Nostoc sp. A
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publication ID |
https://doi.org/ 10.11646/phytotaxa.359.1.1 |
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persistent identifier |
https://treatment.plazi.org/id/6B6487B2-183E-2622-EB9A-5550D51BAFAA |
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treatment provided by |
Felipe |
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scientific name |
Nostoc sp. A |
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Nostoc sp. A Fig. 53 A–E.
Colonies gelatinous, irregularly spherical, 2–5 mm in diameter, firm, blue-green to olive-green in colour, filaments loosely entangled. Trichomes flexuous, ± indistinct sheaths, constricted at the cross walls. Vegetative cells cylindrical, 3–5 × longer than wide, 12.5–19.0 μm long × 3.5–5.0 μm wide. Heterocytes elongated spherical to cylindrical, 9.5– 13.0 μm long × 5.2–6.5 μm wide. Akinetes ellipsoidal, single or in series, 6.5–12.8 μm long × 4.5–6.0 μm wide, with smooth colourless cell wall.
Specimens examined:—Emu Ck at Grieves Rd.
Observations:—Compare with N. willei Gardner , and N. alatosporum Sant’Anna et al.; both have distinctively elongated, cylindrical vegetative cells. Benthic, attached to sandy sediments, and growing amongst other algae.
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