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Australian Biological Resources Study

Checklist of the Lichens of Australia and its Island Territories
Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References
Strigula nitidula Mont.

in R. de la Sagra, Hist. Phys. Cuba, Bot., Pl. Cell. 2: 139 (1842)

T: Cuba, R. de la Sagra; holo: PC n.v.; iso: S, UPS n.v.

  Thallus epiphyllous, subcuticular, 5–20 (–30) mm wide, 10–20 µm thick, medium to dark green, often with a distinct metallic sheen, continuous or with radiating or irregular marginal lobes, these often with a thin black border (resembling a less dissected S. subtilissima), the thallus occasionally black-punctate; photobiont Cephaleuros; prothallus not apparent. Perithecia superficial, prominent, verrucose to subconical, not or scarcely covered by a layer of thallus, 0.25–0.55 (–0.65) mm diam., glossy black; walls smooth to radially furrowed. Perithecial apex ±rounded to subacute. Involucrellum black, carbonaceous, extending to exciple base level, 15–35 µm thick. Exciple hyaline to brown, 7–15 µm thick. Centrum 0.15–0.35 mm diam. Paraphyses simple. Asci elongate-cylindrical, 50–80 × 4.0–5.5 µm. Ascospores 1-septate, uniseriate in the ascus, generally fusiform but with rather rounded ends, constricted at the septum, 8–13 × 2.0–3.5 µm; cells frequently separating within the ascus. Conidiomata: 1) semi-immersed, verrucose, glossy black, 0.1–0.2 mm diam., containing simple oblong-ellipsoidal macroconidia 4–6 × 1.5–2.5 µm; 2) semi-immersed, glossy black, 0.05–0.10 (–0.20) mm diam., containing simple fusiform microconidia 4.0–4.5 × 1.0–1.5 (–2.0) µm.
  Common on the leaves of trees and shrubs in northern N.T., eastern Qld, eastern N.S.W. and Tas.; pantropical to temperate (including Lord Howe Island).  

Photo: R. Lücking

  McCarthy (2009b)  

Checklist Index
Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References

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