Chroolepoid, like the genus Chroolepis (Trentepohlia).
Chrysogonidia, yellow algal cells (Trentepohlia).
Cilium, hair-like outgrowth from surface or margin of thallus, or margin of apothecium, [91].
Consortium (consortism), mutual association of fungus and alga (Reinke); also termed “mutualism,” [31], [313].
Corticolous, living on the bark of trees, [363].
Crustaceous, crust-like closely adhering thallus, [70-79].
Cyphella, minute cup-like depression on the under surface of the thallus (Sticta, etc.), [11], [126].
Decomposed, term applied to cortex formed of gelatinous indistinct hyphae (amorphous), [73-81] et passim, [357].
Determinate, thallus with a definite outline, [72].
Dimidiate, term applied to the perithecium, when the outer wall covers only the upper portion, [159].