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11. — The probable influenae of disturbed nutrition on the evolution of the vege- 



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12. Au trän, E., et Durand, Th. Hortus Boissierianus. Enumeration des plantes 



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Prefaee par F. Crepin. 572 pp. Geneve et Bäle. (Ref. 269.) 

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17. Bishop, J. N. A catalogue of all phaenogamous and vascular cryptogamous 



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21. Filices in Th. Durand et H. Pittier: Primitiae Florae Costaricensis, 

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22. Boullu. Scolopendrium ä fronde munie de sores sur les deux faces. (Ann, Soc. 



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28. Burbidge, F. W. AzoUa filiculoides. (G. Chr., XX, 248.) (Ref. 277.) 



29. Celakovsky, L. J. Leber den phylogenetischen Entwicklungsgang der Blüthe 



27* 



