Flora of New Zealand Series

≡Lecidea maculosa Stirt., Rep. Trans. Glasgow Soc. Field Nat. 1: 19 (1873).

≡Patellaria maculosa (Stirt.) Müll.Arg., Bull. Herb. Boissier 2, App. 1: 63 (1894).

≡Biatorina maculosa (Stirt.) Hellb., Bihang K. Sv. Vet.-Akad. Handl. 21 (3/13): 108 (1896).

≡Catillaria maculosa (Stirt.) Zahlbr., Cat. lich. univ. 4 (1): 19 (1926).

Lectotype: New Zealand. Near Wellington, J. Buchanan 184 – BM [fide Galloway (1985a: 77)]. Isolectotype – WELT.

Description : Flora (1985: 77).

N: Northland (Radar Bush), South Auckland (Kopu, Coromandel Peninsula), Wellington.

Endemic

Megalaria maculosa is characterised by: the corticolous habit; the grey-white to greenish grey, roughened–verrucose thallus, delimited by a thin, wavy, black prothallus; coal-black, epruinose sessile apothecia, 0.1–1.5 mm diam.; a blue-black epithecium 8–10(–30) μm thick; a colourless to pale red-brown hypothecium, 55 μm thick; and broadly oval ascospores, 13–17(–19) × (6.5–)8–9 μm.