244 Karz E. Hırn. 
132. Qe. acrosporum Dr Bary char. emend. 
1854 De Bary (1) p. 47, 60—64, 94, t. 3, f. 1—12; 1868 Rabenhorst p. 351; 
1870 Wittrock (I) p. 126; 1874 Wittrock (IV) p. 26; 1877 Nordstedt (I) p. 28; 
1878 Kirchner (I) p. 55; 1884 Wille (II) p. 25, t. 1, f. 45; (1884 Cooke p. 163, 
t. 61, f. 2); 1889 De Toni (I) p. 58; 1895 Lemmermann (II) p. 27; 1895 Hirn 
(p.17 1896 Hirn (ED) p. 2 
Exs. 1893 in Wittr. et Nordst. Alg. exs. Fasc. 24, N:o 1101 sub nom. Oe. 
acrosporum De Bar, f. eonnectens Wittr. (immixt.); 1898 in Phycoth. Bor.-Amer. 
Fasc. IX, N:o 409 sub nom. Oe. acrosporum De Bar. f. connectens Wittr.; Roume- 
guère, Alg. exs. N:o 246 sub nom. Oe. Vaucherii A. Br. 8 pulchellum (immixt.). 
Oe. dioicum, nannandrium, gynandrosporum vel (sec. DE Barry 1. c. p. 63) 
idioandrosporum; oogonio solitario, terminali, ellipsoideo, in suprema parte cir- 
cumscisso, operculo apicali, minimo, mox deciduo (? vel evanescenti); membrana 
oogonii (jam ante fœcundationem) in latere interiore costis longitudinalibus, 
interdum anastomosantibus instructo; oospora oogonium plane complenti, mem- 
brana ejus cum membrana oogonii coalita, duplici: episporio longitudinaliter co- 
stato (in sectione optica transversali undulato), inter costas subtiliter transverse 
striato, costis (in medio oosporæ 23—30) subtilissime crenulatis, endosporio 
levi; cellulis suffultoriis tumidis vel subtumidis; cellula fili basali forma, ut 
vulgo, elongata, cellula terminali obtusa; androsporangiis 1——2-cellularibus, 
hypogynis vel (sec. De Barry) in plantis propriis, androsporangiiferis sedentibus ; 
nannandribus curvatis, in cellulis suffultoriis sedentibus, stipite interdum bi- 
vel tricellulari, cellulis stipitis superioribus longissimis, antheridio exteriore, 
1—2-cellulari ; 
crassit. cell. veget. (10—) 13—21 u, altit. 3—6 (—8)-plo major; 
5 , suffult. 17—25 » » 1%—3- e fc 
5 oogon. 38—48(—50) ,, „ 950—963 iis 
5 cell. androsp. 16—21 32:315 1012-15 es 
^ , infer.stip. nannandr. 9—12 »» » 90—38(—40),; 
> » , super. > 3 6—8 »; » 55—1l E 
, > antherid. 6—8 Me. Ec S b) 
Tab. XLI, Fig. 254. 
Hab. in 
America austr.: ad Caldas civit. Minas Geraés Brasilie (sec. Wille). America 
bor.: Middlesex Fells in civit. Massachusetts. Asia: Mandschuria (Herb. Borge. 
T. XXVII. 
