Host: Celmisia Petriei Cheesem. On leaves. Herb. No. 382. Lake Harris track (Otago), 1,100m., W. D. Reid ! 6 May, 1921. (Type.)

0. Spermogones scattered, sparse, seen only in sections.
I. Aecidia hypophyllous, in linear groups, seated on discoloured spots visible on the upper surface, forming conspicuous bullate areas beneath the tomentum of the leaf, long covered. Peridia cylindrical, 0.25 mm. diam., distorted by pressure of the overlying tomentum, margins incurved, deeply and irregularly lacerate, white. Spores elongate-elliptical, or obovate-elliptical; 36-52 X 20-25 mmm.; epispore hyaline, densely covered with deciduous tubercules, 2 mmm. thick, cell-contents granular, orange-yellow.

0. Spermagoniis sparsis, raris. I. Aecidiis hypophyllis, in linearibus catervis, in maculis discoloratis, et bullatis infra tomentum folii diu tectis. Peridiis cylindricis, 0.25 mm. latis, tomento premente distortis, marginibus incurvatis, profundis lace ratis; albis. Aecidiosporis longis-ellipticis vel obovatis-ellipticis, 36-52 X 20-25 mmm.; episporio hyalino, cum solide deciduo tuberculo tecto, 2 mmm. crasso; contentu granuloso, luteo.

The host is endemic, and confined to the mountains of Otago. (Cheeseman, 1906, p. 311.)
This species differs from others on Celmisia on account of the elliptic-oblong spores, and the presence of deciduous tubercules on the epispore. The aecidia are permanently covered by the dense tomentum which clothes the leaf-surface; this soon causes the peridia to become malformed, so that sections of young specimens are necessary to determine the shape and size of the peridium.

Hab.: In foliis vivis Celmisiae Petriei Cheeseman. Lake Harris track, Otago, New Zealand, 1,100 m. W. D. Reid.