136 ALGAE IN PHYTOPLANKTON OF THE UNITED STATES 



Lagerheim, G., 1882, Bidrag till kannendomen om Stockholmstrakens Pediastreer, Pro- 



tococcaceer och Palmellaceer: Ofvers. Kgl. Svensk.-Ak. Forh, v. 39, no. 2, p. 47-81. 

 Lefevre, M., 1932, Monographie des especes d'eau douce de genre Peridinium: Archives 



de Bot., v. 2, p. 1-210. 

 Lemmermann, E., 1898, Beitrage zur Kenntnis der Planktonalgen. I. Golenkinia Chodat, 



Richteriella Lemm., Franceia nov. gen., Phythelios Frenzel. Lagerheimia Chodat, 



Chodatella nov. gen., Schroederia nov. gen.: Hedwigia, v. 37, p. 303-312. 



1899, Das Genus Ophiocytium Naegeli: Hedwigia, v. 38, p. 20-38. 



Lyngbye, H. C., 1819, Tentamen Hydrophytologiae Danicae: Kjobenhaun. 



Meister, F., 1912, Die Kieselalgen der Schweiz: Beitr. Kryptogamenfl. Schweiz., v. 4, p. 



1-254. 

 Meneghini, G., 1837, Conspectus algologiae euganeae: Patavia, 37 p. 

 Meyen, F. J., 1829, Beobachtungen uber einige niedere Algenformen: Nova Acta Acad. 



Caes. Leop.-Carol., v. 14, p. 768-778. 

 1839, Jahresberichte uber die Resultate der Arabeiten im felde der 



physiologischen Botanik von dem Jahre 1838: Arch, fur Naturg., v. 2, p. 1-153. 

 Morren, Charles, 1830, Memoire sur un vegetal microscopique d'un nouveau genre, pro- 

 pose sous le nomme Microsoter, ou conservateur des petites choses: Annals of 



Science in Naturale Botonicae, v. 20, p. 404-426. 

 1838, Recherches physiologiques sur les hydrophytes de la Belgique. Premier 



Memoire. Histoire d'un genre nouveau de la tribu Confervees, nomme par l'auteur, 



Aphanizomene: Memoire Akadamie Royale Belguque, v. 11, p. 5-20. 

 Nageli, C. W., 1849, Gattungen einzelligen Algen, physiologische und systematische 



bearbeitet: Zurich, 137 p. 

 1855, in Braun, Algarum unicellularum genera nova vel minus cognita: Leipzig, 



111 p. 

 Office of Water Research and Technology, 1976, Algal abstracts- A guide to the 



literature, Volume 3: 1972-1974: New York, IFI/Plenum Data Company, 890 p. 

 Office of Water Resources Research, 1973a, Algal abstracts- A guide to the literature, 



Volume 1: to 1969: New York, IFI/Plenum Data Corporation, 585 p. 

 1973b, Algal abstracts-A guide to the literature, Volume 2: 1970-1972: New 



York, IFI/Plenum Data Corporation, 693 p. 

 Pascher, A., 1913, Zur Gliederung der Heterokonten: Hedwigia, v. 53, p. 6-22. 

 1927, Volvacales-Phytomonadinae, in Pascher, A., Die Siisswasserflora 



Deutschlands, Osterreichs, und der Schweiz, Heft 4: Jena, p. 1-506. 

 1943, Zur Kenntnis verschiedener Ausbildungen der planktonischen Dinobryon: 



Inter. Rev. Gesamt. Hydrobiol. Hydrograph, v. 43, p. 110-123. 

 Patrick, Ruth, 1948, Factors affecting the distribution of diatoms: Botanical Review, v. 



14, p. 473-524. 

 1949, A proposed biological measure of stream conditions, based on a survey of the 



Conestoga Basin, Lancaster County, Pennsylvania: Proceedings of Academy of 



Natural Sciences of Philadelphia, v. 101, p. 277-347. 

 -1973, Use of algae, especially diatoms, in the assessment of water quality: 



Philadelphia, American Society for Testing and Materials, ASTM STP 528, p. 76-95. 

 Patrick, Ruth, and Reimer, C. W., 1966, The diatoms of the United States exclusive of 



Alaska and Hawaii, Volume 1: Fragilariaceae, Eunotiaceae, Achnanthaceae, 



Naviculaceae: Philadelphia, Monographs of the Academy of Natural Sciences of 



Philadelphia, number 13, 688 p. 

 Prescott, G. W. 1962, Algae of the western Great Lakes area with an illustrated key to 



the genera of desmids and freshwater diatoms: Dubuque, Iowa, William C. Brown 



Co., 977 p. 

 -1968, The algae: A review: Boston, Houghton Mifflin Co., 436 p. 



