Thompson, J., 1984. American Arctic Lichens: The Macrolichens.
Primary squamules small to mediumsized, yellow above, white below, esorediate. Podetia cup-forming, the cups goblet-shaped, regular or irregular, imperforate, the margins becoming proliferate; the cortex smooth to rugose and covered with small subglobose yellowish verruculae which appear as tiny squamules, 0.2-0.3 mm long, esorediate. Apothecia red, at the tips of proliferations.
Reactions: K—, C—, KC+ yellowish, P-,UV +.
Contents: usnic and squamatic acids and accessory bellidiflorin.
This species grows on soil. It is a member of the Beringian element which has been reported from Alaska (Krog 1968), Yellowstone Park, Wyoming (Yoshimura 1968), and the Reindeer Reserve. N.W.T. (Ahti et al. 1973). Although Evans had annotated the type material of C. blakei as containing barbatic acid, Yoshimura (1968) found that it contained squamatic acid instead and corrected the Yellowstone material.
C.granulans was originally described from material from Japan and is also known from Kamchatka. It is apparently very close to C. metacorallifera but lacking the didymic acid present in that speices.