Note 16 — FLORA OF THE PRIMARY OR PALÆOZOIC PERIOD.
Reading edition
See Professor Duns on the association of Cardiocarpum with Sphenopteris. Proc. R.S.E., April 1, 1872.
Reading edition
See Professor Duns on the association of Cardiocarpum with Sphenopteris. Proc. R.S.E., April 1, 1872.