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Verrucaria maura Wahlenb.


Thallus extensive, black, cracked-areolate, matt and minutely dotted; perithecia up to half-projecting above the surfaces of the areoles, conical. Often dominant on coastal rocks, forming a zone at and above the high water mark, very common except in the south east.

Refs: Smith et al. (2009), 951; Purvis et al. (1992), 639; Orange (2008); Dobson (2005), 450-1 (photo); Dobson (2011), 457 (photo); Whelan (2011), 150 (photo); van Herk & Aptroot (2004, 2013), 384-5 (photo); Wirth, Hauck & Schulz (2013), 1: 521 (photo, as Hydropunctaria maura), 2: 1149; Moberg & Holmåson (1984), 215 (photo); Stenroos et al. (2011), 486 (photo); Brodo et al. (2001), 728 (photo); Thomson (1997), 638.

The commonest of a group of recently recognised, closely similar species, now separated into the genus Hydropunctaria (Orange, (2012), Lichenologist 44: 299–320). The photographs below appear to represent true H. maura. At present I am keeping the generic splits of Verrucaria together in the one genus, pending a clearer overall taxonomy.

FGBI: http://fungi.myspecies.info/all-fungi/hydropunctaria-maura (as Hydropunctaria maura)

 
Verrucaria maura
Verrucaria maura, magnified view
On coastal rocks, Kennedy's Pass, Ayrshire, May 2008


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Uploaded September 2008, last updated January 2016