XLVI.—On Cyclostigma, a new genus of fossil plants from the Old Red Sandstone of Kiltorcan, co. Kilkenny; and on the general law of phyllotaxis in the natural orders Lycopodiaceæ, Equisetaceæ, Filices, &c
Published in Annals And Magazine of Natural History, in 1860, in volume 5, pages 433-445
Date published:1860