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Annual Eep. qeol. Survey of Indiana , Indianapolis 1819, pag. 

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Chickering, J. W. Catalogue of phaenogamous and vascular cryptoga- 

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Cartiss, A. W. Vegetation of the Shell islands of Florida. 

 Botan. Gazette, febr. 1879. 



C. Gard. Chron., Vol. XII, 1879, pag. 435. 

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DawsOQ . G. M. Exploration from Port Simpson on the pacific coast to 

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Drummond, A. T. Canadian timber-trees, their distribution and preser- 

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Engelmann, C. Botany of California. Vol. II. 

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Finck, H. Acerca de alcunas plantas del distrito de Cordoba. 

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Fletcher, H. Exploration in Richmond, Inferness, Guysboro and Anti- 

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Gaertner, R. Reiseskizzen aus Amerika als Beitrag zum Lobe der 

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Gibson, J. and Macoun, J. Synopsi.s of the flora of the valley of the 

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Gray , A. Ueber die Flora Nord-Amerika's. 

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Calluna vulgaris Salisb., the ling or heather, rediscovered in 



Massachusets. 



American. Natiiral., Vol. X, 1876, pag . 489. 



Grifflth, C. Aspidium aculeatum in Pennsylvanien. 

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C. Bot. Jahresber., 1879, pag. 421. 



Hayden, F. V. Tenth annual Report of the Unit. Stat. geol. and geogr. 

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C- Proc. r. geogr. Soc London , 1879 , pag. 285. 



