A SYSTEMATIC ARRANGEMENT OF BRITISH PLANTS; WITH AN EASY INTRODUCTION TO THE STUDY OF BOTANY. ILLUSTRATED BY COPPER-PLATES. BY WILLIAM WITHERING, M.D. F.R.S. THE FOURTH EDITION, IN FOUR VOLUMES: CORRECTED AND ENLARGED BY WILLIAM WITHERING, ESQ. Fellow of the Linnean Society, &c. "Primus gradus sapientiæ est res ipsas nosse. LINN. "Increscunt quotannis Scientiæ, emendantur quotidie, et ad fastigium VOL. IV. LONDON: PRINTED FOR T. CADELL, JUN. AND W. DAVIES, G. AND J. |