TOLTPELLA INTRICATA. 131 



C. polysperma BRAUN in Ann. Sc. Nat. ser. 2, I, p. 352 (1834) ; in Flora, 



XYIII, i, p. 56 (1835). 



GANTERER Osterr. Char. p. 12, t. 1, f. 3 (1847). 

 BABINGTON in Ann. and Mag. Nat. Hist. ser. 2, Y, p. 88 (1850). 



N. polysperma KUTZING Phyc. Gen. p. 318 (1843) ; Phyc. Germ. p. 255 



(1845). 

 WALLMAN Forsok syst, Charac. p. 41 (1853) ; Transl. p. 34 (1856), 



N. nidifica var. polysperma RABENHORST Dentsch. Krypt. Fl. II, p. 196 

 (1847). 



N.fasciculata BRAUN in N. Denks. Schweiz. Ges. Naturw. X, p. 11 



(1849). 

 KUTZING Sp. Alg. p. 517 (1849) ; Tab. Phyc. VII, t. 36 (1857). 



Tolypella intricate* LEONHARDI in Lotos, XIII, p. 57 (1863) ; in Verh. 



Naturf. ver. Hriinn, II, p. 175 (1864). 

 WAHLSTEDT Sver. & Norg. Charac. p. 22 (1875). 

 BRAUN in Cohn, Krypt. Fl. Schles. I, p. 400 (1876). 

 GROVES in Journ. Bot, XVIII, p. 163, t, 209, f. 13 (1880). 

 BRAUN & NORDSTEDT Fragin. Mon. Charac. p. 99 (1882). 

 SYDOW Em-op. Charac. p. 38 (1882). 

 MIGULA Die Characeen, p. 214, f . 61-63 (1890) ; Syn. Charac. Europ. 



p. 56, f. 49-51 (1898). 



HOLTZ Charac. in Krypt. Mark-Brandenb. IV. i, p. 80 & fig. (1903). 

 HY in Bull. Soc. bot. France, LX, Mem. 26, p. 21 (1913). 



EXSICCATA : Areschoug 248, 249 ; Billot 1393 ; Brann, Rabenh. & 

 Stiz. 18, 33, 108 ; Desmazieres II, 325 ; Fries XVI, "98 "; Groves 22, 52; 

 Migula, Syd. & Wahlst. 7, 35, 77, 78; Nielsen 14 (fide Wahlst.) ; Nord- 

 stedt & Wahlstedt 46-48. 



Monoecious. Stem moderately stout, often much 

 branched. IVlwrls of two kinds ; the sterile and lower 

 fertile ones distant, large and lax, with usually 6 long 

 primary branchlets, the sterile usually once, the fertile 

 once or twice, divided with a variable, often consider- 

 able, number of shorter, more slender, usually simple, 

 accessory branchlets ; the upper fertile whorls forming- 

 very large, rather dense heads, with shorter, usually 

 twice-divided, branchlets. Branchlets producing at the 

 first node 3-4 lateral, widely divergent simple rays, 

 and one central ray, which is either considerably longer 

 and simple, or is again divided ; at the second node 

 when present usually 3-4 lateral rays, and a central 

 elongated ray. Ultimate rays 5-G-, rarely 7-. celled, the 

 cells successively diminishing in length and thickness, 

 so that the ray tapers to the apex ; ultimate cell bluntly 

 conical. Oogonia stalked or sessile, produced 2-4 

 together at each node, and frequently also at the base 



