Coenogonium queenslandicum
≡Dimerella queenslandica Kalb & Vězda in A. Vězda & K. Kalb, Nova Hedwigia 53 (1–2): 218 (1991).
Description : Thallus epiphyllous, thin, yellow-grey, continuous opaque, prothallus indistinct but thalli well-delimited, to 1 cm diam. Apothecia hypophyllous-marginal, abundant, 0.5–0.7 mm diam., 0.1–0.15 mm tall, ±persistently plane, pale yellow-brown (yellowish orange), margins indistinct. Exciple moderately thick. Hymenium hyaline to 45 μm tall. Paraphyses 1–1.5 μm diam., apices capitate-swollen to 3–4 μm diam. Asci cylindrical. Ascospores biseriate, 6.5–7.5 × 1.8–2 μm. Pycnidia immersed in thallus, 0.2–0.3 mm diam., verruciform, ostiole punctiform. Conidia cylindrical, 2–2.2 × 0.5–0.7 μm.
S: Nelson (York Valley, Maitai Track). On leaves of Alectryon excelsus. Known also from Australia (McCarthy 2003c, 2006).
Australasian
Illustration : Vězda & Kalb (1991: 222, pl. 3, fig. 2).
Coenogonium queenslandicum is characterised by: the foliicolous habit; the thin, yellow-grey, opaque thallus; hypophyllous marginal, pale yellow-brown, plane apothecia; hymenium to 45 μm tall; and biseriate ascospores, 6.5–7.5 × 1.8– 2 μm.
