Flora of New Zealand Series

≡Parmelia flavescentiregens Gyeln., Reprium Spec. nov. Regni veg. 36: 154 (1934).

Description : Flora (1985: 611–612).

Chemistry : Cortex K−; medulla K−, C−, KC+ rose-pink, Pd−; containing usnic acid, loxodin, norlobaridone, ±constipatic acid, ±protoconstipatic acid, ±scabrosin 4,4'-diacetate, ±scabrosin 4-acetate 4'-butyrate, ±scabrosin 4-acetate 4'-hexanoate, ±scabrosin 4,4'-dibutyrate, ±conloxodin, ±connorlobaridone (Elix 1994s: 243).

N: Auckland (Anawhata, Waiheke I.), South Auckland (Stony Bay, Coromandel Peninsula), Hawke's Bay (Taradale). S: Nelson (Puponga), Marlborough (Wither Hills, Wairau R., Avon Valley, Kaikoura), Canterbury (Rangitata Gorge, Tekapo, Lake Ohau, N of Hakataramea Pass), Otago (Lindis River near Cluden, Luggate, Alexandra, Ranfurly, Mt Trotter, Macrae's Hill). Mainly saxicolous on schist rocks, also on pebbles and soil in landslips, riverbeds, lowland to alpine, rarely on wood. Known also from Australia, Tasmania and Peru (Hale 1990; Elix 1994s: 243; McCarthy 2003c, 2006).

Australasian

Illustrations : Filson & Rogers (1979: pl. 11C – as Parmelia furcata); Galloway (1981a: 533, fig. 4D); Hale (1990: 118, fig. 41A); Kantvilas et al. (2002: 66).

Xanthoparmelia flavescentireagens is characterised by: the saxicolous habit; the loosely to moderately adnate lobes; an ivory to brown lower surface; an absence of isidia; and the presence of loxodin and lorlobaridone in the medulla (KC+ pink).