Tuck., with much stronger, darker thallus and apothecia on the whole larger.
The colors of the Thallus and apothecia of Lichens—their causes, and the circumstances which modify and alter them.
The position of the apothecia constitutes another distinction.
apothecia seldom round, usually elongated-ellipsoidal, no capillitium.
The apothecia (fig. 7) are stalked and black, but of a lighter colour than the mass of spores forming the nucleus.
