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Lichens (1985) - Flora of New Zealand Lichens
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Arthonia nigrocincta C.Knight & Mitt.

A. nigrocincta Knight et Mitten, Trans. Linn. Soc. Lond. 23: 106 (1860).

Lectotype: New Zealand. Sine loco. Charles Knight 292, 1858, BM!

Thallus pale greyish-yellowish to dull whitish, smooth, shining to roughened-cracked in mosaics to 5 cm diam., delimited by a thin black line. Ascocarps irregular, sessile or ± innate, round to oblong, bent or curved, one end longer, matt, blackish brown. Ascospores obovate, 4-septate, end cell largest.

N: Known only from the type collection ?Auckland.

Endemic

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