 4E–H; pl. I, fig. 7); Hayward (1977: 572, fig. 6B; 575, fig. 8C).

Graphis tenella is characterised by: the corticolous habit; the thin, smooth to minutely roughened, grey-white thallus; short, flexuose lirellae, 1–2 mm long; 6–8-locular ascospores, 20–30 × 5–7 μm; and a negative chemistry.