FIGURE 2 in Nephrococcus serbicus, a new coccoid cyanobacterial species from Božana Cave, Serbia

FIGURE 2. Nephrococcus colonies from natural material: a = 2-celled stadium with yellow-brown cells and cell envelopes; b = oval, yellow-brown cells aggregated in the centre of the colony; c = yellowish, irregularly rounded cells nearly arranged in the form of a wreath; d = olive-green to yellowish, irregularly rounded cells nearly arranged in the form of a wreath; e = blue-green kidney-shaped cells arranged in a wreath formation; f = blue-green kidney-shaped cells arranged in a wreath formation, with wreaths placed opposite one another; g, h = probably resting cells. Scale bar: 10 μm.