THE GREEN ALGAE OF NORTH AMERICA 95 



Hill, G. H. 1916. Spirogyra gigantica n. sp. Puget Sound 



Marine Station Publ., Vol. I, p. 198. 

 191 6a. Origin of the second spiral in Spirogyra lutetiana. 



Puget Sound Marine Station Publ., Vol. I, p. 247. 

 Howe, M. A. 1914. The marine algae of Peru. Mem. Torrey 



Bot. Club, Vol. XV, p. i. 

 Howe, M. A. & Hoyt, W. D. 1916. Notes on some marine 



algae from the vicinity of Beaufort, N. C. Mem. N. Y. 



Bot. Garden, Vol. VI, p. 105. 

 Kurd, A. M. 1916. Codium dimorphum. Puget Sound 



Marine Station Publ., Vol. I, p. 211. 

 Kindle, E. M. 1915. Limestone solution in the bottom of 



Lake Ontario. Amer. Jour. Sci., Vol. XXXIX, p. 



651- 

 Kirchner, O. 1880. Beitrage zur Algenflora von Wiirttem- 



berg. Jahresh. Vereins fur Vaterlandischer Natur- 



kunde, Vol. XXXVI, p. 155. 

 Kjellman, F. R. iSgjb. Marina Chlorophyceer fran Japan. 



Bih. Kgl. Svensk. Akad. Handl. Stockholm, Vol. 



XXII, No. ii. 

 Kofoid, C. A. 1914. Phytomorula regularis, a symmetrical 



protophyte related to Coelastrum. Univ. Calif. Publ., 



Bot., Vol. VI, p. 35. 

 Kutzing, F. T. 1857. Tabulae Phycologicae, Vol. VII. 



1858. Tabulae Phycologicae, Vol. VIII. 

 Lagerheim, G. von. 1888. Sopra alcune alghe nuove o rimar- 



chevole. Notarisia. 

 i895a. Studien u'ber die arktische Cryptogamen. I. 



Tromso Mus. Aarsheft., Vol. XVII, p. i. 

 Lemmermann, E. iSgSc. Beitrage zur Kentniss der Plank- 



tonalgen, II. Bot. Centralblatt, Vol. LXXVI, p. 150. 

 18993. Correction of date for 18983, in Collins, 1909. 

 1900. Beitrage zur Kentniss der Planktonalgen, VI. Ber. 



Deutsch. Bot. Ges., Vol. XVIII, p. 94. 



1903. Beitrage zur Kentniss der Planktonalgen, XVI. 

 Bot. Notiser, p. 95. 



1904. Das Plankton schwedischer Gewasser. Arkiv. for 

 Bot., Vol. II, No. 2, p. i. 



