TY - CHAP T1 - The morphological and taxonomic significance of cephalodia T2 - Lichenology: Progress and Problems (Brown, D.H., Hawksworth, D.L. & Bailey, R.H., eds) Y1 - 1976 A1 - James, P.W. A1 - Henssen, A. SP - 27 EP - 77 JF - Lichenology: Progress and Problems (Brown, D.H., Hawksworth, D.L. & Bailey, R.H., eds) PB - Academic Press CY - London etc. ER -