Flora of New Zealand Series

A. decedens (Nyl.) Blaha & H.Mayrhofer in J. Blaha, Taxonomische Studien an saxicolen Arten der Flechtengattung Amandinea …:32 (2002).

≡Lecidea decedens Nyl. in W.A. Leighton, Bot. J. Linn. Soc. 10: 31 (1869).

≡Buellia decedens (Nyl.) Müll.Arg., Bull. Herb. Boissier 2, App. 1: 71 (1894).

=Lecidea tubulata C.Knight, Trans. N. Z. Inst. 8: 319 (1876).

≡Blastenia tubulata (C.Knight) Müll.Arg., Bull. Herb. Boissier 2, App. 1: 70 (1894).

≡Rinodina tubulata (C.Knight) Zahlbr., Cat. lich. univ. 7 (4): 558 (1931).

=Buellia cingulata Zahlbr., Denkschr. Akad. Wiss. Wien math.-naturwiss.Kl. 104: 373 (1941).

Lectotype: New Zealand. Wellington, littoral rocks south side of Wellington Harbour, W. Colenso 6543 – BM [fide Blaha (2002: 32)]. Isolectotype – H-NYL 9654, ? WELT.

Lecidea tubulata. Lectotype: New Zealand. Sine loco (probably Wellington), Charles Knight s.n. – BM [fide Mayrhofer (1983: 280)]. Isolectotype – WELT.

Buellia cingulata. Holotype: New Zealand. South Auckland, Coromandel Peninsula, Mt Moehau summit rocks c. 850 m, L.B. Moore ZA271 – W. Isotype – CHR.

Description : Flora (1985: 516 – as Rinodina tubulata).

Chemistry : K+ reddish.

N: Northland (Kawerua, Great Barrier I.), Auckland (Anawhata), South Auckland (Coromandel Peninsula, Slipper I., Whale Bay S of Raglan, Marakopa), Wellington (Titahi Bay, Plimmerton, Cape Palliser). S: Nelson (Cable Bay), Marlborough (NE of Blenheim, NE of Kaikoura), Canterbury (Banks Peninsula, Okains Bay, Otanerito Bay, Little River, Lyttelton Harbour). On coastal rocks. Known also from SE Australia and South Africa (Blaha 2002: 35).

Western Pacific

Illustrations : Knight (1876: pl. X, fig. 12; 1877: pl. XXXVII, fig. 15 – as Lecidea tubulata); Blaha (2002: 25, fig. 6A; 28 fig. 8A, B; 33, fig. 10; 344, figs 11, 12).

Amandinea decedens is characterised by: the saxicolous habit; pruinose apothecia discs; ascospores of Physconia -type without a torus, 19–24 × 12–15 μm; and filiform conidia, 20–25 × 1 μm.