Flora of New Zealand Series

A. subbiformis (Knight) Müll. Arg., Bull. Herb. Boissier 2, App. 1: 90 (1894).

Verrucaria subbiformis Knight, T.N.Z.I. 8: 326 (1876).

V. pruinogrisea Knight V. pruinogrisea Knight T.N.Z.I. 8: 326 (1876).

Lectotype: New Zealand. Sine loco (?Wellington). Charles Knight (ex Herb. J.M. Crombie), BM!

Verrucaria pruinogrisea. Type: New Zealand. Sine loco (prob. Wellington). Charles Knight, WELT - not seen.

Thallus white, effuse, uneven, in spreading patches 2-4 cm diam., smooth, ± cobwebby, continuous to ± cracked, rather indeterminate at margins, not delimited by a black line of prothallus, corticolous. Perithecia frequent, scattered, solitary to ± confluent, 0.1-0.5 mm diam., carbonaceous, shining, not or rarely covered by a thin veil of cortex, black, subglobose, entire, leaving small black-edged pits. Ascospores oblong, 1-septate, 20 × 7 µm.

N: Known only from the type collection.

Endemic