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Distribution: Andra Pradesh (Suseela and Goyal, 1995 a), Rajasthan (Tiwari et al., 1999).

Anabaena Bory
Desikachary, 1959: 391.

Trichomes mostly uniformly broad, sheath absent or several trichomes in a broad
sheath; thallus mucilaginous, heterocyst intercalary or terminal; spores single or in long

chains, formed near the heterocysts or in between the heterocysts, akinetes cylindrical and
barrel-shaped.

The genus is represented by 05 species.

14. Anabaena spiroides Klebahn. (Pl.- III, Fig. 17).
Desikachary, 1959: 395.

Trichome single spirally coiled with distinct sheath; cells spherical, 6.8 µm broad;

spores spherical, away from heterocyst, 11 μm broad.
Distribution: Delhi (Fritsch, 1949), Uttar Pradesh (Prasad and Mehrotra, 1978), Maharashtra

(Pingle, 1988; Bodas, 1991; Zaware and Pingle, 2003; Auti and Pingle, 2006; Auti, 2007),
Manipur (Devi et al., 1999), Assam (Ahmed et al., 1999; Ahmed, 2001; Ahmed and Kalita,

2002), Tamilnadu (Kavitha et al., 2004), Orissa (Das and Dash, 2005).
15. Anabaena oryzae Fritsch (Pl.- III, Fig. 18).

Desikachary, 1959: 396.

Thallus soft, green, membranous, gelatinous; trichomes short, straight, aggregated;
2.5- 4.0 µm broad and 5.3- 6.5 µm long, heterocyst intercalary and terminal, 5- 5.4 µm broad,

spores sub-spherical 4.1- 5.5 µm broad, 5.2- 6.5 µm long.
Distribution: Delhi (Verma et al., 1990, Fritsch, 1949), Uttar Pradesh (Pal, 1975; Singh,

2001), Orissa (Padhy et al., 1992; Sahu, 2000; Das, 2002, 2005; Biswal and Das, 2004; Das
and Dash, 2005), Kerala (Shaji and Panikkar, 1994; Anand and Hopper, 1995;

Madhusoodanan and Dominic, 1995), Assam (Saikia and Bordoloi, 1994; Ahmed et al.,

1999; Ahmed, 2001; Hazarika et al., 2001; Ahmed and Kalita, 2002), Maharashtra (Shinde,
1995; Patil, 2000; Auti and Pingle, 2006; Auti, 2007), Manipur (Devi et al., 1999),

Tamilnadu (Anand and Subramanian, 1994), West Bengal (Singh et al., 2001), Kashmir (Ara

et al., 2002), Andhra Pradesh (Rao et al., 2008).

16. Anabaena fertilissima Rao, C. B. (Plate- IV, Fig. 19)
Desikachary, 1959: 398.

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