LIST OF PLATES 



II. 

 in. 



IV. 



v. 



VI. 



VII. 



VIII. 



IX. 

 X. 



XL 



XII. 



XIII. 



XIV. 



XV. 

 XVI. 



XVII. 



XVIII. 



XIX. 



XX. 



XXI. 



XXII. 

 XXIII. 



XXIV. 



XXV. 



XXVI. 



XXVII. 



XXVIII. 



XXIX-XLIII. 



XLIV. 



XLV. 

 XLVI. 



XLVII. 



XLVIII-LII. 



LIII. 



Proliferations of 



Drawings illus- 



Holtz, F. L. 



Holtz, F. L. 



Holtz, F. L. 



Holtz, F. L. 



Anatomical detail. 



Anatomical detail. 



Anatomical detail. 



Anatomical detail. 



Ramaley, Francis. The beach at low tide, Vancouver 

 Island, at Minnesota Seaside Station. 



Ramaley, Francis. Egregia menziesii. 



Ramaley, Francis. Egregia menziesii. 

 the lamina. 



Ramaley, Francis. Egregia menziesii. 

 trating anatomical structure. 



Butters, Fred. K. Trichogloea lubrica (Harv.) J. Ag. 



Butters, Fred. K. Trichogloea lubrica (Harv.) J. Ag. 



Holtz, F. L. Photograph of single plant of Pelvetia 

 fastigiata. 



Holtz, F. L. Photograph showing bed of Pelvetia fas- 

 tigiata on the rocks at Port Renfrew, exposed at ebb 

 tide. 



Pelvetia fastigiata. 



Pelvetia fastigiata. 

 Pelvetia fastigiata. 

 Pelvetia fastigiata. 



Hone, Daisy S. Petalonema alatum. 



Nelson, N. P. B. Aphanizomenon flos-aquae, Anabaena 

 circinalis and Anabaena flos-aquae. 



Hillesheim, Catherine. Forms of fresh-water algae. 



Crosby, Caroline M. Dictyosphaeria favulosa. 



Brand, Charles J. Stapfia cylindrica. 



Powell, Chalmer. Algae forming calcareous pebbles. 



Powell, Chalmer. Calcareous pebbles. 



Lilley, Gene. Nitella batrachosperma. 



Cardot, Jules. Catharinaea macmillani. 



Cardot, Jules. Bryum minnesotense, Amblystegium 

 brevipes, and A. brachyphyllum. 



Cardot, Jules. Bryum holzingeri and Fontinalis holz- 

 ingeri. 



Cardot, Jules. Fontinalis umbachi and F. obscura. 



Schrader, Herman F. Postelsia Point at Minnesota Sea- 

 side Station — showing Postelsia palmaeformis, Alaria 

 and other surf plants. 



Schrader, Herman F. Alaria nana sp. nov. 



Schrader, Herman F. Alaria nana sp. nov. 



Schrader, Herman F. Alaria nana sp. nov. 



Rosendahl, C. O. Razoumofskya tsugensis sp. nov. 



Rosendahl, C. O. Razoumofskya tsugensis sp. nov. 



Lyon, Harold L. Embryogeny of Ginkgo. 



Leavitt, Clara K. Callymenia phyllophora J. Ag. f. or- 

 bicularis. 



Leavitt, Clara K. Parasitic Rhodophyceae. 



Warner, Florence M. Endocladia muricata (P. and R.) 

 J- Ag. 



Mueller, Olga. Laminaria bullata Kjellm. 



Hone, Daisy S. Minnesota Helvellineae. 



Polley, Jessie M. Physalacria inflata (S.) Peck. 



