Flora of New Zealand Series

R. tubulata (Knight) Zahlbr., Cat. lich. univ. 7: 558 (1931).

* Account prepared by Dr H. Mayrhofer (Graz).

Lecidea tubulata Knight, T.N.Z.I. 8: 319 (1876).

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

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

Lectotype: New Zealand. Sine loco (prob. Wellington). Charles Knight, BM!

Lecidea decedens. Holotype: New Zealand. Wellington, littoral rocks south side of Wellington Harbour. W. Colenso 6543, BM!

Buellia cingulata. Holotype: New Zealand. South Auckland, Coromandel Peninsula, Mt Moehau, summit rocks c. 850 m. L.B. Moore ZA 271, W.

Thallus thin or evanescent, whitish to pale grey, areolate, saxicolous. Apothecia lecideine, sessile, solitary or frequent and contiguous, to 0.8 mm diam., disc plane to subconvex, black, with a grey-white pruina. Excipulum blackish. Hymenium 90-100 µm tall. Epihymenium dark brown. Hypothecium dark brown. Ascospores of Physconia -type, 19-24 × 12-15 µm, wall warted. Chemistry: K+ reddish.

N: South Auckland (Coromandel Peninsula), Wellington (Titahi Bay). S: Canterbury (Banks Peninsula). On coastal rocks.

Endemic