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Lichens (1985) - Flora of New Zealand Lichens
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Thelidium calcareum (C.Knight) Hellb.

T. calcareum (Knight) Hellbom, Bihang K. Sv. Vet.-Akad. Handl. 21 (3) 13: 136 (1896).

Verrucaria calcarea Knight, T.N.Z.I. (Bot.) 15: 356 (1883).

V. calcicola Nyl., Lich. N.Z.: 127 (1888).

Holotype: New Zealand, Sine loco. Charles Knight, WELT. Isotype in BM!

Verrucaria calcicola. Type: New Zealand. Sine loco. Charles Knight, H-NYL - not seen.

Thallus dark olivaceous to blackish-brown, thin, irregularly spreading, effuse or wanting, often rather abraded, saxicolous. Perithecia black, minute, to 0.25 mm diam., sessile, convex, ostiole simple, minute, excipulum black. Ascospores 1-septate, colourless 14-18 × 7-9 µm.

N: South Auckland (Pio Pio) to Wellington. S: Canterbury (Weka Pass, Castle Hill, Mt Somers), Otago (Maheno, Oamaru), Southland (Clifden). On limestone rocks, often giving a rather greyish colour to stone; widespread.

Endemic

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