Flora of New Zealand Series

≡Peltigera plumbea Mont., Annls Sci. nat. Bot. sér. 2, 4: 87 (1835).

=Nephroma lyallii C.Bab. in J.D. Hooker, Fl. Nov. Zel. 2: 272 (1855).

≡Nephromium lyallii (C.Bab.) Nyl., Syn. meth. lich. 1 (2): 322 (1860).

≡Opisteria lyallii (C.Bab.) Vain., Ark. Bot. 8 (4): 93 (1909).

Nephroma lyallii. Lectotype: New Zealand. North I., Sine loco, W. Colenso 4888 – BM [fide Galloway (1985a: 315)].

Descriptions : Flora (1985: 315 – as Nephroma lyallii); White & James (1988: 151–153).

Chemistry : TLC−, all reactions negative.

N: South Auckland (Raglan, King Country); Gisborne (Urewera National Park); Wellington (Tiritea, Palmerston North). S: Westland (Franz Josef); Otago (Leith Valley, Green Island, Akatore); Southland (Wilmot Pass, Doubtful Sound, Forest Hill, Waihopai Scenic Reserve, Invercargill). St: On twigs in damp shady, humid habitats. Not a common species in New Zealand. Also known from Juan Fernandez and southern Chile (White & James (1988).

Austral

Illustrations : Babington (1855: tab. CXXVIIA – as Nephroma lyallii); White & James (1988: 152, fig. 15A–B).

Nephroma plumbeum is distinguished from other species of Nephroma in New Zealand by the cyanobacterial photobiont; its 1(–3)-septate spores, negative chemistry, and pale blue-grey rather ragged upper surface. Variation is discussed by White & James (1988: 153).