Flora of New Zealand Series

Parmelia tenuirima var. labrosa Zahlbr., Denkschr. Akad. Wiss. Wien math.-naturwiss. Kl. 104: 356 (1941).

Lectotype (fide Hale, p. 35): New Zealand. Otago, Saddle Hill, on Pinus. J.S. Thompson V34, W.

Thallus closely attached, to 10 cm diam., corticolous or lignicolous. Lobes rounded, subirregular to 8 mm wide. Upper surface plane to wrinkled, faveolate, shining or rather waxy, greyish-fawn to greenish or buff, sorediate. Soralia laminal, rarely marginal, white or yellowish becoming grey-brown with age, originating from coarse, pustular ridges, becoming irregular-diffuse. Lower surface black, with a narrow, brown, naked marginal zone. Rhizines numerous, simple, black. Apothecia sessile, disc brown, thalline margin entire, sorediate. Ascospores 5-7 × 10-12 µm. Chemistry: Cortex K+ yellow; medulla K-, C+ red, KC+ red, Pd-. Lecanoric acid and atranorin.

S: Canterbury (Banks Peninsula, Prices Valley, Springston, Rakaia River), Otago (Cameron Flat, Makarora, Dunedin), Southland (Queens Park, Invercargill). On the bark of introduced and native trees and on decorticated wood (fenceposts etc.) Still poorly collected and understood.

Austral