Flora of New Zealand Series

≡Collema contiguum C.Knight & Mitt., Trans. Linn. Soc. 23: 106 (1860).

=Collema subcrispum Nyl., Lich. Nov. Zel.: 8 (1888).

=Collema fuscum Zahlbr., Denkschr. Akad. Wiss. Wien math.-naturwiss. Kl. 104: 268 (1941).

Lectotype: New Zealand. Auckland, on wood, Charles Knight s.n. – BM [fide Degelius (1974: 88)].

Collema subcrispum. Lectotype: New Zealand. Sine loco [probably Wellington], 1867, Charles Knight – H-NYL 41984 [fide Degelius (1974: 88)]. Isolectotypes – PC-HUE, WELT.

Collema fuscum. Holotype: New Zealand. Otago, Otakau Bush, on Melicytus ramiflorus, xii.1933, J.S. Thomson ZA 56 – W. Isotypes – CHR, OTA.

Description : Flora (1985: 137).

N: Auckland, Wellington (Palmerston North, Wellington City). S: Canterbury (Port Hills Christchurch, Acland Falls Peel Forest), Otago (Otakau Bush). Mainly lowland, in shade on mossy bark of both introduced and native trees.

Endemic

Illustration : Knight & Mitten (1860: pl. XII, fig. 35A–E).

Collema fragrans var. contiguum is characterised by: the corticolous habit; a small (1–3 cm diam.) thallus with strongly knotted or isidia-like protuberances on the lobes; crowded, sessile apothecia, with strongly papillate or granular thalline margins; and submuriform ascospores (3–5 × 1–2 septa), 18–32 × 10–13(–17) μm.