FIGURES 9–14 in Two new species of the genus Gomphonema (Bacillariophyceae) from Guayabo Waterfall, Cuba

FIGURES 9–14. Gomphonema guayabense sp. nov. SEM images from the type population. 9. External view of the central part of a valve with the central raphe endings. 10. External view showing foramina on valve mantle, small granula on the interstriae at the junction of valve mantle/face and the otherwise unornamented mantle. 11. Internal view of an entire valve with pseudosepta at both poles. 12. External view of foramina on valve face and granula at the junction of valve face/mantle. 13. External view of footpole with pore field, tilted 40°. 14. Internal view of valve centre showing alveoli, central nodule and proximal raphe fissures. Scale bar = 2 μm, except Figs. 9 & 11, scale bar = 10 μm.