Pertusaria lophocarpa
=Pertusaria superba Zahlbr., Denkschr. Akad. Wiss. Wien math.-naturwiss. Kl. 104: 332 (1941).
=Pertusaria dunedina Zahlbr., Denkschr. Akad. Wiss. Wien math.-naturwiss. Kl. 104: 335 (1941).
Pertusaria superba. Lectotype: New Zealand. Otago, Maungatua, summit rocks, c. 900 m, iv.1934, J.S. Thomson T1373 [ZA 287] – W [fide Galloway (1985a: 380)]. Isolectotypes – CHR 374720, OTA 30273.
Pertusaria dunedina. Holotype: New Zealand. Otago, Flagstaff Hill, Dunedin, xii.1934, J.S. Thomson T1751 [ZA 679] – W [erroneously designated lectotype in Galloway (1985a: 380)]. Isotypes – CHR 374718, OTA 047801.
Description : Flora (1985: 380 – as Pertusaria superba).
Chemistry : K−, KC−, C−, Pd−; containing 4,5-dichlorolichexanthone (major), 2'- O -methylperlatolic acid (major), ±confluentic acid (minor) or rarely with 2- O -methylperlatolic acid (minor) replacing confluentic acid (Archer 1997: 96).
S: Canterbury (Port Hills, Banks Peninsula), Otago (Herbert State Forest, Maungatua, Flagstaff). C: M: On subalpine rocks in grassland, s.l. to 1500 m. Also known in SE Australia (South Australia, Victoria, New South Wales, Australian Capital Territory) and Tasmania (Archer 1991b: 173, 1997: 96, 97. 2004a: 144–145; McCarthy 2003c, 2006).
Australasian
Illustrations : Archer (1997: 106, fig. 31); Malcolm & Galloway (1997: 103); Flora of Australia56A (2004: 104, pl. 45).
Pertusaria lophocarpa resembles P. subverrucosa Nyl., but is distinguished from it by the larger ostioles, the number of ascospores (8-spored in P. lophocarpa; 2-spored in P. subverrucosa) and the K reaction (P. subverrucosa reacts K+ red because of the presence of norstictic acid; P. lophocarpa reacts K−).
