Flora of New Zealand Series

P. knightiana Müll. Arg., Bull. Soc. r. Bot. Belg. 31: 31 (1892).

P. ceuthocarpa * crenulata Stirton, Proc. phil. Soc. Glasg. 10: 296 (1877).

P. callispora Zahlbr., Denkschr. Akad. Wiss. Wien math.-naturwiss. Kl. 104: 334 (1941).

Lectotype: New Zealand. Colenso 4694 (ex Herb. Hook.), BM! Isotype in H-NYL 22964.

P. knightiana. Holotype: New Zealand. Sine loco (prob. Wellington). Dr Knight, 1883, G 638/2!

P. ceuthocarpa * crenulataid="_ac231fa7-4390-4fb6-a742-b86ed51d57b6"/>. Lectotype: New Zealand. Near Wellington. J. Buchanan Rec'd 13 Sept. 1876, BM!

P. callispora. Holotype: New Zealand. Wellington, Table Top, Tararua Mountains c. 1000 m. Sept. 1933. E. Chamberlain ZA 193, W!

Thallus yellowish-ochre or fawnish or dingy-white, verrucose-areolate to wrinkled-plicate-areolate, areolae convex, separated by shallow to deep cracks, often confluent, in mosaics, 0.5-2.5 cm diam., margins plicateradiating or delimited by a thin, black, wavy line, surface matt to minutely roughened or granular-scabrid to ± wrinkled-puckered, often minutely white-maculate, saxicolous. Fertile verrucae with 1-3 apothecia. Apothecia immersed, ostiole black, punctiform-depressed, minute, surrounded by a zone of pellucid tissue, often ± papillate. Asci 2-spored. Ascospores ellipsoid, contents granular to hyaline, 192-247(-280) × 47-87 µm, wall 8.7-17(-22) µm thick, thickest at apices. Chemistry: K+ yellow → red, C-, KC+ red, Pd+ orange. Norstictic ± connorstictic acids.

N: Wellington. S: Central Otago (Alexandra). On schist rocks, in dry, ± subalpine areas, probably more widely distributed.

Endemic