M. Porter

CARDUUS CINEREUS (ASTERACEAE) – NEW TO NORTH AMERICA

D. Kelch, J. Gaskin, A. Susanna, 2020, Madroño.

The its Region of Nuclear Ribosomal DNA: A Valuable Source of Evidence on Angiosperm Phylogeny

Michael J. Sanderson, Michael J. Donoghue, M. Donoghue, 2010 .

The occurrence in Britain of Carex cespitosa, a Eurasian sedge rare in western Europe

T. James, P. Jiménez‐Mejías, M. Porter, 2012 .