259 
~ Phormidium Kitz., Phyc. general., p. 190, 1843. 
tenue (Menegh.) Gomont, Monog. des Oscillariées, p. 169, Pl. 4, f. 23-25, 
1893. 
var. chlorina Playf., Biol. Richmond R., p. 134, 1914. 
fragile (Menegh.) Gonxont, 7.¢., p. 168, PI. 4, £. 13-15, 1893. 
autumnale (Ag.) Gomont, Monog. des. Oscillariées, p. 187, PI. 5, 1. 23, 24,. 
1893. 
uncinatum (Ag.) Gomont, ibid., p. 184, PI. 5, f. 21, 22, 1893. 
lucidum (Kiitz.) Gomont, zbid., p. 179, PI. 5, ealtils Whey, Tiss 
var. amoonum (Kiitz.) Playf., Frw. Alg. Lismore, p. 352, Pl. 46, f. 6, - 
1915. 
(Amphithrix amona Kiitz., pro parte, Phyc. gener., p. 220, 1843.) 
(Phorm. ambiguum Gomont, /.c., p. 178, 1893.) 
corium (Ag.) Gomont, ibid., p. 172, PI. 5, f. I, 2, 1893. 
var. acuminatum Playt., l.c., p. 353, Pl. 46, f. 8, 1915. 
var. constrictum Playf., /.c., p. 353, PL. 46, £. 9, 1915. 
Oscillatovia Vauch., Hist. Conf., p. 165, 1803. 
(Oscillaria Bose., 1800; consult Gomont, Journ. Bot. Morot, v, p. 273 
1891.) 
nigro-viridis Thw., in Harv. Phye. Brit., xxxtx, Pl. 251a, 1851. 
forma crassior Playf., Plankt. Sydney Water., p. 533, 1913. 
var, australis Playf., ibid., Pl. 56, f. 17, 18, 1913. 
tenuis Ag., Alg. Dec. ii, p. 25, 1813. 
var. chlorina Playf., Biol. Richmond R., p. 182, Pl. 6, f. 10, 1914. 
splendida var. attenuata W. West, J.R.M. Soc., p. 165, Pl. iv, £. 58, 1894. 
(0. leptotricha Kiitz., in Mobius, Austral. Stissw., p. 449, £. 22.) 
var. limnetica (Lemm.) Playf., /.c., p. 180, Pl. 6, f.4, JoI4. 
(L. limnetica Lemin., Bot. Central bl., Bd. 76, p. 154. 
var. bacilliformis Playf., /.c., p. 131, Pl. 6, f. 5, 1914. 
var. amylacea Playf., l.c., Pl. 6, f. 6, 1914. 
forma clarescens Playf., iid., p. 182, Pl. 6, f. 7, 1914. 
forma, Playf., ibid., p. 132, Pi. 6, f. 8, 1914. 
princeps Vaucher, Hist. des. Conferves, p. 190, T. 15, f. 2, 1808. 
formosa Bory, Dict. class, d@’ hist. nat. xu, p. 471, 1827 
var. australica Playf., Frw. Alg. Lismore, p. 354, Pl. £6, f. 11, 1915. 
Corakiana Playf., 2bid., Pl. 46, f. 12, 13, 1915. 
Spirulina Turpin, Dict. Vhist. nat., 50, p. 309, Pl. Oscill., £3, 1827. 
(Arthrospira Stizenberger Hedwigia, i, p. 32, 1852.) 
Jenneri (Hass.) Kiitz., Tab. phycol., i, p. 26, T. 37, f. 11, 1845. 
(Spirillum Jenneri Hassal, Brit, Frw. Alg., p. 277, Pl. 75, f. 5, 1845.) 
(Arthrospira Jenneri Stizenb., Hedwigia, i, p. 33, 1852.) 
major Kiitz., Phycol. general., p. 188, 1843. _ 
(Sp. oscillarioides Kiitz., Tab. phycol., i, p. 26, T. 37, f. 8, 1845.) 
laxissima G. 8. West, Third Tanganyika Exp., p. 178, Pl. 9, f. 6, 1907. _ 
Corakiana Playf., Biol. Richmond R., p. 135, Pl. 6, f. 17, 1914. 
Family RIVULARIACEA. 
Calothrix Ag., Syst. Alg., 1824. , SES] 
(Mastigonema Schwabe, 1837; Mastigothrix Kiitz., 1843; Schizosiphon 
Kiitz., 1843, in part; Symphyosiphon Kiitz., 1843, in part.) 
confervicola (Roth.) Ag., Syst. Alg., 70, 1824. EN " 
Braunii Bornet et Flah., Revis. des Nostoc., p. 368, 1886. — 
