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BRITISH FLORA: 



COMPraSING THE 



PHJ]r^OGAMOUS OR ELO¥ERING PLANTS, 



AND THE PERNS. 



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WITH ADDITIONS AND CORRECTIONS, 



AND NUMEROUS FIGURES ILLUSTRATIVE OF 



UMBELLIFEROUS 



PLANTS, THK COMPOSITE PLANTS, THE GRASSES, 



AND THE FERNS ; 



SIR WILLIAM JACKSON HOOKER, 



K.H, D.C.L. OXON. LL.D, F.R.A. & L.S. ; 



AND DIRECTOR OF THE ROYAL BOTANIC GARDENS OF KEW ; 



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AND 



GEORGE A. WALKER ARNOTT, 



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LL.D. F.L.S. & R.S.E., 



AND REGIUS PROFESSOR OF BOTANY IN THE UNIVERSITY OF GLASGOW. 



LONDON: 



LONGMAN, BROWN, GREEN, AND LONGMANS 



1855. 



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