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(Ahmed et al., 1999, Ahmed, 2001; Ahmed and Kalita, 2002), Orissa (Sahu, 2000; Das, 2002,

2005), Uttar Pradesh (Mishra et al., 2001 a, b; Misra and Srivastava, 2005), West Bengal
(Singh et al., 2001, Tirkey and Adhikary, 2005), Rajasthan (Pandey, 2002), Jammu and

Kashmir (Ara et al., 2002).
3. Nostoc entophytum Born et Flah. (Pl.- I, Fig. 4).

Desikachary, 1959: 375.
Thallus small, macroscopic, yellowish; filaments densely entangled, sheath disket;

trichomes 2.6 µm broad; cells barrel-shaped, heterocysts broader 5.5 µm broad.

Distribution: Uttar Pradesh (Bendre and Kumar, 1975), Tamilnadu (Anand and
Subramanian, 1994), Andhra Pradesh (Suseela and Goyal, 1995 a, b), Kerala (Anand and

Hopper, 1995), Maharashtra (Auti and Pingle, 2006; Auti, 2007; Mohite, 2007).

4. Nostoc paludosum Kuetz. ex Born. et Flah. (Pl.- I, Fig. 5 and 6).
Desikachary, 1959: 375.

Thallus microscopic punctiform, gelatinous; sheath broad, hyaline; trichomes 3- 3.5
µm broad, cells barrel-shaped, pale blue-green, heterocyst 5.5 µm broad.

Distribution: Madhya Pradesh (Tiwari, 1972), Assam (Ahmed et al., 1999; Ahmed, 2001;
Ahmed and Kalita, 2002), Tamilnadu (Anand and Subramanian, 1994), Andhra Pradesh

(Suseela and Goyal, 1995 b), Kerala (Anand and Hopper, 1995; Madhusoodanan and

Dominic, 1995), Manipur (Devi et al., 1999), Maharashtra (Patil, 2000; Zaware and Pingle,
2003; Auti and Pingle, 2006; Auti, 2007), Uttar Pradesh (Mishra et al., 2001 a, b), West

Bengal (Singh et al., 2001), Goa (Shetiya and Kerkar, 2004).
5. Nostoc linckia (Roth) Bornet ex Born. et Flah. (Pl.- II, Fig. 7).

Desikachary, 1959: 377.
Thallus blue-green to blackish green, variable is size, gelatinous; filaments entangled,

flexuous; trichomes 3.5- 4.0 µm broad, pale blue-green; cells short, barrel-shaped, 4.3 µm

broad; heterocyst sub-spherical, 4- 6.5 µm broad, 4.5- 5.6 µm long; spores 6.5- 7.5 µm broad,
6.7- 8.0 µm long in chains.

Distribution: Madhya Pradesh (Bendre and Agarker, 1965), Tamilnadu (Tiwari, 1972), Uttar

Pradesh (Pal, 1975; Bendre and Kumar, 1975; Chaturvedi and Habib, 1995; Mishra et al.,
2001 a, b; Singh, 2001), Bihar (Verma et al., 1990), Orissa (Padhy et al., 1992; Sahu, 2000;

Das, 2002, 2005; Biswal and Das, 2004; Das and Dash, 2005), Andhra Pradesh (Suseela and
Goyal, 1995 b, Rao et al., 2008), Kerala (Anand and Hopper, 1995; Madhusoodanan and

Dominic, 1995; Sankaran, 2001), Maharashtra (Shinde, 1995; Patil, 2000; Deshmukh and
Pingle, 2006; Auti and Pingle, 2006; Auti, 2007), Assam (Talukdar and Sarma, 1998; Ahmed

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