Porina elegantula
Description : Thallus epiphloeodal, continuous, pale to medium grey-green, matt, smooth to minutely uneven, 20–40 μm thick, ecorticate, prothallus not apparent. Perithecia ⅓ immersed, hemispherical to superficial and subglobose, 0.17–0.3 mm diam., dull orange-brown to red-brown, apex rounded, ostiole inconspicuous or in a papilla 20–30 μm wide. Involucrellum contiguous with exciple, sometimes incurved below, 20–40 μm thick, containing photobiont cells, K−. Centrum 0.13–0.19 mm wide. Exciple 10–15 μm thick, hyaline to pale yellow-brown, Asci narrowly cylindrical to narrowly obclavate, 70–85 × 7–8.5 μm. Ascospores filiform to acicular, (11–)13–19(–21)-septate, 42–65 × 2–3 μm, without a perispore. Pycnidia not seen.
S: Westland (Alexander Ra. Camp Creek). On smooth bark of Weinmannia racemosa (Setzepfand & Sipman 2004). Known also from Australia (McCarthy 2001f, 2003c, 2006).
Australasian
Illustration : McCarthy (2001f: 131, fig. 24).
Porina elegantula is characterised by: the corticolous habit; dull orange-brown to red-brown perithecia, ⅓ immersed, hemispherical to superficial and subglobose, 0.17–0.3 mm diam.; and filiform to acicular ascospores, (11–)13–19(–21)-septate, 42–65 × 2–3 μm, without a perispore.
