304 AUTHORITIES QUOTED. 



NORDST. EOT. NOT. Botaniska Notiser. Edited by C. F. 0. 



Nordstedt. 8vo., 13 vols. Lund, 1871-1884. 

 PERTY KL. LEBENSF. Zur Kenntniss Kleinster Lebensformen 



in der Schweiz, Dr. Maximilian Perty. Folio, 17 plates. 



Berne, 1848. 

 PETIT BULL. Soc. BOT. FR. Sur les Spirogyra, par Paul 



Petit, in Bulletin de la Societe Botanique de France. 



Vol. xx i. Paris. 

 PETIT SPIROGYRA. Spirogyra des Environs de Paris, par Paul 



Petit. Roy. 80., 12 pi. Paris, 1880. 

 PRINGSH. BEITR. Beitrage zur Morphologic und Systematik 



der Alsfen, von Dr. N. Pringsheirn, in Pringsheim 



Jahrbucher. Vols. i., ii. Berlin, 1858, 1860. 

 PRINGSH. JAHRB. Jahrbucher fur Wissenschaftliche Botanik, 



von Dr. N. Pringsheim. 80., 13 vols. Berlin, 



1858-1884. 

 PRITCH. INFUS. A History of Infusoria, including the 



Desmidiaceas and Diatomaceaa, by Andrew Pritchard. 



80., 1 vol., with 40 plates. 4th Edition. London, 



1861. 

 PURT. MIDL. FL. A Botanical description of British Plants 



in the Midland Counties. 2 vols. and supp. Stratford - 



on-Avon, 1817. 

 RABH. ALG. Exs. Algen Europa Exsiccati (dried specimens), 



Dr. Ludw. Rabenhorst. Dresden, 1850-1867. 

 RABH. ALG. EUR. Flora Europaaa Algarum Aquse dulcis et 



submarine. L. Rabenhorst. 3 vols., 80. Leipzig, 



1864. 

 RABH. HEDW. Hedwigia, Ein Notizblat fur Kryptogamische 



Studien. Edited by Dr. L. Rabenhorst. 20 vols. 



Leipzig, 1852-1882. 

 RABH. KRYPT FL. SACHS. Kryptoganien Flora von Sachsen, 



by Dr. L. Rabenhorst. Vol. i. Algen. Leipzig, 1863. 

 RALFS. DESM. The British Desmidieaa, by John Ralfs. 1 vol., 



Roy. 80., with 35 plates. London, 1848. 

 RAY SYN. Johannis Raii Synopsis Methodica Stirpium Britan- 



nicarum. 80. 3rd Edition. London, 1724. 

 REINSCH ALGENFLORA. Algenflora von Mittel-Franken. F. 



Reinsch. 80., 13 pi. Nurnburg, 1867, 

 REINSCH CONTRIB. AD ALG. Contributiones ad Algologiam 



et Fungologiam, auct. P. F. Reinsch. Vol. i. 4o., 



pi. 131. Nuremberg, 1874. 

 RELHAN CANT. Flora Cantabrigiensis, auct. Richardi Relhan, 



A.M. 80., 3 edition. Cambridge, 1820. 

 ROSTAF. & WOR. Ueber Botrydium. granulatum, von J. 



Rostafinski u. M. Woronin. 4o., 5 pi. Leipzig, 1877. 

 ROTH CAT. Catalecta Botanica, ab A. G. Roth, 3 vols., 80, 



Leipzig, 1797. 



