Tolypothrix lanata Wartmann ex Bornet & Flahault (1886: 120)

Mcgregor, Glenn B., 2018, Freshwater Cyanobacteria of North-Eastern Australia: 3. Nostocales, Phytotaxa 359 (1), pp. 448-450 : 448-450

Tolypothrix lanata Wartmann ex Bornet & Flahault (1886: 120) Fig. 91 A–E.

Colonies tufted, olive-green to blue-green in colour; thallus composed of interwoven, erect filaments of penicillate falsely branched trichomes; sheath uncoloured, thin and closely adpressed to the trichomes, (9–) 12–15 μm broad; trichomes heteropolar, cylindrical, apical cells domed, often protruding just beyond the sheath. Vegetative cells isodiametric to slightly shorter than broad, blue- or olive-green in colour, sometimes with granular contents, (L/D 0.5–1.2), 8.5–12 (–15) μm broad. Heterocytes at junctions or more rarely intercalary, in groups of two, three or four, 8–22 μm long × 11–16 μm broad. Hormogonia produced from terminal regions of trichomes.

Specimens observed:—Reedy Ck at Mount Byron Rd, Sandy Ck at Wivenhoe-Somerset Rd, Sheepstation Ck at Crossing no. 2, Wivenhoe Dam at Cormorant Bay, Walsh R. at Wrotham.

Other records:— Northern Territory: Playfair (1917, 1918).

Observations:—Forms macroscopic, tufted colonies, which are attached to woody debris and submerged aquatic vegetation in the littoral zone of streams and lakes in SE Queensland.

Other species known from Australia: T. campylonemoides S.L.Ghose (1924: 344) , Northern Territory, Moewius (1953); T. distorta Kützing ex Bornet & Flahault (1886: 119) , Watts (1865), Tasmania, New South Wales, Australian Capital Territory, Skinner & Entwisle (2001), Victoria, Ling & Tyler (2000); T. flaccida Kützing (1843: 228) , Northern Territory, Sonder (1880); T. tenuis Kützing ex Bornet & Flahault (1886: 122) , Queensland, New South Wales, Bailey (1895, 1913), McLeod (1975), Möbius (1895), Skinner & Entwisle (2001).

ACKNOWLEDGEMENTS

The author is grateful for financial support provided by the Australian Biological Resource Study, a division of the Australian Government’s Department of Enviroment and Energy. I’m also grateful for the support and encouragement of the staff of the Water Planning Ecology group, Queensland Department of Environment and Science, and SunWater. Many of you have accompanied me in the field and provided me with specimens, and distributional information from across the vastness of north-eastern Australia. A special mention to Natasha Chan and Priya Muhid for their valuable assistance in the laboratory and Myriam Raymond for assistance in preparing figures. The following people have provided me with interesting specimens, advice, and inspiration along the way: Jiri Komárek, Hedy Kling, Gertrude Cronberg, Maree Smith, Karen Reardon, Peter Baker, Barbara Sendall, Lindsay Hunt, Dean Newman, Wendy Williams, Jon Holliday.

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