Page 46 - Walks In The Black Range, Vol. 4
P. 46

    10. Small pools along the stream edge were full of cyanobacterium. Cyanobacterium produce much of the oxygen which is in the atmosphere. Reproduction is by fragmentation. Strands break apart, each segment can create a new colony. (Photo below)
11. In this same area, Veronica anagallis-aquatica, Water Speedwell (photo top right) and Watercress, Nasturtium officinale (photo above), were found growing in close proximity - as they often are.

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