KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 25. N:0 5. 163 



2. C. tenerrima, Kutz. Tab. Phyc. III, t, 42, f. 1; Phyc. Gerrn. p. 202. 

 Artic. diam. 4 — 5.3 ,«. 

 Northern India. 



Gen. 2. Cladophora, Kutz. Phyc. Germ. p. 207; Phyc. Gener. p. 263. 

 1. C. erispata, Kutz. 1. c. p. 215; Phyc. Gen. p. 264; Tab. Phyc. IV, t. 40, f. 1; Con- 

 ferva erispata, Dillw. Br. Conf. t. 1)3: forma ad Form. II longissima, Kabh. (Clad. 

 longissimai Kutz. I. c.) accedens. 

 Artic. diam. 67 ,«. 



Gen. 3. Rhizoclonium, Kltz. Phyc. Gener. p. 261. 

 1. K. fontsuium, Kutz. Phyc. Germ. p. 206; Sp. Alg. p. 386. 

 Artic. diam. 14 — 16 ,«. 

 Northern India. 



Ord. VI. CILKTOPHOKH.E (IIakv.) Witth. Gotl. Sötv. p. 2:». 



Gen. 1. Stigeoclonium, Kutz. Phyc. Gen. p. 253. 

 1. S. protensum? Kltz. Phyc. Germ. p. 198; Sp. Alg. p. 355; Conferva protensa, Dillw. 

 Br. Conf. t. 67. 

 Doubtful! 



Cohors I. (EDOGONIACE.E (Thuh.) Wittr. Oedog. Suec. 1870. 



Ord. I. (EDOGONIE.E (De Bary) Pringsh. 



Gen. 1. CEdogonium, Link 1820. 



1. (E. crispnm (Hass.) Wittr. Prodr. Monogr. Oedog. p. 10, sec. Nokdst.; Vesiculifera 

 (■rispa, Hass. Br. Fr. Alg. p. 203, t. 52, f. <s! Oedog. nodosum Kltz. Phyc Germ. 

 p. 200; Sp. Alg. p. 365. 



A plant very near this species. 

 Central India. 



2. (E. undulatum (Bhéb.) Al. Br. in De Baky Algengatt. Oed. u. Bolb. p. 94; Wittr. 

 Oedog. Suec. p. 130; Conferva undulata Bréb.; Cymatonema confervaceum, Kutz. 

 Tab. Phyc. III, t. 47, f. 1; sec. Wittr. 1. c; Sp. Alg. p. 375! 



Artic. long. 56—82, lat. 14—16; lat. bas. cell. 31 ,«. T. XXI, f. 20, a basa] 

 cell X 300, alter Wallich Mscr. No. 344; l>. portion of filament, X 500. 

 Bengal; verv common. 



3. (E. sp. 



Forma ad Oe. Londinensi Wittr. Mod. Oedog. p. 39 accedens? T. XX, f. 33, 

 X 300? after Wallich Mscr. No. 334. 



This curious form seeins a little abnormal; Wallichs sketch shows several 

 oogonia, the lower one oval, the 3 central and continuous ones, and the upper one 

 also, globose. The filament and the three lower oogonia are depicted full of dark 

 green chlorophyll; the upper portion of the fourth and the whole of the fifth are 



