Flora of New Zealand Series

L. nigratula Müll. Arg., Bull. Soc. r. Bot. Belg. 31: 32 (1892).

Holotype: New Zealand. Sine loco. W. Colenso 6524, BM!

Thallus whitish or pale greyish, blotchy, cracked, thin, effuse or lacking. Apothecia few, scattered, minute 0.1-0.6 mm diam., sessile, plane at first with a thin, raised, black margin, becoming convex and immarginate, disc black, matt, epruinose. Epithecium dense, granular, black, 5-8 µm thick. Hymenium pale reddish-brown, 25-33 µm tall. Paraphyses dense, straight, 2 µm thick, apices capitate, brown-black, to 5 µm thick. Ascospores elongate-obovoid to fusiform-ellipsoid, 12-14 × 3.5-4.5 µm.

N: Known only from the type collection.

Endemic

A very small, easily overlooked species on Cordyline bark.