98 



MEMOIRS OF THE XEW YOKK BOTANICAL GARDEN 



PLATE 2 



Figure 13. Chroococcus suhspliaericus 



A few typical cells and colonies x 1,200 



" 14. Chroococcus mediocris 



Single cells and typical colonies x 1,000 



" 15. Chroococcus muralis 



A small group of single cells and colonies x 1,000 



" 16. Chroococcus aeruginosus 



A .small group of single cells and colonies x 1,000 



" 17. Chroococcus giganteus occidentalis 



A single colony of four cells, typical x 500 



" 18. Chroococcus minufissimus 



A small group of typical cells and colonies x 1,000 



" 19. Chroococcus const rid us 



A small group of cells, showing stages in division 



and colony formation x 1,000 



" 20. Chroococcus heanogloios 



A small group of typical cells and colonies at- 

 tached to a host plant x 500 



" 21. Gloeocapsa cartilaginea 



A small colony x 1,000 



" 22. Gloeocapsa accrvata 



A small colony with young internal colony for- 

 mation - X 1,000 



" 23. Gloeocapsa liviela minor 



Typical single cells and colonies x 1,000 



" 24. Gloeocapsa calcicola 



Typical single cells and colonies x 1,000 



" 25. Gloeocapsa ovedis 



Typical single cells and colonics x 1,000 



