Chlorococcales (Chlorophyceae) of Eastern and North ... - Algae

Park, Assam (S-56); 1160, 1162; 28th March 2007;
Golaghat, Assam (S-58); 1187, 1188; 30 th March 2007;
Guwahati, Assam (S-63).
Family: Botryocccaceae Wille 1909
Sub family Botrycoccoidae
Genus: Botrycoccus Kützing 1849
[Synonym: Botryodictyon Lemmermann 1903,
Botrysphaera Chodat 1922]
13. Botrycoccus braunii Kützing 1849 (Pl. 1, Fig. 16 & 17)
[Synonym: Botrycoccus giganteus Reinsch 1877]
Komárek and Fott 1983, p. 379, fig. 113.4, Prescott,
1961, p. 232, pl. 52, fig. 1 and 2, Philipose 1967, p. 195, fig.
108, a and b.
Coenobia in irregular shape, often united in compound
net like aggregates by long delicate mucilaginous
projections from the colonial envelope; cells ovoid or
ellipsoid and arranged radially at the periphery of the
coenobia, cells 2-6 µm broad, 4-13 µm long; simple
coenobia up to 100 µm in diameter.
Free floating in river; Voucher number; date and site:
1179; 29 th March 2007; Jorhat, Assam (S-62); 1187, 1188;
30 th March 2007; Guwahati, Assam (S-63).
Family: Radiococcaceae Fott and Komárek 1979.
(Synonym: Palmellaceae Lemmermann 1915,
Loeocystidaceae Fott 1971, Palmogloecaceae Fott 1974).
Genus: Coenochloris Korsˇikov 1953
14. Coenochloris forttii (Hindák) Tsarenko 1990 (Pl. 1,
Figs. 18)
[Basionym: Coenococcus fottii Hindák 1977]
[Synonym: Eutetramorus fottii (Hindák) Komárek,
Sphaerocystis schroeteri Chodat]
Coenobia spherical to irregularly spherical, 8 or 16
celled, embedded in a mucilaginous slime layer; 18-30
µm in diameter; each cell 7-9 µm in diameter; chloroplast
one, parietal, with one pyrenoid.
Planktic in pond and in river; Voucher number, date
and site: B107; 25 th April 2004; Bhubaneswar, Orissa (S-2;
Temp. 30°C; pH 7.7; Cond. 500); 763; 25 th Jan. 2005;
Similipal Biosphere Reserve, Orissa (S-19; Temp. 26°C;
pH 6.8; Cond. 140 µs); 768 & 769; 26 th Jan. 2005; Similipal
Biosphere Reserve, Orissa (S-23; Temp. 28°C; pH 7.0;
Cond. 390 µs).
Genus: Radiococcus Schmidle 1902
15. Radiococcus nimbatus (De Wildeman) Schmidle 1902
(Pl. 2, Fig. 1)
[Basionym: Pleurococcus nimbatus De-Wildeman 1893]
Thompson 1959, p. 137, fig. 6.155; Komárek and Fott
Jena & Adhikary: Chlorococcales from India 173
1983, p. 399, fig.120.3.
Coenobia 4 celled 14-20 µm in diameter; cells more or
less pyramidal and angular remaining in a group;
chloroplast single, parietal without pyrenoid; cells 5-12
µm in diameter.
Epilithic in drain; Voucher number, date and site:
B110; 25 th April 2004; Bhubaneswar, Orissa (S-3; Temp.
27°C; pH 7.7; Cond. 349).
Genus: Coenocystis Korsˇikov 1953
16. Coenocystis reniformis Korsˇikov 1953 (Pl. 2, Fig. 2)
Komárek and Fott 1983, p. 412, fig. 124.3.
Cells asymmetric; ellipsoidal, cell wall smooth, cells 3-
6 µm in diameter; chloroplast one with a small pyrenoid.
Planktic in pond and river; Voucher number, date and
site: 764; 25 th Jan. 2005; Similipal Biosphere Reserve,
Orissa (S-20; Temp. 29°C; pH 7.1; Cond. 200 µs); 766; 25th Jan. 2005; Similipal Biosphere Reserve, Orissa (S-21;
Temp. 28°C; pH 7.1; Cond. 300 µs); 769; 26 th Jan. 2005;
Similipal Biosphere Reserve, Orissa (S-23; Temp. 28°C;
pH 7.0; Cond. 390 µs).
Family: Oocystaceae Bohlin 1901
Sub-family: Oocystoideae
Genus: Oocystis A. Braun 1855
17. Oocystis rhomboidea Fott 1933 (Pl. 2, Fig. 3)
[Synonym: Didymogenes dubia Fott 1923, Oocystis submarina
Lagerheim var. variabilis Skuja 1956]
Hindák 1977, p. 67, pl. 26; Komárek and Fott 1983, p.
510, fig. 149.4.
Coenobia 4-celled; cells elongated-oval with rounded
ends 2-3 times as long as broad, 9-15.6 µm broad and 15-
25 µm long; 4-celled embedded in a single sheath; coenobia
25-35 µm broad and 30-50 µm long.
Planktic in pond; Voucher number; date and site: 541;
27 th Sept. 2005; Utkal University, Bhubaneswar, Orissa
(S-64).
Sub family: Glaucocystidoideae
Genus: Glaucocystis Itzigsohn in Rabenhorst 1868
18. Glaucocystis simplex Tarnogradskij 1959 (Pl. 1, Figs
4, 5 & 6)
Komárek and Fott 1983, p. 553, fig. 160.4.
Coenobia 2-4 celled, enclosed within a mother cell
wall; cells oblong-ellipsoid and with a number of radiating
chromatophore like bodies inside, cells 10-16 µm
broad and 20-30 µm long, coenobium 25-50 µm broad
and 40-65 µm long.
Epiphytic in pond and polluted drain; Voucher number,
date and site: 946, 948; 3 rd Dec. 2006; Silkuri, Assam
(S-30; Temp. 23°C; pH 7.6; Cond. 290 µs); 1018; 4 th March