Flora of New Zealand Series

L. epibryon (Ach.) Ach.,broccha Lichenogr. universalis: 396 (1810). ssp. (Nyl.) Lumbsch in Lumbsch et al. Pl. Syst. Evol. 191: 229 (1994).

≡Lecanora broccha Nyl. in Cromb., Bot. J. Linn. Soc. 15: 185 (1876).

=Lecanora parmelina Zahlbr., Denkschr. Akad. Wiss. Wien math.-naturwiss. Kl. 104: 341 (1941).

Lecanora parmelina. Lectotype: New Zealand. Marlborough, Mt Tapuaenuku, Inland Kaikoura Ra., c. 1200 m, on dead stumps of tussock grass, J.S. Thomson T 1524 [ZA271] – CHR 375801 [fide Galloway (1985a: 213)]. Isolectotype – OTA.

Description : Flora (1985: 213 – as Lecanora broccha). See also Lumbsch (1994: 87–88).

Chemistry : Major compounds: ±atranorin, ±barbatic, stictic, ±norstictic acids and ±2,5,7-trichloro- O- methylnorlichexanthone. Minor compounds: ±atranorin, ±chloroatranorin, ±con-norstictic, constictic, cryptostictic, menegazziaic, ±norstictic, ±lecanoric, ±gyrophoric, ±4- O- demethylbarbatic acids and ±methyl barbatate, ±methyl β-orsellinate, ±5,7-dichloro-3- O- methyl-norlichexanthone, ±2,5,7-trichloro-3- O- methylnorlichexanthone, ±3- O- methylasemone, ±2,5,7-trichlorolichexanthone and ±ursolic acid (Elix et al. 1989; Lumbsch 1994; Lumbsch et al. 1994b; Guderley 1999).

N: Wellington (Ruahine Ra.). S: Nelson (Mt Arthur, Cobb Valley, St Arnaud Ra., Roding River, Island Saddle), Marlborough (Mt Weld,) Canterbury (Mt Trovatore, Cass, Craigieburn Ra., Torlesse Ra.) to Otago (Forgotten River, Queenstown Hill, Arrowtown, Alexandra, Lake Onslow, Mt Benger, Old Man Ra., Umbrella Mts, Rock & Pillar Ra., Lee Stream, Maungatua). On dead tussock bases (especially of Poa), mainly E of the Main Divide in subalpine to high-alpine grasslands and herbfield. Also in Papua New Guinea, SE Australia (including Tasmania) and southern South America in Chile and Argentina, in the Falkland Is, and Kerguelen (Lumbsch 1994; Lumbsch et al. 1994b; Guderley 1999: 191; Galloway & Quilhot 1999; Calvelo & Liberatore 2001; McCarthy 2003c, 2006; Lumbsch & Elix 2004).

Austral

Illustrations : Malcolm & Malcolm (1989: 91 – as Lecanora broccha; 2000: 56); Elix et al. (1989: 171, fig. 1A, B – as Lecanora broccha); Lumbsch (1994: 84, fig. 57E, F); Malcolm & Galloway (1997: 69, 100, 165); Guderley (1999: 187, fig. 15C); Lumbsch et al. (2001a: 27); Parkinson (2001: 181); Flora of Australia Vol. 56A (xiii, pl. 11).

Lecanora epibryon ssp. broccha is characterised by: the graminicolous habit (dead tussock bases); the thin, whitish thallus of dispersed verrucae; prominent sessile apothecia, constricted at base, 0.8–2.5 mm diam., the disc red-brown to brown-black, intensely dark-brown when moist, epruinose, the thalline exciple, prominent, white, smooth, entire, crenulate, flexuose; amphithecium with small crystals (allophana -type); a colourless hymenium inspersed with small oil droplets, 55–80 μm tall; ellipsoidal ascospores, 12–17.5 × 6.5–9.5 μm; and a chemistry of atranorin, and the stictic acid, and 2,5,7-trichloro-3- O- methylnorlichexanthone chemosyndromes.