TOLYPELLA NIDIFICA. 189 



4. Tolypella nidifica Leonhardi. 



(PLATE XX.) 



Cham caulium articulis inermibus diaplianis superne latioribus LINN. 



Fl. Suec. p. 363 (1745) ; Olandska & Gotlil. Resa, p. 215 (1745). 

 C. glabra LINN. Olandska & Gothl. Resa, Index (1745). 

 C.flexilis LINN. Sp. Plant, p. 1157 (1753), pro parte. 

 Conferva nidifica MULLEK, in Flora Danica, 761 (1778). 

 Chara Stenliammariana WALLMAN in Liljeblad, Svensk. Fl. ed. 3, p. 



686 (1816). 

 C. flexilis var. nidifica HARTMAN Handb. Skand. Fl. p. 378 (1820). 



C. nidifica BRUZELIUS Obs. Char. p. 17 (1824). 

 RUPRECHT Symb. Hist. PI. Ross. p. 76 (1845). 



Nitella nidifica AGARDH Syst. Alg. p. 125 (1824). 



KUTZING Phyc. Germ. p. 255 (1845) ; Sp. Alg. p. 517 (1849) ; Tab. 



Phyc. VII, t. 37, f. 1 (1857). 

 BRAUN Consp. Charac. Europ. p. 3 (1867). 



C. flexilis var. marina WAHLENBERG Flora Suec. II, p. 604 (1826). 

 N. Stenhammariana WALLMAN in Bot. Notiser, 1853, p. 1 ; Forsok syst. 



Charac. p. 43 (1853) ; Transl. p. 37 (1856). 

 N. flexilis NORDSTEDT in Bot. Notiser, 1863, p. 39. 



Tolypella nidifica LEONHARDI in Verb, naturf. ver. Brunn, II, p. 176 in 



note (1864). 



WAHLSTEDT Mon. Sver. & Norg. Charac. p. 21 (1875). 

 BRAUN & NORDSTEDT Fragm. Mon. Charac. p. 93 (1882). 

 SYDOW Europ. Charac. p. 34 (1882). 

 MIGULA Die Characeen, p. 235, f. 65-68 (1890) ; Syn. Charac. Europ. 



p. 60, f. 53-56 (1898). 

 GIESENHAGEN Untersucli. ii. d. Charac. f. 44 (1902). 



EXSICCATA : Areschoug 47, 200; Braun, Rabenh., & Stiz. 32. 61; 

 Fries XV, 100 (fide Migula) ; Migula, Sydow & Wahlst. 79 ; Nielsen 

 11 ; Nordstedt & Wahlstedt 84, 85, 86. 



Monoecious. Stem slender to moderately stout. 

 Sterile whorls of about 6 rather stout simple branchlets. 

 Fertile whorls forming rather large dense heads. 

 ^Branchlets once or rarely twice forked, the basal cell 

 short, with usually 2-3 short incurved 3-4-celled 

 lateral rays and a much longer 3 5 -celled terminal 

 ray ; cells of rays rounded at their extremities ; ultimate 

 cell often short and when elongated sometimes much 

 narrower than the cell below. Oogonia clustered at 

 the node and base of the branchlets, nearly globose, 

 c. 500-575/1 long, 450-500 /x, broad; spiral-cells show- 

 ing about 10 convolutions, usually swelling at the 



