BY MAK.TORIK ISABEL COLLINS. 209 



LITERATURE CITED. 



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Sand Dunes <»f I^ake Michigan. "' iiotanical (ia/ctte. xxvii.. Nos. "2, 

 3, 4. 5, 1899. 



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Soc. (2) iii.. 1S9-2. 



3. OsBORN. T. (r. B. — " Types of Vegetation on the Coast in the Neicfh- 



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5. Vesqfe. — "The Anatomy of (i'oofh)ii(i omla." Ann. Sci. Xat., Hot., 



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6. VoLKENS, Ct. -" Ueber Pflanzen mit lackirten IJliittern." Her. der. 



Deutsch. Hot. Resell., 1890. 



