NITELLA FLEXILIS. 103 



GANTERER Osterr. Char. p. 8 (1847). 



BABINGTON in Ann. & Mag. Nat. Hist. ser. 2, Y, p. 83 (1850). 



C. inermis pellucida SCHMIEDEL Icones, p. 53, t. 14 (1762). 

 C.furcidata REICHENBACH in Mossier, Handb. ed. 3, III, p. 1664 (1834) 



C. Brongniartiaua COSSON, GERMAIN & WEDDELL Intr. Fl. Par. p. 152 



(1842). 

 C. commutata RUPRECHT Symb. Hist. PL Boss. p. 77 (1845). 



Nitella flex His AGARDH Syst, Alg. p. 124 (1824). 



KUTZING Phyc. Germ. p. 256 (1845); Sp. Alg. p. 514 (1849); Tab. 



Phyc. VII, t, 32. f. 2 (1857). 



RABENHORST Deutsch. Krypt, Fl. II, p. 195 (1847). 

 BRAUN in N. Denks. Schweiz. Ges. Naturw. X, p. 8 (1849) ; in Cohn, 



Krypt, FL Schles. I. p. 397 (1876). 



WALLMAX F6rs6k syst. Charac. p. 33 (1853) ; Transl. p. 28 (1856). 

 WAHLSTEDT Bidrag Skand. Charac. p. 4 (1862) ; Mon. Sver. & Norg. 



Charac. p. 16 (1875). 



CREPIN in Bull. Soc. Bot. Belg. II, p 129 (1863). 

 LEONHARDI in Verh. Naturf. ver. Brimn, II, p. 168 (1864). 

 LANGE in Flora Danica, t, 2799 (1869). 

 GROVES in Journ. Bot. XVIII, p. 166, t. 210, f. 18 (1880). 

 MULLER in Bull. Soc. Bot. Geneve, II. p. 51 (1881). 

 BRAUN & NORDSTEDT Fragm. Mon. Charac. p. 34 (1882). 

 SYDOW Europ. Charac. p. 17 (1882). 

 BOSWELL Engl. Bot. ed. 3, XII, p. 174* (1884). 

 MIGULA Die Characeen, p. 132, f. 37, 38 (1890) ; Syn. Charac. Europ. 



p. 34, f. 25, 26 (1898). 



HOLTZ Characeen, in Krypt. Mark-Brandenb. p. 72 (1903). 

 PROSPER Carofit, Espan. p. 67, f. 10s (1910). 

 HY in Bull. Soc. Bot. France. LX, Mem. 26, p. 10 (1913). 



N. Brongniartiaua COSSON & GERM. Fl. Par. p. 682, Atl. t. 40, f.C. 

 (1845) ; Atl. ed. 2, t. 46, f.D (1882). 



N.furculata NORDSTEDT in Bot. Notiser, 1863, p. 35. 



EXSICCATA : Areschoug, 48 (132) ; Billot, 1988 ; Braun Rabenh. & 

 Stiz., 22, 23, 54, 55; Desmazieres, II, 318; Groves, 26; Lloyd, 404; 

 Migula Syd. & Wahlst, 28-31 ; Mougeot & Nestl. 591 ; Nielsen, 5, 6- 

 (fide Wahlst.) ; Nordstedt & Wahlst.,^, 11, 12, 13; Rabenhorst, 139 (?), 

 460; Schultz, IV, 92; Westendorp & Wall., 1096 & (fide Sydow) 

 1338-1339. 



Monoecious. Stem moderately stout : the internodes 



/ 



usually ouce and a half to twice the length of the 







branchlets. Whorls of 6-8 straight or slightly incurved 

 branchlets, the fertile usually similar to the sterile, but 

 sometimes shortened and forming heads. Branchlets 

 once furcate, or sometimes simple with one node; 

 primary rays usually about twice the length of the 



* The plate ascribed to N.flexilis (t. 1899) is not cited, being so inaccurate 

 that it is impossible to identify it with any known species. The antheridia 

 and oogonia are represented as growing side by side, and all the sterile 

 branchlets as consisting of single cells. 



